hydraulic coupling constant filling of the six applications

Constant filling fluid coupling widely used for everything you need to solve difficult start , overload protection, cushion the impact and torsional strength and coordination of multi- machine driven and flexible brake balance work machine.1 , constant filling fluid coupling can be used in lifting transport machinery : such as scraper , belt , gantry crane, a variety of hoists, chain conveyors and other power transmission ;2 , constant filling fluid coupling can be used in mining machinery , such as : If the crusher, ball mill, bucket wheel excavators, etc. ;3 ,Hydraulic hose fittings fluid coupling can be used in metallurgical machinery such as: extrusion machine, straightening machine , cold call , fans , etc. ;4 , constant filling fluid coupling can be used inconstruction machinery such as: tower cranes, stone cutting machine, brick , et5 , constant filling fluid coupling can be used in chemical machinery such as: mixers, centrifuges, drying machine, mixing machine, etc. ;6 , constant filling fluid coupling can be applied to other machinery such as: textile machinery, plastic machinery, paper machinery.

Use of hydraulic coupling

Fluid couplings are widely used in mining, petroleum, chemical, metallurgy, light industry , cement , leather , construction, building materials, ceramics , telecommunications, transportation, electricity, food, textile , foundry , entertainment industry and other sectors . Hydraulic ferrules Our different devices for different industries with a special product design structure, better services for users.
Fluid couplings have been successfully resolved such as belt conveyors, oil field pumping units , foundry sand mixer, power plant air preheating, roll crusher cement plants , steel mills and phosphorus removal systems, power transmission system, oil rigs and other equipment a common application of fluid coupling fault -prone , effectively reducing the number of equipment maintenance and longer product life.

variable speed hydraulic coupling compared to other coupling device

 variable speed hydraulic coupling compared to other coupling device characteristics1 . Variable speed hydraulic coupling constant speed of prime mover in the case of continuous stepless speed driven machinery , when combined with centrifugal fans, pumps match , its speed range is 1 to 1/ 4, when the piston mechanical match , its speed range of 1 to 1/ 3 ;2 . Variable speed fluid coupling allows the motor no-load start , do not choose too much power headroom prime mover such as a motor ability , Hydraulic adapters Hydraulic adapters can reduce the network load fluctuations ;3 . Variable speed hydraulic coupling with overload protection performance ;4 . Vibration isolation , shock mitigation ;5 . Variable speed hydraulic coupling between transmission parts no direct mechanical contact , long life ;6 . Variable speed hydraulic coupling at rated load with higher transmission efficiency ;7 . Speed ​​fluid couplings with hydraulic control unit and two axle speed , easy to realize remote automatic operation ; governor hydraulic coupling with a reasonable structure , advanced performance , high reliability , to meet the metallurgy, building materials , power generation and other industries long-term continuous operation conditions require .

coupling of two types of

Hydraulic coupling fluid as the working medium is a non-rigid couplings , also known as hydraulic couplings. Hydraulic coupling two main types . Today, I will introduce two types of fluid coupling .Hydraulic pipe fittings Hydraulic pipe fittings Depending on the application , fluid coupling constant filling into variable speed hydraulic coupling and hydraulic coupler . Constant filling fluid coupling which is mainly used for motor reducer boot protection and operation of the impact protection , location, compensation and energy buffer ; variable speed fluid coupling is mainly used to adjust the input and output speed ratio , other functions and fluid coupling constant filling essentially the same .

fluid coupling constant filling of the seven functions

One , with power-saving features .Second, with overload protection .
Third, under certain conditions, with braking function .Four , with a flexible drive automatically adapt to the feature.Five , with a slow shock and torsional vibration isolation function .Six ,  Hydraulic hose fittings with a light load of the motor starter functions , and the ability to take advantage of the maximum torque of the motor starting load function ( to improve the motor starting performance ) .
Seven , coordinating multi-machine drive, uniformly distributed load function .

What are the advantages hydraulic coupling

By liquid fluid coupling with the pump wheel, turbine blades interaction of the change in angular momentum transfer torque .Its output torque equal to the input torque minus the friction torque, so that its output torque is less than the input torque constant . Fluid coupling between the input shaft and the output shaft by liquid contact , working member does not exist between the rigid connection.Hydraulic pipe fittings  eliminates shock and vibration ; output speed lower than the input speed , two -axis speed difference with the increase of the load ; overload performance and good starting performance , the load is too large and can still be stopped when the input shaft rotation , does not cause damage to the power machine ; when the load decreases, the output shaft speed increases until close to the input shaft speed, the transmission torque to zero.

Use hydraulic coupling temperature controller should note the following

Use hydraulic coupling temperature controller should note the following
1 . The need for the police, several alarms , alarm mode is selectable to meet the requirements ;2 hydraulic coupling Hydraulic tube fittings controller Dimensions ( panel size, length ) ;3 hydraulic coupling temperature controller main output ( under control device may be, it is uncertain if the manipulator may be based on system accuracy requirements ; 4 . Input sensor indexing number ( based on supporting the sensor may be ) , display accuracy , display resolution

.PPR tube has a unique advantage

PPR pipe : water pipe as a new item. Both can be used as a cold water pipe , hot water pipes can also be used , due to its non-toxic, light, pressure , corrosion resistance, is becoming a marketing Hydraulic pipe fittings , PPR pipe not only for cold water pipes, also applies to hot water pipes, and even pure drinking water pipes. PPR pipe interface with hot-melt technology, tube are completely fused together , so once the device to suppress the test is passed, there will not be the same as the aluminum pipe leaking a long time aging phenomenon, and not scaling PPR pipe , PPR pipe known as never fouling, never rust, never leakage, green senior water supply information .

