Coupling of relevant knowledge

Impeller fluid coupling power transmission coupling method is to use two of the impeller has no mechanical contact , by means of the hydraulic oil for power connections. hydraulic coupling constant filling fluid coupling into and variable speed fluid coupling, hydraulic coupling constant Hydraulic adapters Hydraulic adapters filling of 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 input and output speed ratio , the other functions and constant filling fluid coupling essentially the same

Fluid coupling install video

Many new and old customers and friends for fluid couplings are still do not know, now I am going to give you some information about hydraulic coupling go into detail knowledge . Fluid coupling finite rectangular and variable speed fluid coupling, there is oil and water media coupling medium , water transfer fluid coupling medium power is 1.15 times the oil medium , the liquid is a non- working medium rigid coupling , also known as hydraulic couplings. Fluid coupling the pump wheel and turbine components of a  Hydraulic ferrules liquid can flow in a closed working chamber circulation pump wheel mounted on the input shaft , a turbine mounted on the output shaft of the power machine ( engine , electric motor , etc. ) to drive the input shaft rotation , the liquid thrown by centrifugal pump wheel , after this high-speed fluid into the turbine rotates a turbine , the energy obtained from the pump wheel to the output shaft , and finally the liquid return pump wheel , the flow of the formation cycle . By liquid fluid coupling with the pump wheel, turbine blades interaction of the change in angular momentum transfer torque , which is equal to the output torque of the input torque minus the friction torque, so it is less than the output torque constant input torque , hydraulic coupling between the input shaft and the output shaft by liquid contact , work does not exist rigid connection between components .

Fluid coupling Profile

Fluid coupling finite rectangular and variable speed fluid coupling, there is oil and water media coupling medium , water transfer fluid coupling medium is oil medium power 1.15 times . Fluid coupling as Hydraulic hose fittings  working fluid is a non-rigid coupling medium , also known as hydraulic couplings. Hydraulic coupling of the pump wheel and turbine liquid can form a closed working chamber circulating pump wheel mounted on the input shaft , turbine mounted on the output shaft. Power machine ( engine , electric motor , etc. ) to drive the input shaft rotates, the liquid is thrown centrifugal pump wheel . This high-speed fluid into the turbine after the turbines rotate the energy obtained from the pump wheel to the output shaft . Finally liquid return pump wheel , forming a cycle of flow

hydraulic coupling

Fluid coupling fluid as the working medium Hydraulic adapters Hydraulic adapters a non-rigid couplings , also known as hydraulic couplings.
Hydraulic coupling of the pump wheel and turbine liquid can form a closed working chamber circulating pump wheel mounted on the input shaft , turbine mounted on the output shaft.
Power machine ( engine , electric motor , etc. ) to drive the input shaft rotates, the liquid is thrown centrifugal pump wheel .

constant filling fluid coupling 5 features

 constant filling fluid coupling 5 features
( 1 ) can be isolated torsional vibration ,Hydraulic tube fittings  shock and vibration reduction , to effectively prevent mechanical wear, extend equipment life .
( 2 ) to improve the motor starting performance , reduce the starting current, reduced start-up time .
  3 ) with overload protection function, when the load is overloaded to protect the motor will not stuffy car and burned .
( 4 ) simple and reliable , no mechanical wear, no special maintenance .
( 5 ) in a multi -drive system, can automatically adjust the load evenly prime mover

constant filling fluid coupling power-saving features

saving operation . Start using the motor maximum torque load during steady state operation of the motor at or near the rated conditions , improved motorefficiency and power factor , reducing their losses,Hydraulic ferrules achieve the purpose of energy saving operation . , Using the fluid coupling, motor load at high speed after starting the maximum torque starting loads, such as match properly, the motor can be about 95% of peak torque ( instead of starting torque ) , to start the load ; thereby improving motor start load capacity , thus reducing the base with motor number, change the "big horse car" underrun condition .

constant filling fluid coupling power-saving features

motor load starting energyHydraulic coupling , the motor and the load starts to separate , so the starting current staggered , do not stack ( not used when the fluid coupling , the motor rotates together with the rotor directly drive the load , the starting current is determined by  Hydraulic adapters motor starting current and load their own start- current superposition , so peak large ) , reducing the starting current peak and duration , reducing the power loss , so start saving . Especially in multi- motor drive, the order of execution delayed start time , can stagger the motor starting current , starting current peak total dropped substantially, start saving more significant

fluid coupling comparison with the inverter

1 Tuner directly driven by the motor because the machine , so need to use than the actual motor power of the motor, in order to help achieve a smooth start.
2 fluid coupling drive prices are generally Hydraulic tube fittings  lower than 20% , greater power is only 50-70% of the price of the drive system .
3 high-order wave inverter output will reduce motor efficiency, increase heat. For cooling, the motor need to increase or install cooling fans . ( Motor cooling function and speed is proportional to the motor with fluid coupling designed for constant speed ) .
4 waves are generated by the inverter may damage the flexible coupling torque spikes and even machines.

aqueous medium fluid coupling 4 major advantages

Fluid coupling finite rectangular and variable speed fluid coupling, there is oil and water media coupling medium , water transfer fluid coupling medium is oil medium power 1.15 times .Here are Hydraulic adapters description:
1 ) Water spray fluid coupling medium after pollution, prevent gas explosions .
2 ) Because water is denser than oil , so the same specifications aqueous medium coupling power transfer coupling medium than oil increased by 15% .
3 ) an aqueous medium hydraulic coupling versatile, large amount , in addition to outside the coal mine equipment , food, chemical , pharmaceutical, textile and other industries do not allow oil pollution on the mechanical equipment can be used.4 ) with water as the medium , saving oil , which in itself is energy efficient.

