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introduction：NSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]The raceways of the inner and outer rings are circular-shaped channels，The channel radius is slightly larger than the sphere radius，Mainly used to bear load，It can also withstand a certain axial direction
2014-12-19 Reading quantity 1554
introduction： How to solve the failure of electric forklift truck 1、The main reasons for vibration during lifting are：There is air in the lifting cylinder，Hydraulic system leakage，Internal gantryFork size roller and bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Excessive wear，two
2014-12-19 Reading quantity 3008
introduction：The purpose of the relief valve Constant pressure overflow action：In a metering pump throttling control system，Quantitative pumps provide a constant flow rate。When the system pressure increases，The traffic demand will be reduced。At this point the relief valve opens，Overflow excess flow back into the tank，Ensure the relief valve inlet pressure，That is, the pump outlet pressure is constant（The valve port usually opens with pressure fluctuation）。 Safety protection function：When the system is working normally，Valve closing。Only the load exceeds the specified limit（System pressure exceeds set pressure）When the overflow is opened，Overload protection，So that the system pressure does not increase（Usually overflow
2014-12-19 Reading quantity 3003
introduction：Hydraulic drive：It uses hydraulic oil as the working medium，Through power element(Oil pump)The mechanical energy of the prime mover is changed into the pressure energy of the hydraulic oil，Then through the control element，And then with the help of an executive element(Oil cylinder or oil motor)Convert pressure energy into mechanical energy，Drive the load to achieve linear or rotational motion，And through the remote control of the control element and the adjustment of the flow，Set the force and speed of the actuator。When there is an external disturbance to the system，The output of the executing element generally deviates from the original setting value，Produce a certain error Hydraulic control：Same as hydraulic transmission，Power components are also included in the system、Control element and executive element
2014-12-19 Reading quantity 2894
introduction： The purpose of quenching is to strengthen steel parts,Give full play to the potential of steel properties. Such as:Improve the mechanical properties of steel parts,hardness、Abrasion resistance、Elastic limit、Fatigue strength， Improve the physical or chemical properties of some special steels，Such as enhancing the ferromagnetism of magnetic steel，Improve the corrosion resistance of stainless steel。 The main purpose of quenching and annealing 1、Purpose of quenching：Change the material from ferrite to austenite，The martensite was obtained by the unbalanced phase transition after rapid cooling，High hardness and strength are obtained 2、Purpose of annealing：Change the material from ferrite to austenite，Ferrite is formed slowly but then in an equilibrium phase，
2014-12-19 Reading quantity 1560
introduction：KOYOImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]In the course of its use, it shows strong regularity，And repeatability is very good。Normal quality bearing(KOYOImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。])on
2014-12-19 Reading quantity 1646
introduction：INAbearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]The metallurgical quality of the material used to be affected by rolling bearings[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，
2014-12-19 Reading quantity 1642
introduction：INAbearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Although the quality and other aspects are better，But rolling bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft
2014-12-19 Reading quantity 1619
introduction：Stainless steel workpiece after pickling and water washing，Available to contain10％(Mass fraction)NaOH+4％(Mass fraction)KMnO4Base of1Raw permanganate solution in71～82℃Medium soaking5～60min，To remove pickling residue，Then rinse thoroughly with water，And dry。After pickling and passivation, the surface of stainless steel is spotted or stained，It can be removed by scrubbing with fresh passivation solution or high concentration nitric acid。Final pickling passivated stainless steel equipment or components should be protected，Can be covered or bandaged with polyethylene film，Avoid contact between non-metallic and non-metallic metals。 Treatment of acid and passivation waste fluids，Conforming country
2014-12-19 Reading quantity 1612
introduction：Principle of induction heating：The induction belt seat can be placed on the outer spherical bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Heater compared to transformer，It works by placing a primary coil with more turns and a secondary coil with fewer turns on the same iron core。The voltage ratio of the input to the output is equal to the ratio of the number of turns of the coil，While the energy stays no
2014-12-19 Reading quantity 1647
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