PPR pipe , brass and stainless steel types

PPR pipe , brass and stainless steel types . Heavy, house decoration water now mainly divided into: aluminum pipe, galvanized pipe , UPVC pipe . Aluminum tube: plastic composite pipe is a pipe market, the more popular the market today compared with HSBC and famous Kinderdijk, due to its light weight, durable and convenient construction , which can be more suitable for bending to use in the home improvement . Its main drawback is Hydraulic hose fittings shot water pipes , due to thermal expansion and contraction will cause a temporary dislocation wall resulting in leakage. Galvanized pipe : Most of the old house are used galvanized pipe , and now gas, heating with the kind of iron pipe is galvanized pipe, galvanized pipe as the water pipes , the use of a few years, a lot of rust occurrence tube , outflow yellow water not only pollute the ware, and mixed with non-smooth inner wall of the breeding of bacteria, corrosion caused by high levels of heavy metals in water , serious harm to human health. UPVC pipe : in fact, a plastic tube , usually with adhesive bonding interface , UPVC pipe antifreeze and heat capacity are not good, it is difficult to use for hot water pipes, due to its strength not apply to pipes Order pressure requirements, so the cold water pipe is rarely used. In most cases , PVC pipe for wire and pipes and sewage pipes.

flared fittings Applicable medium

flared fittings Applicable medium: oil, water, gas and other non-corrosive or corrosive medium pipe fittings, steel pipe specifications with more flexible, and pipeline welding , with a solid connection , Hydraulic ferrules good sealing performance characteristics, thus in the refining , chemical, light industry, textile , defense, metallurgy , aviation , shipbuilding and other systems are widely used ; also applies to a variety of mechanical engineering , machine tools and other hydraulic transmission pipeline

Card sets of pipe joints

Hydraulic system pipes and pipe fittings ferrule connections are also different, screwed into the end of the pipe connecting thread is used . Taper thread by virtue of their vertebral tighten and use substances such as PTFE sealing operation , mainly used in low-pressure Hydraulic adapters  systems. Fine thread sealing effect is very good, is often used in high-pressure systems, but it requires the use of combination washer or O-ring to seal against the end of the work , sometimes used copper washers , it is more suitable for use in connecting wall relatively thick pipe , its components are joint body to take over and nuts. When in use, the connector body embedding target , with the use of the previously mentioned washers to seal the joint between the body and take over the rubber seal , sometimes using spherical sealing manner.
    Since the card sets of pipe joints belong to the detachable connecting elements , it is sufficient for normal connections are secure , sealing strong , reasonable size , pressure loss, process performance requirements , etc. , but also must meet the disassembly facilitation requirements. Therefore, do not watch a small a small card sets of pipe joints , because it exists only in order to prop up the entire hydraulic system exists.

Card sets of pipe joints

Is the connection between the pipe and the pipe tool, can be removable components and piping between the connection point. In the tubular member acts as an indispensable role, which Hydraulic ferrules Hydraulic ferrules pipes of the two main components .Card sets of pipe joints have a variety of species , commonly used type tube fittings can generally be divided into hard card sets of pipe joints and soft ferrule tube fitting two kinds . If we follow Card sets of pipe fittings and pipe connections to points, hard card sets of pipe joints have flared , ferrule and welded three kinds , soft card sets of pipe joints are mainly withhold gum card sets fittings

The card sets of pipe joints

Is a new pipeline connecting elements , suitable for oil, gas and general corrosive medium pipeline system , working pressure 16-40PMa. Sleeve type pipe joint structure is dominated by Hydraulic tube fittings  tapered hole with 24゜joint body with sharp inner edge of the card sets, play the role of compression nut components. Tighten the nut , the ferrule is pushed 24゜tapered bore, and subsequently deformed , so that the blade cut steel ferrule and the formation of annular grooves , which play a role in sealing . Since the card sleeve and flexible, it can be subjected to greater shocks , played the role of locking .

Card sets of pipe joints has the following advantages

Card sets of pipe joints has the following advantages 1 , simple structure, reliable sealing performance , easy to use , sophisticated manufacturing, thin, light and beautiful.2 , do not add washers, Hydraulic ferrules without welding , material saving , repeated assembly and disassembly performance.3, due to tube fittings can not be welded , thus reducing the pipeline impurities on the system performance . Therefore , the card sets of pipe joints is increasingly widely used in the oil , gas, hydraulic and pneumatic equipment for the media pipeline , especially for days with fire hazard , aerial and mounting frequent occasions .

fused connection including fused socket connection and fused saddle connection.

fused connection including fused socket connection and fused saddle connectionHigh cost , fused connection advantage is reliable quality ( reduce the human factor ) and construction of high  Hydraulic hose fittings. Because fused pipe manufacturing techniques are required . Early mainly used in small diameter gas pipeline system . In recent years, as technology advances , fused connection is used widely. Not only applied to piping systems for water supply , drainage piping systems , and began to apply to a larger diameter ( but fused pipe diameter main market is the millimeter range DN20-250 )

Welded pipe joints into the injection

Welded pipe joints into the injection mold and injection molded buried hotline
Welded pipe joints into the injection mold and injection molded buried the hotline fused pipe . There hotline half buried ( wire Banlu ) Full buried ( metal wire is not exposed ) hotline pre -coated polyethylene layer ( metal wire is not exposed ) and other Hydraulic ferrulesHydraulic ferrules designs ( advantages and disadvantages ) are all with hands automatically operation , from a technical course speaking there are two categories: one is to extend the hotline wrapped around a metal mandrel or mold wrapped in prefabricated polyethylene thin sleeve. All or part of the manual operation of manual operation of the different degree of automation . The other is using the first injection and then machined polyethylene pipe routing process route

commonly used fittings can generally be divided into hard two kinds of fittings and hose fittings .