Fluid coupling refueling requirements

1 user does not have more stringent requirements, rotatable fluid coupling housing , when oiling gagged from the vertical centerline of rotation to the highest point of about 55 °, just out of the cavity when the working fluid fluid coupling can be considered higher rated  Hydraulic ferrules ssion oil preferred . Recommended that users should be based on the actual size of the workload and working conditions to adjust the amount of oil-filled .
(2) When filling fluid coupling unscrew fill plug , the working medium through the mesh filter GF1W0.63/0.2 only after filling fluid coupling cavity . Filled with the appropriate working media , you should check and tighten all fluid coupling housing the fill plug and fusible plugs .
3 oil-filled fluid couplings minimum amount of work for 40% of the total volume of the cavity , filled volume is too small will lead to not fully lubricated bearings , thereby shortening the life of the fluid coupling .

fluid coupling overload protection

Fluid coupling is the use of a medium , the power to the prime mover from the motivation of the mechanical devices. For coupling with overload protection for his performance today Xiaobian to do according to the following analysis of this issue .Since no mechanical coupling is Hydraulic adapters connected , when the external load exceeds a certain limit , the pump wheel torque is no longer rising , as usual at this time the motor rotates the output decelerate to a stop , the power drawn from the power supply into thermal energy coupling to heat up, until Yi fusible plug ejection so that the input and the output is cut off , the protection of the motor , the working machine from damage , thereby reducing the failure rate of the machine , maintenance costs and downtime , to extend the service life of the motor load work .

Coupling of 7 Limitations

Hydraulic coupling occurs earliest , belonging to loss of power -controlled speed . But as technology advances , hydraulic coupling gradually the following limitations:1, due to fluid coupling power transfer with hydraulic oil , so the speed control is unstable , low power factor , speed accuracy is poor.
2, due to coupling of the two ends of the axle shaft , neck to beat big oil spill equipment will result in a . This will certainly lead to mechanical shafts and bearings dry grinding . Thus , the failure rate is high.
3, when the fluid coupling failure, the device can only stop running. Seriously affecting production4, the fluid coupling is a mechanical speed control device. The principle of hydraulic Hydraulic tube fittings  coupling determines the rate of loss of 8-10 % . Meanwhile power loss into heat, so that the hydraulic oil temperature is too high. Cooling water requires a large amount of hydraulic oil.
5, the hydraulic coupling low overall efficiency , the governor 's own loss, maintenance of large , secondary cost prohibitive.6 , in the actual operation at temperatures higher than 95 ℃ or more, so that the water cooler easily plug fouling , resulting in failure .7, the hydraulic coupling is the mechanical axis of the motor output of the mechanical and hydraulic coupling shaft ; speed change by the fluid through the fluid coupling coupled to the mechanical output of the fan shaft. Far away from the fan and motor efficiency is poor. A large installation space required , based on complex

hydraulic coupling gear failure causes

Large power station boiler feed pump hydraulic coupling gear shaft sudden rupture during operation , which is why, below you analyze .First, a large hydraulic coupling on the broken shaft gear usage , the chemical composition of the steel , high and low times , umbrella -phase structure , grain size , mechanical properties and fracture surface of  Hydraulic adaptersreal axis of the macro view of fracture for fracture , and Wei the observation and detection and analysis .Secondly, the analysis of large gear shaft of the production process and the use of profiles , using optical microscopy, scanning electron microscopy , transmission electron microscopy and X- ray spectrometer to observe and analyze the failure of the shaft fracture.

hydraulic coupling of the pump wheel and turbine

Fluid coupling finite rectangular and variable speed fluid coupling, the following is its knowledge of the pump wheel and turbine .
Fluid coupling the pump wheel and turbine components of a liquid can flow in a closed working chamber circulation pump wheel mounted on the input shaft , a turbine mounted on the output shaft Jic hydraulic fittings the power machine ( engine , electric motor , etc. ) to drive the input shaft rotation , the liquid thrown by centrifugal pump wheel , after this high-speed fluid into the turbine rotates a turbine , the energy obtained from the pump wheel to the output shaft , and finally the liquid return pump wheel , the flow of the formation cycle .
Fluid coupling by the liquid and the pump wheel , the momentum generated by the interaction of the turbine blade to transfer the torque moment changes , its output torque equal to the input torque minus the friction torque, so that its output torque is less than the input torque of the torque constant , coupling between the input shaft and the output shaft by liquid contact , working member rigid connection does not exist between

fluid coupling analysis of the situation of excessive fuel consumption

fluid coupling analysis of the situation of excessive fuel consumptionFluid coupling housing weld leak: check and repair ;Oil pipeline leak : to be eliminated ;Bearing gland Hydraulic pipe fittings surface vent migraine : resealed ;
Fluid coupling nipple discharge vent Mud: Check and tighten

metal hose fittings selecting the basic principles of adhesive

metal hose fittings selecting the basic principles of adhesive
Metal hose fittings selecting Hydraulic tube fittings basic principles of adhesives - Adhesives with special features and practical value in the metal hose connector is widely used . The world for different purposes than ten thousand kinds of adhesive above , the choice of adhesive , to be based on the following four indicators .( 1 ) anti-media functions( 2 ) Adhesion strength( 3 ) Temperature function ( 4 ) Curing time

