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introduction：Bearings for rolling[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。]Have the performance，It can maintain long-term use under good conditions，Must match 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
2014-12-22 Reading quantity 1617
introduction：The surface of the coated tool should be a bright polished surface，There shall be no rust spots on each working surface of the tool、burnishing、oxidation、Breakage and other defects，There must be no burrs on the cutting edge。before、The surface roughness of the back tool surface should reachRa<0.8~1.25μm。The smaller the surface roughness value is，The better the binding degree of the coating。In addition，The cleaning quality of the tool surface is also very important。 Tool base material The base material of the coating tool and the coating material should be reasonably matched，Must be selected according to different processing requirements。Substrate for coating high speed steel tools，availableW6Mo5Cr4V2(M2)Universal type high speed steel，
2014-12-22 Reading quantity 2893
introduction： What is grease? Grease is a stable solid or semi-solid product composed of thickening agents dispersed in liquid lubricants,Additives and fillers designed to improve certain characteristics of the grease may be added。The grease can be attached to the vertical surface without loss at normal temperature,And can work in open or poorly sealed friction parts,With other lubricants can not replace the holding point。therefore,Grease is used as a lubricating material in many parts of automobiles and construction machinery。 Types of commonly used greases 1.Calcium base grease This is the grease commonly known as butter。At the current car repair shop
2014-12-22 Reading quantity 1558
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。]Lubrication in principle with other 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，Bring down
2014-12-22 Reading quantity 1662
introduction：Development history of heat treatment （1）Cleaning heat treatment Waste water from heat treatment production、Exhaust gas、Waste salt、dust、Noise and electromagnetic radiation will cause pollution to the environment。Solve the environmental pollution problem of heat treatment，Perform clean heat treatment（Or green heat treatment）It is one of the directions of the development of heat treatment technology in developed countries。To reduceSO2、CO、CO2、Dust and cinder discharge，The use of coal as fuel has been virtually eliminated，Less heavy oil is being used，Most have switched to light oil，Natural gas remains the most desirable fuel。 The waste heat utilization of combustion furnace has reached a high degree，Excellent burner structure
2014-12-22 Reading quantity 1629
introduction：The hardness of the heat treatment workpiece is tested by a hardness tester。PHRSeries portable surface Rockwell hardness tester is suitable for testing the hardness of surface heat treated workpieces，Can test the effective depth over0.1mmVarious surface heat treatment workpieces。Simple operation、Easy to use、Lower price，Hardness values can be read directly。 Surface heat treatment is divided into two main categories，One is surface quenching and tempering heat treatment，The other is chemical heat treatment，The hardness test method is as follows：Chemical heat treatment is the infiltration of atoms of one or more chemical elements into the surface of the workpiece，Thus changing the chemical composition of the workpiece surface、Structure and properties。After quenching and low temperature
2014-12-22 Reading quantity 1640
introduction：TIMKENbearing[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 structural characteristics and working conditions are requiredTIMKENbearing[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 are produced on the shaft
2014-12-22 Reading quantity 1570
introduction： Railway vehicles can be roughly divided into car bodies、bogie、Connect the buffer device and other parts。A bogie is the running part of a railway vehicle，Its role is to bear the weight of the upper body of the car，Transfer traction and braking force，Soften the impact of the line on vehicles。Bogies generally include wheelset axle box devices、Elastic suspension、Frame and side frame、Foundation brake、Car body support device and other parts（As shown in the figure1）。At present，The main bogies of railway freight cars in China are rotating8AType B bogie，include：bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is fixed in the mechanical transmission process
2014-12-22 Reading quantity 2999
introduction： Short shaft at normal operating temperature（spanL<400mm），The fulcrum is usually fixed in a one-way way at both ends，Per 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。]Axial force in one direction。To allow the shaft to operate with a small amount of thermal expansion，bearing[bearing:bearing（“Bearing”，Japanese
2014-12-22 Reading quantity 1633
introduction： UGThe right-click popup menu contains some of our commonly used functions，For exampleRoate、FitEtc.，In order to use more convenient，We can build our own！unpackUGIn the installation directoryUGIIinferiormenusfile，It contains some*.menand*.tbr，We open it as text，The findings are not hard to understand。Such as，We want to right-click inside the pop-up menuroateandpanAdd between as illustratedviewinferiororientFeature，First, lets open it.ug_main.men,Look uporient，Will see
2014-12-22 Reading quantity 3026
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