If we adopt the fittings and pipes are connected to points, hard pipe joint has flared , ferrule and welded three kinds of hose fittings are mainly withhold hose fittings .Hydraulic system pipes and fittings connections are also different, screwed into the end of the pipe connecting thread is used . Taper thread by virtue of their vertebral tighten and use substances such as PTFE sealing operation , mainly used in low-pressure hydraulic systems. Fine thread sealing effect is very good, is often used in high-pressure systems, but it requires the use of Hydraulic tube fittings  or O-ring to seal against the end of the work , sometimes used copper washers , it is more suitable for use in connecting wall relatively thick pipe , its components are joint body to take over and nuts. When in use, the connector body embedding target , with the use of the previously mentioned washers to seal the joint between the body and take over the rubber seal , sometimes using spherical sealing manner. Hydraulic system pipes and fittings Hydraulic adaptersHydraulic adapters , screwed into the end of the pipe connecting thread used . Taper thread by virtue of their vertebral tighten and use substances such as PTFE sealing operation , central air conditioning is mainly used in low-pressure hydraulic systems. Fine thread sealing effect is very good, is often used in high-pressure systems, but it requires the use of combination washer or O-ring to seal against the end of the work , sometimes used copper washers , due fittings are removable type connection element . More suitable for the connection of the pipe wall is thick , consisting mainly of local joint body to take over and nuts. When used, the connector body embedding target , with the use of the previously mentioned washers to seal the joint between the body and take over the rubber seal , sometimes using spherical sealing manner.Meet the normal connections are secure , sealing strong , reasonable size , pressure loss, process performance requirements , etc. , but also will need to meet the requirements of convenient disassembly . Therefore, do not watch a small a small pipe joints, because it exists only talent support from the presence of the entire hydraulic system .

Metal hose connector ferrule structur

Metal hose connector ferrule structure and characteristics DKJ card sets metal hose connector , can non-threaded steel pipe and hose connections , save the threading process , you can simply screw into Metal joints made ​​of zinc alloy die-casting , zinc plated , brushed , or chrome ; compact structure , high strength. Steel and metal hose connection , Hydraulic pipe fittings Hydraulic pipe fittings reliable, attractive appearance ;
 This metal connector for the card sets, metal hose is used to connect to non- threaded pipe above ; adaptation metal hose : JS type , JSH type , JSB type , JSHG type ; adapter tube : thin steel wire tube , black, galvanized iron pipes ( water , gas pipes ) ;Use metal connector DKJ card sets , please note the connection pipe hose specifications, dimensions .

card sets Note the use of hose fittings

Sleeve type hose connector has a simple structure , easy to use and do not have the advantages of welding . But in the high-pressure Hydraulic pipe fittings, if the improper operation will often cause leakage , affecting its widely used. After years of practice I summed up some experience , and achieved good results. Card sets of pipe joints mainly by a 24 degree taper hole connector body 1, with a sharp inner edge of the card sets 2 and play the role of compression nut 3 compression of three parts . Tighten the nuts 3:00 , lined butterfly valve ferrule 2 is advanced 24 degree taper hole and subsequently deformed, so that the card with Hydraulic hose fittings body cone sleeve forming spherical contact seal ; Meanwhile , the card edge embedded steel inner sleeve 4 the outer wall of the outer wall of the pressure out a ring groove , which play the role of a reliable seal . The best choice for stress relief annealing steel pipe 20 # fine extubation , it is a good card kit blade embedded in the outer surface of steel pipes , play a reliable seal.

flared fittings

flared fittingsUsing flaring tube ends are sealed , no additional seals. Simple structure , suitable for thin-walled pipe Hydraulic pipefittingcouplingSuitable for oil and gas as a medium low pressure piping system that allows the use of pressure are shown in Table 41

card sets of pipe joints

card sets of pipe jointsStuck pipe deformation using the card sets and sealed , advanced structure , good performance , light weight , small size, easy to use, widely used in hydraulic systems. Working Hydraulic tube fittings pressure up to 31.5MPa, required pipe size , high precision, cold drawn steel pipe required . Card sets are also high precision . For oil, gas and general corrosive media pipeline system

Welded pipe joints

Welded pipe jointsUse over and pipe welding . Between the connector body and takes over the O -ring seal . Simple structure, easy to manufacture , sealing, pipe size for less precision . Requires Hydraulic adapters high quality welding , assembly and disassembly inconvenience. Working pressure up to 31.5MPa, operating temperature -25 ~ 80 ℃, as the medium for the oil pipeline system

hydraulic pipe fittings and pipe joints difference between normal

hydraulic pipe fittings and pipe joints difference between normalThe largest and most significant difference is that the hydraulic pressure of the hydraulic pipe fittings amazing large , hydraulic tubing impact of sudden burst of oil is large. I say this certainly can not replace a dedicated with a common connector , because the hydraulic pressure can all be under great pressure normalpressure up to 0.5 already dying, now we hydraulic tube fittings gap compared to foreign countries too , Hydraulic pipe fittings network of excellence hydraulic session to remind you a lot of friends to communicate the development of China's own hydraulic tube fittings . Quick hydraulic hose fittings principleQuick coupler , one is with a one-way valve , one is without a check valve . Application with check valve , check valve connected to a source terminal of the gas , when the check valve automatically shut off , turned on the free end of the thimble -way valve is opened . Is the use of self-locking ball embedded in the groove , and also by " cone --- cylindrical " sleeve to lock the ball .

Classification of fittings

Classification of fittingsHydraulic hose , high pressure ball valves , intentions odd quick connector ferrule fittings, welded pipe fittings, high pressure hoses.Transition fittings , ferruleHydraulic tube fittings, tee pipe fittings, non-standard pipe fittings, flare fittings , angled fittings , rotary tube fittings, quick connectors , stainless steel pipe fittings, copper fittings .