Quick hose connector related functions introduced

Switching function : pneumatic, hydraulic fittings Tools , cylinder , hydraulic cylinder , the metal mold attachment related machinery .
Maintenance functions: computer cooling device , cylinder casting machine maintenance .Test functions: vacuum ,Hydraulic adapters pressure, leakage , running and other tests.Transport function: bolts, nuts and other solids conveying, handling and a conductive feature.Fill Function : inert gas , nitrogen , LPG, carbonic acid.
Connectivity: fishing rods , fasteners Pocket CD 's , mobile connectivity and fluid transfer operations outside use.

Quick hose connector Related Features

Quick hose connector Related Features
Switching function : pneumatic, hydraulic fittings Tools , cylinder , hydraulic cylinder , the metal mold attachment related machinery .
Maintenance functions: computer  Hydraulic tube fittings cooling device , cylinder casting machine maintenance .Test functions: vacuum , pressure, leakage , running and other tests.Transport function: bolts, nuts and other solids conveying, handling and a conductive feature.Fill Function : inert gas , nitrogen , LPG, carbonic acid.
Connectivity: fishing rods , fasteners Pocket CD 's , mobile connectivity and fluid transfer operations outside use.

hydraulic pipe joints failure prevention and solutions almost all joint

hydraulic pipe joints failure prevention and solutions almost all joint failures are avoidable , according to the following requirements can effectively prevent joint failure:Hydraulic adapters Hydraulic adapters① When using the instrument design components ( such as unified party components ) ;② Use the effect of a good joint member ( such as zero dead volume , ie the sample through of V0 = 0);
③ Press the required assembly and tighten the connector , do not overtighten ;
④ avoid muddy joints used in a timely manner well marked ;

hydraulic pipe joints completely or partially blocked by the following reasons

hydraulic pipe joints completely or partially blocked by the following reasons:
① no good filtration mobility ; ② samples for particulate ; ③ pump or injector gasket debris ; ④ pre-column , bollards and analysis column leaking stuffing ; ⑤ burrs and filings entered ;Hydraulic ferrules ⑥ mobile phase crystallization salt ; ⑦ ⑧ microorganisms into the system of other particulate substances

Pipe thread mainly used for pipe connection

Pipe thread mainly used for pipe connectionPipe thread mainly used for pipe connections , its internal and external thread closely , there are two kinds of straight pipe with the cone . The nominal diameter is the diameter of the pipe connection , apparently a large diameter than the nominal thread diameter . Hydraulic fittings and pipe joints greatest common most significant difference is that the hydraulic pressure is great staggering, hydraulic tubing impact of sudden burst of oil is large.System Hydraulic ferrules blocking phenomenon is rare, common is sintered filters ( glass sand core ) blocked. Segmentation method for detecting occlusion using the system piping , from back to front loosen joints were checked and find blocked pipe , it should be immediately removed to dredge or replacement . Department began blocking obvious, constantly remain in the flow of particles in the pressure will slowly rise , and finally completely blocked. Pipe blockage will also see the joints or gaskets leak , low pressure better, high-pressure leaks evident. A sintered filter or filters ( pore size 2-10um) to remove particles blocking the pipeline ( eg 0.25mm diameter ) . Occlusion is a major failure of hydraulic pipe joints , pipe completely blocked , the pressure will Hydraulic hose fittings overpressure . If the length of the rigid blocking substances , such as biological samples biochemical substances ( proteins ) , microorganisms , fine metal wires can be turned on, the head can also be burned in the fire a burn , the organic carbonized , and then turned on. If it is a rigid material obstruction General to lead a very difficult problem , using the recoil approach can sometimes succeed. Can not be put on- line the same specifications of the tubes . If replaced with a new tube and then blocked , you should stop to check the above-mentioned several reasons causing obstruction . Operation, we need to protect the eyes and exposed skin , because the obstruction will be washed out at high speed . Is to turn around and pump tube erosion .

unified thread thread level , marking methods and limit size

unified thread thread level , marking methods and limit size
Rating: unified thread provides six different levels, namely 1A, 2A, 3A ( male ) and 1B, 2B, 3B level ( internal thread ) . Where the suffix A and B denote external and internal threads . 1A and 1B grade Hydraulic adapters thread is for weapons and some special requirements prescribed , which requires quick and easy assembly or threaded slight damage and stains can also be fitted occasions you can use this thread . 2A and 2B is a general purpose grade threaded bolts, screws , nuts and similar threaded fasteners of the most commonly used standard thread . Class 3A and 3B threaded for threaded fitting tightness and lead , half-width of the high precision of the occasion. 3A and 3B thread only with the accuracy level device , the effective measurement and detection means to get.

ferrule tube fitting assembly

( A ) pre-installed ① card preloaded ring couplings most important aspect 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 Hydraulic pipe fittings 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 , and this problem 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 the pipe should be flush 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 Hydraulic hose fittings 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 put on the card , 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 Mifengbuyan over the General Assembly .
( Five ) . Connecting pipe should be a good one , to avoid multiple disassemble , otherwise it will seal performance deteriorated.