Carbon steel flange

Carbon steel flanges are blank in the axial direction upsetting , forging horizontal projection mostly symmetrical shape. Select forging step when forming their degree of difficulty is divided into: ordinary forgings, forging deep high wheels and so on. Upsetting cylinders by removing the oxide scale on the blank , and then rising slightly upsetting the billet-tipping , remove the end surface of the oxide. Hydraulic tube fittings billet diameter of more than spoke , reaching the middle of the rim is appropriate, so can not produce at the hub folded and filled with large diameter carbon steel flanges , forging hammer on a single furnished no less upsetting station circumstances , can be two joint forging hammer . A hammer upsetting, another final forging hammer , forging easy as full , upsetting the final forging diameter as close as possible , so that in the final forging billet steel flanges in the positioning accuracy and can avoid collapse . In forging batch is small and easy to fold out of the case , but also directly in the final forging die bore in upsetting and final forging . This method should be used with caution because of the lower die life , and pay special attention to the removal of oxide . High wheel forgings used in deep step is: upsetting, upsetting shaping , final forging . In order to make the final forging billet in the mold chamber for easy positioning , is conducive to the hub is full , an increase of upsetting step , pre- forging a concave hole , flip after the final forging forgings to ensure full , or to avoid collapse , the need to improve the carbon flange flow conditions using pre blacksmith step Hoop larger pieces , such as no pre-forging , may be folded . Pre- forging , molding conditions improved . But in a hammer is sometimes arranged not open , you need to use two joint forging hammer . For these forgings, other devices can also be prepared in advance, the ring blank , and then the final hammer forging . For a high narrow bead of forgings, forgings in order to ensure full , but also uses pre-forging . As a diesel locomotive forgings forging process , the convex portion is placed on the mold in order to facilitate full , forgings increased lower central oblong craft boss , so to be positioned Hydraulic adapters die forgings . When forging flat , width is large, blank after flattening pan into the final forging of squash, entrapment , and then into the final forging broad face examples . For large changes in forging cross-section , can be shoulder press step . The flange cover flange fork forgings forging process . Since forging four larger width , and in order to make the blank after entrapment in the final forging die bore easily locate pendulum steady, not flip blank after entrapment , pan set man final forging . Upsetting The purpose is to make end formation , to avoid the folding and descaled . This is upsetting flange cake different. Full of difficult pre-forging forgings should be considered . Cylindrical gears for heavy duty vehicle active examples . Forging large diameter flange portion , a small thickness , the module can be arranged in the case of the use of pre- forged flange to improve flow conditions , help

Carbon steel flange

Carbon steel flange forging the blank is in excellent shape deformation conditions , take good quality forgings ; safe and convenient operation ; former consumes less ; production efficiency. Choose carbon steel flange forging step is based on Hydraulic pipe fittings Hydraulic pipe fittings of carbon steel flange cover features ; equipment conditions and production conditions ; production volume as well as technical and operational workers operating habits. In considering the forging step , often involves the following questions without precedent for the purpose of forging forgings approximate reference ; without use less possibility of forging step to complete , such as forging steel flanges cover without rolling direct final forging , without stretching dough with rolling extension , etc. ; pair have both pros and cons of working steps Hydraulic hose fittings , whether it is necessary to use the pre- forging ; how to reduce scrap losses , to try to reduce the use of materials clamping head or completely without clamp top ; able to reduce waste in the manufacturing process of the turn around times billet so easy to operate ; possibility of introducing a U-turn forged , multi- piece forging, forging together to improve the molding conditions, and improve the production of carbon steel flange cover efficiency, reduce scrap losses ; forgings for complex shapes or other reasons, the possibility of a joint forging process ; after doing the analysis and comparison of hammer forging process to give up and instead use other processes may be more reasonable . Select forging step problem is complex and flexible problem forgings based on the characteristics of the process described in general forging step , select the law and should pay attention to.

hydraulic control valve

Hydraulic fluid used to control the pressure, flow and direction components. Wherein the control pressure is called pressure control valve to control the flow of known flow control valve to control the communication, the direction is called off and the flow control valve.By adjusting the flow control valve spool and valve body between orifice area and local resistance it generates flow rate is adjusted to control the velocity of the actuator. Flow control valve use is divided into five kinds. ① throttle: fixed orifice area in tune after the load in a uniform pressure changed little less demanding and motion actuator velocity remained largely stable. ② control valve: pressure changes in load can keep the throttle valve pressure drop is constant. Thus, in the orifice area after it is set, regardless of how the changes in load pressure, control valve can maintain a constant flow through the throttle valve, so Hydraulic tube fittings that the movement of the actuator speed and stability. ③ shunt valve: no matter the load size, can make the same oil source for the two actuators for the same amount to get equal flow diverter valve or sync valve; been prorated for the proportional flow diverter valve. ④ manifold valve: the role of contrast with the diverter valve so that flow manifold Hydraulic pipe fittings. ⑤ flow diversion valve: both shunt valve and manifold valve two functions. Directional control valves use is divided into one-way valve and valve. ① check valve: allows only unidirectional flow in a pipe connected, the reverse is cut off valve ②: Changing between different piping through, broken relationships, based on the work of the spool valve body position in the number of two , three, etc.; according to the number of channels controlled by a two-pass, three, four, five pass, etc.; spool drive under sub manual, mechanical, electrical, hydraulic, etc.. Figure 2 is a three way valve works. The supply port P, O is the return port, A, B is an output port leading to the actuator. When the spool is in the neutral position, all ports cut off, the actuator does not move; when the spool is moved to the right position, P-and A-pass, B, and O-pass; when the spool is moved to the left position, P and B pass , A and O pass. Thus, the actuators can be positive, negative campaign. The late 1960s, in the several hydraulic control valve developed on the basis of electro-hydraulic proportional control valve. Its output (pressure, flow rate) with the input signal can be continuously changed. Electro Hydraulic hose fittingscontrol valve according to different functions, accordingly divided into electro-hydraulic proportional pressure control valves, electro-hydraulic proportional flow control valves and electro-hydraulic proportional directional control valve.

hydraulic control valve

Hydraulic fluid used to control the pressure, flow and direction components. Wherein the control pressure is called pressure control valve to control the flow of known flow control valve to control the communication, the direction is called off and the flow control valvePressure control valve use is divided into relief valve, pressure reducing valve and sequence valve. ① relief: to control the hydraulic system reaches the set pressure to maintain a constant state. Called safety valve relief valveHydraulic tube fittings. When the system fails, the pressure rises to potentially damaging limit, will open the overflow valve port to ensure system security. ② valve: branch circuit to control oil pressure than is the stability of the main circuit pressure. It controls the pressure reducing valve according to different functions can be divided into fixed value regulator (output pressure at a constant value), fixed differential pressure relief valve (pressure difference between the input and the output is a fixed value) and fixed ratio valve (between input Hydraulic adapters to maintain a certain percentage). ③ sequence valve: allows an actuator (such as hydraulic cylinders, hydraulic motors, etc.) after the action, and then in order to enable other actuator action. Figure 1 shows the sequence valve works. Pump pressure generated by the hydraulic cylinder 1 is first push motion, through the sequence valve in the inlet acting on the area A, when the hydraulic cylinder 1 is completely into motion, the pressure rise, acting on the area A is greater than the upward force of the spring it is set value, the spool up the inlet and outlet port connected to the hydraulic cylinder 2 motion.

hydraulic parts

Cylinder using carbon steel imported from Germany, honing diameter, diameter tolerance of H7 ~ H9 level, surface roughness of 03 ~ 0.6μm, tensile strength of 50 kg / mm2 or more.Piston rod:Hydraulic pipe fittings of carbon steel imported from Germany, the outer surface of honing, plating hard Luo. Surface roughness 0.6 ~ 0.08μm.Seals: Seals and other seals are made of high-intensive products imported from Italy, oil, corrosion resistance, abrasion resistance, wear and tear, resistant to pressure.

Elbow

Stamping elbow is applied at the corner pipe fittings, in actual use, is widely used, often in construction, machinery, chemicals, electric power, shipbuilding and other industries applications, elbow angle can be divided by 45 °, 90 °, 180 ° in three forms; short radius can be divided by the radius, long radius; elbow on different materials need to select a different process. Stamping elbow commonly used process of cold extrusion, stamping and hot push. Since stamping flexibility and toughness is better, so stamping materials of the elbow shaped in a manner common cold extrusion, the next good material into a mold rough elbows, after closing the upper and lower mold, Hydraulic pipe fittings Hydraulic pipe fittingsin effect, punching Elbow blank space inside the mold movement along the complete shape. Use mold cold process production of stainless steel elbow with a smooth surface, high dimensional accuracy, small error. For the use of cold forming, the shape should be carried out after forming heat treatment for stress relief. Stamping elbow visual inspection should be carried out piece by piece, and should meet the relevant standards, punching elbow surfaces should be smooth without scale, the elbow must not depth greater than 5% of the nominal wall thickness, and the maximum depth of not more than 0.8mm folded, rolled off, separation and other defects. Hydraulic hose fittings Hydraulic hose fittings surface depths exceeding 12% of the nominal wall thickness of 1.6mm or greater mechanical scratches and pits should be removed, for carbon steel and austenitic stainless steel stamping elbow, each batch should be drawn and not less than 3% 2 do hardness test, the results are subject to a failure, should be doubled tested, if there is still a failure, should be individually examined. Steel elbow for hardness testing should be carried out piece by piece. Low temperature steel elbows, low temperature impact test must be done, the same batch of test pieces should select the base metal, and are willing to have the same end with the elbow heat-treated condition. Stamping elbow bend at the surface before painting should be thoroughly cleaned until visible metal color and flash, burrs, oil, etc. to eliminate Clean; rust film should be uniform, no bubbles, wrinkles and peeling; according to the different materials are packed, and moisture measure.

Flat welding flange

 the temperature range of users should be allowed in the hose quality specifications used within a temperature range of hose. If the working environment temperature exceeds this range, it will affect the life of the hose, which will greatly reduce the ability to withstand pressure. Operating ambient temperature is too high or too low, long-term system, we recommend using the hose jacke the chemical compatibilityIf you use special hydraulic medium, users should ensure that their choice of Hydraulic tube fittingsinner and outer, joints and O-ring compatible with themedia. the bending radius
Meaning: as the right, R is the hose can be bent without damage or shorten the life of the inner circle (minimum) radius. For a hose, R value is certain. If the bend radius is less than when using the R value with the textile reinforcing layer is likely to occur hose kinks. Use a spiral wire hose would be better.the friction hose when used usual contact or friction with hard objects, the proposed increase in the external hose spring jacket.

carbon steel flange

Hoop larger pieces, such as no pre-forging, may be folded. Pre-forging, molding conditions improved. But in a hammer is sometimes arranged not open, you need to use two joint forging hammer. For these forgings, other devices can also be prepared in advance, the ring blank, and then the final hammer forging. For a high narrow bead of forgings, forgings in order to ensure full, but also uses pre-forging. As a diesel locomotive forgings forging process, the convex portion is placed on the mold in order to facilitate full, forgings increased lower central oblong craft boss, so to Hydraulic ferrules Hydraulic ferrules in the lower die forgings. When forging flat, width is large, blank after flattening pan into the final forging of squash, entrapment, and then into the final forging broad face examples. For large changes in forging cross-section, can be shoulder press step. The flange cover flange fork forgings forging process. Since forging four larger width, and in order to make the blank after entrapment in the final forging die bore easily locate pendulum steady, not flip blank after entrapment, pan set man final forging. Upsetting The purpose is to make end formation, to avoid the folding and descaled. This is upsetting flange cake different. Full of difficult pre-forging forgings should be considered. Cylindrical gears for heavy duty vehicle active examples. Forging large diameter flange portion, a small thickness, the module can be arranged in the case of the use of pre-forged flange to improve flow conditions, help

carbon steel flange

Carbon steel flange forging the blank is in excellent shape deformation conditions, take good quality forgings; safe and convenient operation; former consumes less; production efficiency. Choose carbon steel flange forging step is based on the technology of carbon steel flange cover features; equipment conditions and production conditions; production volume as well as technical and operational workers operating habits. In Hydraulic adapters step, often involves the following questions without precedent for the purpose of forging forgings approximate reference; without use less possibility of forging step to complete, such as forging steel flanges cover without Rolling direct final forging, without stretching dough with rolling extension, etc.; pair have both pros and cons of working steps how to choose, whether it is necessary to use the pre-forging; how to reduce scrap losses, to try to reduce the use of materials clamping head or completely without clamp top; able to reduce waste in the manufacturing process of the turn around times billet so Hydraulic hose fittings; possibility of introducing a U-turn forged, multi-piece forging, forging together to improve the molding conditions, and improve the production of carbon steel flange cover efficiency, reduce scrap losses; forgings for complex shapes or other reasons, the possibility of a joint forging process; After doing the analysis and comparison of hammer forging process to give up and instead use other processes may be more reasonable. Select forging step problem is complex and flexible problem forgings based on the characteristics of the process described in general forging step, select the law and should pay attention to.
     