Quick coupler ( ends retractable )

Quick coupler ( ends retractable )Tubes apart , self- sealing liquid in the pipe will not be lost , therefore suitable for frequent removal applications. Structure is more complex, Hydraulic tube fittings to greater losses . For oil and gas pipeline system for the medium , working pressure less than 31.5MPa, medium temperature -20 ~ 80 ℃Quick coupler ( both ends open ) for oil and gas pipeline system for the medium , the working pressure of the hose coupling medium temperature limited by

Three hose connector

Three hose connectorHose assembly without stripping the outer layer . Slightly different for hose diameter hose, the hose by fitting jacket on pre-compression to compensate. The pre-compression hose of 31 % to 50 % range to ensure no leakage at the operating pressure , will Hydraulic pipe fittings  not pull the rubber , the outer layer is not broken . With welded pipe fittings, quick couplers , sleeve type connection fittings used for oil , water, gas pipeline system for the medium , working pressure , medium temperature limit by connecting hose

withhold hose connector

withhold hose connectorEasy to install, but adds a tightening process . Damaged hoses , fittings coat can not Hydraulic tube fittings be reused , with steel braided hose supporting component assembly. With O-ring sealed with a welded pipe joint connection and usage . For oil , water, gas pipeline system for the medium . Medium temperature: Oil : -30 ~ 80 ℃; air , -30 ~ 50 ℃; water , 80 ℃ the following

cone seal welded pipe joints

cone seal welded pipe joints Over one end of the outer cone surface plus O-ring with the inner cone surface of the Hydraulic pipe fittings Hydraulic pipe fittings connector body to match , screwed tight. Working pressure up to 16 ~ 31.5MPa, operating temperature -25 ~ 80 ℃ for oil pipeline system for the medium

nsert Welded pipe joints

nsert Welded pipe jointsWill require the length of the tube into fitting until the pipe end in contact with the inner  Hydraulic ferrules end of tube fittings , tube and pipe joints will be welded into one , eliminating the need to take over , but require strict application of pipe size to oil, gas pipeline system for the medium

Flat welding flange

rough bore preformed gap exists, to send students decarburization or oxidation, therefore, should strictly control the exposure time. According to the exposure time for forging welded flange performance impact, and identify forging preform in the air before the transfer time. General For alloy welded flange, special or high-alloy steel flat welding flange preform, heat exposure time should not exceed five minutes. To reduce oxidation and decarburization tendency can also be sprayed on the preform glass, colloidal graphite lubricant or lubricant. Forged Flanges are generally closed die forging, forging sometimes there are burrs, so the high precision molds. Preform dimensional accuracy and weight must be strictly controlled in order to ensure Hydraulic ferrulesof flat welding flange forgings. Mold design should ensure that the module easy to replace worn. Under normal circumstances forging die life should be at least 5000-15000 pieces. Forging, the mold lubrication and preheating are two important factors. Sufficiently good lubrication, mold preheating temperatures are conducive to improve forging forgings overcome flat welding surface layer formation density, to ensure the quality of forgings, to improve die life, reduce the deformation resistance, which will help fill the mold cavity preform. Mold temperature begins to be preheated to 200-300 degrees, but too high will reduce the life of the die mold temperature, continuous forging production, the mold temperature should be controlled automatically. For example, by spraying lubricant or spray cold air to reduce the mold temperature. Generally flat welding flange forging lubricants are generally choose water-based suspensions or colloidal graphite graphite suspension in the mold and the preform surface coating. There are also water-soluble glass lubricant coating the mold surface or the surface of the preform. Flat welding flange forging process equipment requirements, strict than traditional forging punch displacement characteristics must preform with dense match the characteristics of the deformation. Billet and the mold contact time as short as possible. Forging machines have good rigidity, activities beams and pistons have a good guiding precision forgings to ensure accuracy. Therefore, the flat welding flange forging usually selected mechanical presses, such as the crankshaft presses, or high precision friction press.

Flat welding flange

To obtain a dense, high-performance flat welding flange forgings, forging temperature must be properly selected, the speed, the deformation force and other parameters. Initial deformation welding flange forging, since the porous preform deformation, the deformation force is small, the density increases rapidly. Forging late, because most of the pore is closed, deformation resistance increases, the need to eliminate the residual porosity increased rapidly deforming forces. Deformation resistance is closely related to the deformation temperature, the higher temperatures favor dense distortion and reduce the deformation resistance. Higher strain Hydraulic pipe fittings  welded flange dense. To this end, various factors must be taken into account impact on forging quality, selection of process parameters. For low alloy steel, usually forged 1125 degrees. But in the interval 850-900 ° also has a low flow stress. Flat welding flange forging cold forging can avoid high temperatures during grain coarsening, eliminating the need for normalizing treatment after forging. Help save energy, improve die life, but also can improve the performance of welded flange, heating before forging preform blank, you need to protect the atmosphere pressure. In order to prevent oxidation and decarburization, usually in an inert gas or hydrogen gas within the furnace Hydraulic hose fittings . In the flat welding flange forging production line under a protective atmosphere generally use high-frequency induction heating. Heating time, according to the degree of alloying material, the oxygen content and the size of the preform determined. Heat through heating time should prevail, namely flat welding flange rough materials inside and outside temperature uniformity. When you reach forging temperature and heating time, it should immediately be forged. Good heating before forging preform blanks in, always put in the air for some time, because of rough bore preformed gap exists, to send students decarburization or oxidation, therefore, should strictly control the exposure time. According to the exposure time for forging welded flange performance impact, and identify forging preform in the air before the transfer time. General For alloy welded flange, special or high-alloy steel flat welding flange preform, heat exposure time should not exceed five minutes. To reduce oxidation and decarburization tendency can also be sprayed on the preform glass, colloidal graphite lubricant or lubricant. Forged Flanges are generally closed die forging, forging sometimes there are burrs, so the high precision molds. Preform dimensional accuracy and weight must be strictly controlled in order to ensure the accuracy of flat welding flange