Hose Assembly Selection

 the temperature range of users should be allowed in the hose quality specifications used within a temperature range of hose. If the working environment temperature exceeds this range, it will affect the life of the hose, which will greatly reduce the ability to withstand pressure. Operating ambient temperature is too high or too low, long-term system, we recommend using the hose jacke the chemical Hydraulic tube fittings  you use special hydraulic medium, users should ensure that their choice of hose assembly hose inner and outer, joints and O-ring compatible with themedia. the bending radius
Meaning: as the right, R is the hose can be bent without damage or shorten the life of the innerHydraulic hose fittings. For a hose, R value is certain. If the bend radius is less than when using the R value with the textile reinforcing layer is likely to occur hose kinks. Use a spiral wire hose would be better.the friction hose when used usual contact or friction with hard objects, the proposed increase in the external hose spring jacket.

Hose Assembly Selection

Hose assembly usage affect many factors, only in accordance with the conditions and the correct selection of hose fittings, hose used in order to ensure the reliability and economy. These factors are:
1, hose sizeHose diameter Hydraulic pipe fittings, too small diameter pipeline will increase the flow rate of the medium, the system heat, reduce efficiency, and will produce excessive pressure drop, affecting the overall system performance, if the hose with hose clamps fixed or wear over steel and other spacers, they should also pay attention to the outside diameter of the hose.
2, the working pressureGenerally refers to dynamic pressure hose hose in continuous maximum allowable working pressure. In accordance with the provisions of the relevant international standards for hydraulic hose safety factor is generally recommended working pressure of the hose is usually a quarter of the minimum burst pressure values.
3, the impact stress and fatigue lifeThe selection is based on the hydraulic hose system design maximum pressure value determined. As the hydraulic system pressure value is usually Hydraulic adapters  impact pressure, impact pressure peak is much higher than the maximum system pressure. However, the system generally have a relief valve, the impact pressure of the hose will not seriously affect the fatigue life. For particularly frequent shock pressure of the hydraulic system, suggested the use of particularly resistant to impact pulsation hose products.

hose assembly assembly assembly length representation

Set along the same line hose assembly to a distal joints in the vertical direction as a benchmark, Hydraulic tube fittings another connector and the angle between the vertical joints α, this angle α is rack mounts.

hose assembly - characteristics and uses

High pressure hose assembly is normally provided bytheliquidresistantsynthetic rubber inner layer, middle layer, Ⅰ tolayerwirebraidreinforcement,andweather-resistant synthetic rubber with excellentperformance cover. Mainly used in hydraulic support mine, oil field exploitation, suitable for construction, lifting transport, Hydraulic hose fittings, mining equipment, ships, injection molding machinery, agricultural machinery, machine tools and variousindustrial sectors mechanization and automation of Hydraulic pipe fittings system has a certain pressure and temperature based (such as mineral oil, soluble oil, hydraulic oil, fuel oil, lubricating oil) liquid, water-based liquids (such as emulsion, oil-water emulsion, water), gas and liquid transmission and other fields.

hose assembly Introduction

Hose (hose) assembly is a hydraulic system used in an auxiliary device. It is composed of high-pressure steel wire braided or spiral rubber hose and steel fittings made by the withholding of special equipment used to connect various types of hydraulic components, hydraulic systems, mainly used in the operating temperature -40 ℃ to +100 ℃ conditions, Hydraulic adapters Hydraulic adapters transmission or conveying water, gas, oil pressure medium, in order to ensure that the liquid circulation and transmission fluid energy.

JIC hydraulic fittings

Siamese full deduction double hexagon connector, also known as American JIC female 74 ° inner cone piece connector, CNC machining throughout its entire product, the product in accordance with the standards of production Yonghua, to meet customer demand,Hydraulic tube fittingsHydraulic tube fittings  slightly, but does not The use of joints affected. The connector can be used for US-made thread or US-made three-piece hydraulic pipe transition joints matching external thread. American JIC fittings hydraulic fittings desktop Siamese Siamese full Hydraulic pipe fittingsHydraulic pipe fittings joint production process, strict control by the three engineers size requirements, making the processing out of the connector size in full compliance with the technical requirements of the drawings. After surface treatment, finished products sold to customers, workers need to go through selection, there are bad or serious bumps surface treatment, should be dealt with obsolete products

Overview of marine pipe fittings

 Marine pipe fittings are connected to piping parts. According to the connection methods can be divided into socket fittings, threaded pipe fittings, flanges, fittings and welded pipe fittings Jic hydraulic fittings. Multi-use of the same material of the pipe. There elbows (elbows), flanges, tees, crosses tube (Phillips) and the diameter pipe (size of the head) and so on. Turn the place for pipe elbow; flange for tube and pipe interconnected parts, connected to the pipe end; tee pipe together for three places; Stone pipe pipe together for four places; Hydraulic pipe fittings used for different diameter pipes connected to two places. China's shipbuilding industry has now become a world superpower, ship completions are increasing every year, marine fittings usage has also increased. The Chinese shipbuilding industry and the rapid development of shipbuilding industry has been lagging compared, marine fittings with good space for development.

Pipe production process of these situations

Three low pressure production process according to the low-pressure three different specifications of cutting. After the first blast cutting, to the surface before forming the oxide scale removal. Forming the hydraulic bulge forming method. There are molds, flat bottom, top with flange holes. After the tube into the tube with a hydraulic cylinder fixed on both sides of the liquid filled into the bulge inwards,  Hydraulic ferrules tube "convex" shape, and then removed from the correct place at the protrusion, the groove is labeled. It has to go through twice shot peening. As the processing process, there is hardening, so it needs treatment.

Flange separation purposes

Pipeline maintenance, pipeline construction, testing and flange replacement, maintenance, gaskets, Hydraulic adapters, cylinder head open, power plants, bearing removal, electricity and oil drilling, rotor removal, offshore platforms, lifting work, shipbuilding, industrial device, the horizontal movement of the workpiece and other industries.

Hydraulic Flange Machine

Has an independent Jic hydraulic fittings and electrical control systems, centralized control buttons to move and the linkage with two modes of operation, the pressure and stroke can be adjusted within the provisions of its reasonable structure, small size, low energy consumption, efficiency engage in, no noise. Loading and unloading quick and easy to use, simple operation, high load capacity, long life, Hydraulic pipe fittings, quality and reliability of a machine and many other advantages, instead of the original steel plate material, docking, correction, lathe and other complex processes and saves oxygen , acetylene, labor, raw materials, etc., is an advanced machine tools manufacturing flanges.

Hydraulic Flange Forming Machine

The aircraft is carbon steel, stainless steel, non-ferrous metal (angle iron, steel, channel steel, pipes, etc.) roll having a diameter φ320-φ6000mm ring and flange a high quality,Jic hydraulic fittings devices. Its unique structure, small size, low power consumption, high efficiency, no noise, easy installation, simple operation, high load capacity, long life, rolling speed, product quality and reliable. Instead of the original steel plate material, docking, correction, lathe and other complex processes and saves oxygen, acetylene, labor, raw materials, etc., is an advanced machine tools manufacturing flanges. The product is widely used in wind turbines, bridges templates, chemical equipment, cable trays, Hydraulic pipe fittings switch, centrifuges and other machinery and equipment industry applications. Also suitable for external processing, lucrative.

High-pressure metal pouring principle elbow

High elbow main tool metal pouring ladle, the ladle containing the molten metal temperature, operating in a certain degree of risk. Pouring, ladle filled with molten iron, the center of gravity lower than 100 mm above the shaft, a capacity greater than 500 kg ladle, and can be equipped with self-locking rotary mechanism. Pay great attention to safety. Ladle shaft have safety devices to prevent accidental tilt. Hydraulic pipe fittings device to be set up protective shell to prevent the entry of flying metal stuck. Leftover liquid metal poured into ingot molds and sand will only be allowed in; pour ago, ingot mold to be preheated to 150 ~ 200 ℃, sand pit to dry. Before the test, to remove dirt, rust, oil. Hydraulic adapters to have cracks, cracks, bending, weld and bolt connection is bad, rivet connection is not reliable so on, must replace them or repair

45 degree connector

45 degree bend connector: Thread Size: inch thread (G)
Material: A, C, F parts are made of high quality steel. D is made ​​of die-cast metal.Color: Metallic (Silver)Working temperature: -40 C to 100 C, instant heat-resistant up to 120 C Hydraulic adapters Hydraulic adapters: Cabinet after bonding and 45 degrees, thick zinc alloy, beautiful appearance, compact structure,

90 degree connector

90 degree bend connector: Thread Size: inch thread (G)Material: A, C, F parts are made of high quality steel. D is made ​​of die-castmetal.Color: Metallic (Silver)
Working temperature: -40 C to 100 C, instant heat-resistant up to 120 C.Product features: 1, after bonding and cabinet 90 degrees, thick zinc alloy, beautiful appearance, compact structure Hydraulic pipe fittings Hydraulic pipe fittings.2, except for the following standard specifications, it may change according to needs of any size and thread standards.

DGJ connectorMetal hose connector

Structure and Characteristics:
DGJ from the solid metal hose connector, can no threaded pipe or non-threaded device outlet with hose connection, save the threading process;Metal joints made ​​of zinc alloy die-casting, zinc plated, brushed, or chrome; compact structure, high strength. Steel and Hydraulic tube fittings Hydraulic tube fittings, reliable, attractive appearance;This is self-fixed metal joints, metal hose is used to connect to Hydraulic ferrules or non-threaded pipe outlet on the device;Metal hose adapter: JS type, JSH type, JSB type, JSHG type;Adapter Pipe: thin steel wire tube, black, galvanized iron pipes (water, gas pipes);DGJ selection from the solid metal hose connector hose pipe connection, please note that the specifications, dimensions. .

DKJ connector Metal hose connector

Structure and Characteristics:DKJ card sets metal hose connector, can non-threaded steel pipe and hose connections, save the threading process, you can simply screw into;Metal joints Jic hydraulic fittings Jic hydraulic fittingsdie-casting, zinc plated, brushed or chrome; compact structure, high strength. Steel and metal hose connection, reliable, attractive appearance;This metal connector for the card sets, metal hose is used to connect to non-threaded pipe above;Metal hose adapter: JS type, JSH type, JSB type, JSHG type;Adapter Pipe: thin steel wire tube, black, Hydraulic hose fittings Hydraulic hose fittings (water, gas pipes);Use metal connector DKJ card sets, please note the connection pipe hose specifications, dimensions.

DPJ fitStructure and Characteristics

Metal hose connector (4)
DPJ externally threaded metal hose connector termination is JB / GQ 0552/83 D95-5 metal connectors of extension products;
Metal joints made ​​of zinc alloy die-casting, zinc plated, brushed, or chrome; compact, non-porous, Hydraulic pipe fittings Hydraulic pipe fittings connection with metal hose, aesthetic appearance;
This termination type Hydraulic adapters Hydraulic adapters is used to connect the metal hose on the straight line connecting the cabinet member;
Metal hose adapter: JS type, JSH type, JSB type, JSHG type;
Recommended use imperial or metric threaded metal hose connector metal joints;
Can be customized non-standard metal hose joints and special metal joints.

Metal hose connector

Metal hose connector is a modern industrial pipeline of a high quality flexible pipe. It mainly consists o MOLLET metal hose connectorBellows, nets and joint components. Its inner pipe having a spiral or annular wall stainless steel bellows, bellows outer nets, is made of stainless steel wire or woven by a certain parameter. Hydraulic tube fittings Hydraulic tube fittings at both ends of the pipe joints with customers or flange mating. Bellows hose is made of very thin-walled stainless steel seamless or welded congregation precision plastic processing after forming. Because theHydraulic ferrules Hydraulic ferrules of the bellows determine the contour hose has good flexibility and fatigue resistance, making it very easy to absorb deformation of the cyclic loading a variety of sports, particularly in the piping system has the ability to compensate for a large amount of displacement. Media Visualization (mediated visual), process automation.