Hydraulic Flange

Pressure flange forging process, the main purpose is to gain size, shape drawing in full compliance with the requirements of a qualified wrought products. Hydraulic flanges forming two basic conditions, one during the deformation process can withstand the hydraulic flange round the amount of deformation required to not destroy the external structure, and second power condition that part of the equipment through a die to apply sufficient and the particular distribution of the force. Through the efforts of manufacturing conditions, optimizing the production process, the production of qualified workers forging wrought products is an important task. Hydraulic forging process selection is flexible flange, the flange forming a hydraulic step, the same kind of forged parts can be produced by different devices or different production method to complete. For example if the link on forging hammer smithy, the rough material in the same mold chamber to complete pre-forging, the final forging, stretching, rolling. Should the pressure of hydraulic forging machine, you need to use the pre-rolled forging blank. If you are using forming roll forging methods to produce, you can then add a precision roll forging shaping step and get qualified hydraulic flanges. Another example is the multi-station cold forging step shaft, forged for the same product can have different processing techniques, the use of different Hydraulic tube fittingsflange blank, the corresponding intermediate steps are not the same, and some contain forward extrusion, some with side squeeze . The deformation stress required size is different, the service life of the mold is also a great diffe Preparatory work before forging steel including the original choice of materials and count, cutting, preheating, deformation stress calculation, select production equipment, tooling design. Before forging also need to choose a good quality lubricant and lubrication method.Hydraulic pipe fittingsflange forging material involves a wide variety of grades of both round and high-temperature alloy steel; established after a processed into bars of different sizes and shapes, there are a variety of specifications ingot; besides extensive use of a suitable material of the outer circle of domestic resources, but also from foreign steel. Most of the forging material has been included in the national standard library, there are many is to develop, trial and promotion of new material. As we all know, hydraulic flange quality is often closely associated with the quality of raw materials, so the forging worker, must have the necessary knowledge of raw materials, production process according to claim to be good at selecting the most suitable material.
        

welded flange

Welded flange forming process is very complex, especially for large welded flange production cost is great, often need to warm up beforehand. Computer simulation of deformation of the flange is related to the process of raw materials and deformation temperature and the mechanical properties of a mathematical model representation, by means of computer simulation at any instant during deformation and stress-strain state temperature distribution. Process using computer simulation and physical simulation, the two can be mutually supporting and complementary. As Hydraulic tube fittings forming process and the physical existence of geometric nonlinear nonlinear problems, so that the main stress method, slip line method and the upper bound method and other traditional methods in the analysis of the type of problem and the practical application of aspects there are significant limitations sex. The finite element method so that the physical characteristics of the plastic deformation process to get real inclusion, to comprehensively consider various boundary value, initial conditions, and for complex boundary with high fitting accuracy, thus becoming the metal forming process Numerical Simulation of the mainstream approach

Hydraulic hose assembly

Hydraulic hose assemblyonstruction machinery hydraulic hose hose die molding method by using it or not, can be divided into a core method (also includes soft-core and hard-core law Law), no core method. There is a hose core method in the hard-core or soft core shape, no core method is the skeleton layer and the outer layer extruded directly molded on the inner hose. In order to ensure the hose in the curing process in compression, after forming a water hose cloth (width about 10cm soaking wet volume), lead rope or a package, and then vulcanized. Direct steam autoclave curing can be heated or continuous vulcanization. Short staple fiber hose is added directly to the rubber compound, and then extrusion molding, its production process is simple, it will gradually replace the hose and knitted fabric hose. Hydraulic hose fittings hose assembly / construction machinery hydraulic hose Hose modern production technology and tend to be highly automated continuous production. Thermoplastic rubber or plastics vulcanizing step can be omitted, greatly simplifying the production process.