Metal hose connector

Metal hose connector is a modernJic hydraulic fittingsJic hydraulic fittings of a high quality flexible pipe. It mainly consists of bellows, nets and joint components. Its inner pipe having a spiral or annular wall stainless steel bellows, bellows outer nets, is made of stainless steel wire or woven by a certain parameter.

Pressure hose fittings Installation Considerations

(1) hose in motion or stationary, it can not bend over, nor bend in the roots, at least 1.5 times the diameter at its bend at the beginning; (2) to move to the extreme position the hose Jic hydraulic fittings Jic hydraulic fittings, you should compare relaxation; (3) try to avoid the hose torsional deformation; (4) hose as far away from the heat radiating member, if necessary, fashion insulation board; (5) should be avoided hose external damage, such as the use of long-term friction with the surface of the component, etc.; (6) If the weight caused by excessive deformation of the hose, there should be support member.

Pipe joints to prevent leaks in the hydraulic system,

both the metal pipe fitting, or hose fittings, there are prone to leakage problems. For ferrule fittings, mostly due to pipeline subject to greater external force or impact, so that the card sleeve loose or deformed face caused by leaking pipe, you should check whether the card holder out of round, whether the defect edge, whether the pipe ends intact and nut, compression level, etc., while also eliminating pipeline force. For flared fittings, mostly due to excessive flaring, quality, undesirable or multiple demolition, resulting in flared cracks or deformation caused by leaks, then you can be re-flared front truncated. If you use a male and Hydraulic hose fittings Hydraulic hose fittings, the leakage is mostly due to two cone damage, available on the cone abrasive grit grinding. In some with "о" or outer-ring face seal by the occasion, the leakage following reasons: "о" ring aging or deformation caused by leakage; "о" ring assembly is not in place, so that the two plane connection when pressure is uneven or "о" ring being cut cause leakage; "о" rings uncompacted, elastic deformation caused by Jic hydraulic fittingsJic hydraulic fittings; "о" spigot ring groove too deep and cause leaks. In this regard, the need to re-select the same diameter and cross-sectional thick "о" rings can also be sealed with a rabbet plane for cutting grooves or grinding to reduce the rabbet groove depth, so that "о" rings are flexible enough to deformation (compression should generally be between 0.35-0.65mm). For the use of oil and rubber, wool felt, soft steel cardboard, combined sealing gasket or sealant leaking pipe joints, whether any material, you should first check the seals for damage, deformation, aging and rough through the large, etc. and then take the appropriate measures.

Card sets of pipe joints assembly

(a) pre-installed ① type tube fittings preinstalled most important aspects of a direct impact on the reliability of sealing. Generally require a dedicated preheater. Small diameter connector can be pre-installed in a vise. In practice, with a connector as the parent, the nut, ferrule onto the tube can be pressed. There are card sets straight couplings, sleeve type end through turn heads, ferrule tube fittings and other types. I found that even in the same factory shipment, these types of connector body tapered hole depth is often not the same, the result is caused by a leak, Hydraulic tube fittingsHydraulic tube fittings is often overlooked. The correct approach is, the pipe end what kind of connector body connection, the corresponding connection terminal is preloaded with the same type of connector, so to avoid possible leakage problems. ② pipe end should be flush. After sawing Jic hydraulic fittings Jic hydraulic fittings grinding wheel and other tools, and deburring, cleaning with high-pressure air to blow before use. ③ pre-installed, you should try to keep the tube and the coaxial connector body, if the pipe deflection is too large will cause seal failure. ④ preloaded force should not be too large so that the ferrule tube embedded in the outer wall just inside the edge, card sets shall have no deformation. During pipeline connection, then the provisions of the tightening force assembled. ф6-1 card sets tightening force is 64-1 15n, 16фmmr 259n, ф18mm for 450n. If the pre-deformed when the card holder will lose the seal.
(Two). Prohibit adding sealant filler. It was sealed in order to achieve better results, apply sealant v Hydraulic ferrules, the results sealant being washed into the hydraulic system, hydraulic components causing blockage damping hole fault.
(III). Connecting pipe should be sufficient deformation of the tube margin, to prevent the tube subjected to tensile strength.
(Four). Connecting pipe should avoid subjecting it to lateral forces, lateral forces caused Mifengbuya Hydraulic pipe fittings Hydraulic pipe fittings Assembly.
(Five). Connecting pipe should be a good one, to avoid multiple disassemble, otherwise it will seal performance deteriorated.
Ferrule tube fitting installation (1) according to Chapter 9 requires the need for pickling pickling pipes should be; (2) according to the required length by sawing or dedicated pipe cutter pipe cutting machines, etc., and definitely not with Fusing ( such as flame cutting) or grinding wheel cutting; remove the pipe ends inside and outside round burrs, metal chips and dirt; fittings rust removing agents dirt; while also ensuring tube roundness; (3) the nut, ferrule has set into the tube , ferrule front edge (small-diameter end) from the tube mouth at least 3mm, then the pipe intoHydraulic adaptersHydraulic adapters tapered bore, top to date; (4) Slowly tighten the nut, turn the tube until it does not move, and then tighten the nuts 2 / 3 to 4/3 laps; (5) open the inspection has been cut into the pipe sleeve, the location is correct. Card sets are not allowed axial movement can be slightly rotated; (6) Tighten the nuts again after passing the examination.

Hydraulic fittings and pipe joints common difference

The largest and most Jic hydraulic fittings Jic hydraulic fittings is that the hydraulic pressure of the hydraulic pipe fittings amazing large, hydraulic tubing impact of sudden burst of oil is large. I say this certainly can not replace a dedicated with a common connector, because the hydraulic pressure can all be under great pressure, normal pressure up to 0.5 already dying, now we hydraulic tube fittings gap compared to foreign countries too, the hydraulic network of excellence hydraulic session to remind you a lot of friends to communicate the development of China's own hydraulic tube fittings. Quick hydraulic hose fittings quick coupler principle, one is with a one-way valve, one is without a check valve. Application with check valve, check valve connected to a source terminal of the gas, when the Hydraulic ferrules Hydraulic ferrules shut off, turned on the free end of the thimble-way valve is opened. Is the use of self-locking ball embedded in the groove, and also by "cone --- cylindrical" sleeve to lock the ball.