Hydraulic hose assembly

Hydraulic hose assembly / construction machinery hydraulic hose hydraulic hose assemblies for the transfer of gas, liquid, paste or granular material of a class of tubular rubber products. The external layer and the skeleton layer, the skeleton layer material can be cotton fibers, various synthetic fibers, carbon fibers or asbestos, steel wire. General construction machinery Hydraulic pipe fittingshose assembly hose inside and outside layer material made of natural rubber, styrene or butadiene rubber; Oil hose with neoprene rubber, nitrile rubber; acid, high temperature hose with EPDM, Viton or silicone rubber.

high pressure hose assembly causes of damage

the outer plastic airtight poor lead wire corrosion.leaving the inner rubber seal differential pressure oil easily into the layer of wireslayer with steel wire layer adhesion is insufficient.Second, blind production, did not press for further environmental Hydraulic hose fittings requirements, high pressure hose performance of less than a specific environment or technical requirements. This aspect is rare, but as long as mentioned, it is necessary to attract attention.Third, matching withhold joints quality problems:
withhold joints Hydraulic ferrules. withhold joints mainly the process designdo not withhold respect bit, such as withholding amount is not enough.high-pressure hose assembly not installed, do not install correctly.Six high-pressure hose assembly which must be kept clean and, if foreign matter (dust) into the pump or valve, the impact of other equipment to work properly, and thus indirectly affect the high-pressure hose assembly.

high pressure hose assembly causes of damage

First, the production quality aspects:1, high pressure hose did not reach the vulcanization vulcanization, manifestations is owed sulfur or sulfur too. Due to the above two reasons mainly the result of its various attributes function, resulting in the use of process problems.the plastic wall of uneven thickness, especially the inner layer the greatest impact. steel wire braided or winding process Hydraulic pipe fittingsHydraulic pipe fittingsto the design process, braiding angle did not reach 54 degrees 44 minutes, steel wire braided too tight or too loose, the process of using high pressure hose (pressurized) deformation (elongation, shortening or bending deformation volume) bigger.

high-pressure hose assembly Precautions

Fifth: the layout of the form should be based on the hydraulic system, a reasonable selection of fitting manner, the joint angles, as well as hose assembly mounting angle Sixth: To choose the right hose length, hose is too long, it will increase the Hydraulic tube fittings; hose is too short, when it is caused by pressure and stretch or shrink when there is not enough margin expansion will cause damage to the hose exception Finally, the hose in the assembly process, but also need to pay attention to the following questions: hose assembly, do not let it twist, otherwise it will significantly reduce the hose life, even cause damage to the hose or cause abnormal joints loose; devices in between the moving parts hose, should be set aside sufficient length, and to prevent friction and other objects; frequently if the hose in the use phase friction with hard objects, it is recommended to install a spring jacket tube.

high-pressure hose assembly Precautions

 Second, according to the system pressure, determine the maximum working pressure hose. Each model of high pressure hose has a maximum working pressure (hose burst pressure of 3-4 times the maximum working pressure), so the system should be based on the actual pressure, the peer choose the maximum working pressure of the hose, so that you can ensure normal system operation, but also save procurement costs. If the system impact pressure frequently, you should use a higher pulse life hose,Hydraulic tube fittings an appropriate increase in the maximum working pressure of Third, according to the flow selector hose diameter, tube diameter is too small will increase the flow rate of the medium, the system heat, reduce efficiency, and will produce excessive pressure drop, affecting the overall system performance, the diameter over the General Assembly to increase procurement costs and affect the normal operation of the system, so the hose diameter to be appropriate. When the hose pipe or hose clamp through a fixed size space, they should also pay attention to choose the outside diamete Hydraulic adapters of high-pressure hose high pressure hose should pay attention to the bending radius, bending radius should be calculated by subtracting the length of the front connector crimping. If the device hose bend radius is too small, will reduce the ability of the pressure hose and reduce its service life.

high-pressure hose assembly Precautions

Depending on the device working conditions (temperature) and the hydraulic medium situation, choose the right type of hose. High pressure hose working environment temperature is too high or too low will affect the life of the hose and pressure capability, which allows it to be used within a temperature range of high-pressure hose, long-term working temperature exceeds the allowable temperature range, Hydraulic hose fittings a special hose or installation of special sheath. High pressure hose suitable working temperature: steel braided high pressure hose -40 ℃ - +100 ℃, wire spiral pressure hose -40 ℃ - +120 ℃, working conditions or higher than this temperature range, special delivery, please choose the appropriate media special hose. If special media, make sure the hose inner and outer, fittings, and seals compatible with the media.

Selection of high-pressure hose assembly

Hose sheathing installed in the main hydraulic hose, wire, cable and other products outside. Its function is reinforced hydraulic hose, wire, cable and other interior products, wear-resistant, antistatic properties, in a variety of harsh environments such as inside of the hydraulic hose products play a security role. Hydraulic hose, wire, Hydraulic pipe fittings installation screw protective cover not only improve the aesthetics, but also can extend the life of the product inside. Retaining spring with traditional metal products, rubber Hydraulic hose fittings to install and better wear resistance; anti-aging, corrosion resistance strong; more powerful hydraulic hoses, wires, cables and other products for anti-aging and anti-surface friction protection; has more excellent, more convenient, more environmentally friendly energy-saving effect.Our company can according to customer requirements for a variety of customized jacket.

used high pressure hose hose assembly

One, one, two wire braided hoseHigh pressure hydraulic system, suitable for mineral oil hydraulic oil, glycol oil and water Hydraulic pipe fittings.
Temperature range: -40 ℃ ~ +100 ℃Two, four wire winding hoseHigh-pressure hydraulic systems, suitable for mineral oil hydraulic fluids, glycol hydraulic fluid and oil emulsion, suitable for high pressure and large flow systems.
Temperature range: -40 ℃ ~ +100 ℃Three, six wire spiral pressure hose
High pressure hydraulic systems, suitable for mineral oil hydraulic fluids, glycol hydraulic fluid and oil-water emulsion. Temperature range: -40 ℃ ~ +100 ℃

Hydraulic pipe fittings Features

Hydraulic pipe fittings is a fluid power and general use of the pipeline system necessary connections. In a hydraulic system, energy from the hydraulic oil through the hydraulic connections and that the tube hose system for delivery. If you put a hydraulic pump compared to a person's heart, then that is hydraulically connected vessels; modern industry requires increasingly higher hydraulic system operating pressure. High-speed operation of the hydraulic system of hydraulic equipment requirements to withstand high voltage pulse, requires hydraulic pipe fittings in the system must withstand higher peak pressure and vibration energy to guarantee the normal transport. Its failure will cause the pipeline leak, a serious cause of pipeline rupture. The first oil pipeline environmental laws and regulations is not allowed. More importantly, the modern large-scale mechanized production equipment shall Hydraulic hose fittings Hydraulic hose fittings in order to ensure production efficiency, basically does not allow non-normal downtime; General hydraulic oil for hydraulic pipe fittings is not corrosive, so common carbon steel hydraulic systems hydraulic pipe fittings, water or purified water should not be used to connect pipes carbon steel hydraulic fittings. Previously compressed using brass hydraulic fittings, because the compressed air carries moisture build-up inside the tube if carbon steel hydraulic fittings will corrode. Chemical equipment, piping conveying a variety of corrosive fluids usually requires frequent washing with solvent or water, so the general chemical piping must be stainless steel Hydraulic ferrules Hydraulic ferrules fittings. Hydraulic pipe fittings in hydraulic systems have different functions: the high pressure, low pressure return line and suction line. Accompanied by high pressure pipeline strong impact and high turbulence, to ensure the seal in this condition. Suction line liquid flow rate is low, in order to ensure the pumps are not subject to cavitation damage, you must select the appropriate hydraulic pipe fittings, ensuring withstand the vacuum pipe and to minimize pressure loss. Select to know when hydraulic pipe fittings nominal pressure hydraulic pipe fittings.

Stamping elbow technical process

Stamping elbow to connect fittings, mainly in the field of development of this product can take a leading role, with the world-class level of technology and sail.Stamping Hydraulic ferrules Hydraulic ferrules fittings, mainly in the field of development of this product can take a leading role, with the world-class level of technology and sail. Stamping process elbow pipe with a certain process, in the production process according to certain production techniques:1, dual card single compression pressure ratio of 1.8 times the tensile strength is more applicable to high-level, high-pressure building.2, double compression tube fittings inserted without cuts apron.3, for use in stainless steel pipe system, double compression type fittings dimensional accuracy, allowing the pipe error increases, fit stronger.4, dual sim pressure sealed in stainless steel apron, the apron significantly Hydraulic adapters Hydraulic adapters and dual compression ring by squeezing around evenly, not from the side-fold pressure seal extrusion pressure to make up a single card applicable process deficiencies.5, double compression joints, pipe bending deformation by external forces will not have an impact on seals, stamping elbow pipe-in card technology performance, technical specifications, technical level of upgrade

Welding elbow pre-installation checks

 A welding elbow installation, pipe section should be measured by the root, number, should use the smallest diameter tube section groups differ on the b2, in the face of stitching piping should Hydraulic pipe fittings Hydraulic pipe fittingstube 14CM * 14CM sleeper pad level, should not be used iron pipe, and to minimize tube rolling to avoid damage to the pipeline external co 3, check the pipe section down tube should be preceded by internal and external anti-corrosion layer, after passing the down tube. 4, consisting of pipe pipe section down tube, the tube length of the segment, hanging from, should be based on pipe diameter, wall thickness, outer coating of the material type and method to determine the down tube. Slings should be used vigorously rope or wire hose sets and other soft materials, in order to avoid bad steel outer coating.5, the distance to the Hydraulic adapters Hydraulic adapters is not less than diameter, and not less than 100MM.6, the tube section welding using welding rod should be consistent with the design and specification.7, cleaned the dirt inside the tube and nozzle clean edges and polished on both sides of the weld, it  exposed metallic luster, making groove.

Stamping elbow technology

Stamping elbow to connect fittings, mainly in the field of development of this product can take a leading role, with the world-class level of technology and sail. Stamping process elbow pipe with a certain process, in the production process according to certain production techniques:
1, dual card single compression pressure ratio of 1.8 times the tensile strength is more applicable to high-level, high-pressure building.
2, double compression tube  Hydraulic hose fittings without cuts apron.
3, for use in stainless steel pipe system, double compression type fittings dimensional accuracy, allowing the pipe error increases, fit stronger.
4, dual sim pressure Hydraulic tube fittings Hydraulic tube fittings steel apron, the apron significantly improved durability and dual compression ring by squeezing around evenly, not from the side-fold pressure seal extrusion pressure to make up a single card applicable process deficiencies.
5, double compression joints, pipe bending deformation by external forces will not have an impact on seals, stamping elbow pipe-in card technology performance, technical specifications, technical level of upgrade

Marine flange Introduction

Marine flange is a detachable connection. According to the connected components can be divided into the vessel flange and pipe flange.Marine flange is a detachable connection. According to the connected components can be divided into the vessel flange and pipe flange. For vessel flange, by structure type, with integral flange, loose flanges and threaded flanges. Common integral flange welded flange and welded flange.Jic hydraulic fittings Jic hydraulic fittings welded flange for pressure p ≤ 4MPa occasions; butt Marine flange also known as high neck flange, greater rigidity, suitable for high pressure and temperature of the occasion. The tube and pipe flanges are interconnected parts. Connected to the pipe end. There areHydraulic pipe fittings Hydraulic pipe fittings, can be worn bolts, so that the two flange abuts. Sealing gaskets between flanges. That the two flanged pipes, fittings or equipment, each fixed in a first flange, between two flanges, with flange gasket, fastened together with bolts, to complete the connection. Some fittings and equipment already comes with flange, also belongs to flange connection

Marine flange Introduction

Marine flange is a detachable connection. According to the connected components can be divided into the vessel Hydraulic tube fittings Hydraulic tube fittings flange.Marine flange is a detachable connection. According to the connected components can be divided into the vessel flange and pipe flange. For vessel flange, by structure type, with integral flange, loose flanges and threaded flanges. Common integral flange welded flange and welded flange. Less rigid welded flange for pressure p ≤ 4MPa occasions; butt Marine flange also known as high neck flange, Hydraulic pipe fittings Hydraulic pipe fittings, suitable for high pressure and temperature of the occasion. The tube and pipe flanges are interconnected parts. Connected to the pipe end. There are holes on the flange, can be worn bolts, so that the two flange abuts. Sealing gaskets between flanges. That the two flanged pipes, fittings or equipment, each fixed in a first flange, between two flanges, with flange gasket, fastened together with bolts, to complete the connection. Some fittings and equipment already comes with flange, also belongs to flange connection

Marine flange inside two common

Marine welding flange: the tube is inserted into the inner flange welded flanges, welded flange into flat welding flange with neck and lap welding plate flange two kinds. Flat welding Hydraulic tube fittings Hydraulic tube fittingsadvantages of simplicity, low production costs, but not high temperature high pressure, mainly used for pressures below 2.5 MPa at room temperature piping, the ship uses the most flanges.Marine welded flange:Hydraulic pipe fittingsHydraulic pipe fittings as high-neck flange, with neck refers to the transition of a pipe and the pipe flange welded connection. Greater rigidity easily deformed welded flange, sealed, widely used for high pressure and temperature of the occasion, nominal pressure PN at 16MPa or so. Mainly used for compressed air piping, piping carbon dioxide.

Hydraulic hose fittings dimensions

Distance to the edge at the hexagon 71mm, diagonal 80mm, height of about 34mm; exposed fitting connected thereto a small cut, measured obtaining an outer diameter of 57mm; these parameters can be seen through the fitting thread size is how much? Or see the hose specifications have becomeTo pick one thing on this, the amount of temporary and Jic hydraulic fittings Jic hydraulic fittings, said the appearance of size can be checked through the standard, I do not know which standard the investigation, hoses and fittings are a lot of standards, I'm not up to which this belongs types. . . Come on experts to explain, this is called what, check what criteria, how to check, through the above parameters can get out what size and so on, very grateful! !

Stainless steel hose fittings

Termination stainless steel hose fittings using standard stainless steel casting, stainless steel hose Hydraulic ferrules Hydraulic ferrules compact, non-porous, high strength stainless steel hose connected with reliable, aesthetically pleasing appearance.

T-connector Structure and Characteristics

T-shaped tee metal hose connectors, connector at one end thin steel wire tube, the other ends of the metal connector metal hose;Metal joints made ​​of zinc alloy die-casting, zinc plated, Hydraulic tube fittings Hydraulic tube fittings, compact, non-porous, high strength. Reliable connection with metal hose, aesthetic appearance;Metal hose adapter: JS type, JSH type, JSB type, JSHG type, complete specifications;Can be customized non-standard metal hose joints and special metal joints.

Y-shaped connector

Structure and Characteristics:Y-shaped tee metal hose connectors, one end of the connector thin steel wire tube, the other ends of the metal connector metal hose:
Metal joints made ​​of zinc alloy die-casting, zinc plated, brushed, or chrome; compact, non-porous, high strength. Hydraulic hose fittingsHydraulic hose fittings with metal hose, aesthetic appearance;Metal hose adapter: JS type, JSH type, JSB type, JSHG type, complete specifications;Can be customized non-standard metal hose joints and special metal joints. , Compact structure,

Ningbo Yinzhou Liujin Hydraulic Equipment Factory

Our factory aims are strict management style, high-quality, honestly and faithly style ,sincerely services. It implements the pipe-cutting, rubber-stripping, hose crimping, trail-pressure, rinsing in aspect of the manufacture technology . Our products have the features of the consummate structure, advanced design.Theelbow joint adopts the integral production craft and technology and chooses the advanced high frequency heater and fully automatic computer pipe bender for the processing .It conforms with the requirements of pleasing appearance, fine pragmatism and low price . And our products exported to some mid-eastern nations and some European countries such as USA, Greece, British ,etc.The factory is located on Hengxi industrial estate, Yinzhou, Ningbo, China. There is the cradleland of hydraulic pipes and has transport facilities, enough supply of goods.All staff members of this factory warmly welcome broad old and new consumers in all walks of life come to visit us and negotiate business with us .We are willing to wholeheartedly serve you by the superior products and preferential price. We wish we can sincerely cooperate with each other for the purpose of jointly creating afine future.