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introduction：XRadiographic analysis X-ray analysis Engineering steel structural steel Engineering plastics engineering plastics Stainless steel stainless steel Machinability test test for machinability Malleable cast iron malleable cast iron Cubic boron nitride cubic boron nitride Optical metallographic examination optical metallo
2015-01-04 Reading quantity 2913
introduction： Soft fillet is very similar to face fillet，The difference lies in： ●face BlendTangential strings can only be defined on one suite of planes，whilesonegativeBleRdIn two adjacent groups Tangential string is required on all surfaces(A tangential string can be a curve or an edge，But you cant mix the two)。 ●The soft fillet and its adjacent surface can be used in two smooth transition methods: tangent continuous or curvature continuous。 ●Soft fillet must use spine line。 ●Since the soft Angle is on the adjacent two suites, the tangential string must be defined
2015-01-04 Reading quantity 2916
introduction：By China Aerospace Science and Technology Corporation510Institute engineer Han Xiaojing invented it“Piston for extended engine life”，Recently passed the State Intellectual Property Office technology patent certification。This technology can effectively reduce the energy consumption of automotive engines due to piston friction，Increase the useful work output of the engine，Thereby improving the dynamic performance of the engine，Extend its service life。 The piston is the energy conversion component of the engine“heart”，Under great mechanical and thermal load，In high speed reciprocating motion，The failure of lubricating oil to reach piston skirt is the core problem of engine failure，Become an influence
2015-01-04 Reading quantity 2815
introduction：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。]It is an indispensable part of the machine，Right nowSKFImported 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，And certainly not the price
2015-01-04 Reading quantity 1468
introduction：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。]Installation of、Disassembly method，Should be based on the bearing structure、Size and fit with bearing components depends。Install、The removal pressure should be directly applied to the end face of the tight fitting stop ring，The pressure cannot be transferred through the rolling element，Because this will cause indentation on the bearing working surface，Influence bearing alignment
2015-01-04 Reading quantity 1409
introduction：1)Butt 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。]Matching surface requirements Bearing mounting site on shaft and seat hole，The lower the surface roughness，The better the shape and position accuracy，The stiffness of the support obtained is also higher。 The surface was subjected to surface strengthening treatment，Increase rigidity。Use high hardness plugs with low roughness，In unity
2015-01-04 Reading quantity 1581
introduction： The assembly site should be kept as clean as possible，dust-free；Avoid eccentric 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，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]dusty、Pollutants and moisture（Pollutants have adverse effects on the running and service life of rolling bearings）； Check the mating surface on the bearing seat hole and shaft
2015-01-04 Reading quantity 1535
introduction：1、High printing speed、High overprint accuracy Paper preprinting gravure press printing speed up to150meter／minutes，The overprint accuracy is less than0．2millimeter。 2、Large print format Paper preprinting gravure press printing format can be from1000× 600to1700×1700millimeter。 3、printing、Oiling is done in one go Paper preprinting intaglio press can be achieved4— 12Color ink printing and polishing is done in one go。In order to reduce the cost of plate making，The oiling unit is driven by a separate motor，It is not necessary to change the oiled plate roller when replacing the printing plate roller。 4、
2015-01-04 Reading quantity 2895
introduction：In grinding process，Grinding wheel and workpiece contact zone，Consumes a lot of energy，Generate a lot of grinding heat，Resulting in local transient high temperature in the grinding zone。The theoretical formula of heat transfer from linear moving heat source is used、The instantaneous temperature under experimental conditions is calculated or measured by infrared and thermocouple methods，Can be found in0.1～0.001msThe instantaneous temperature in the inner grinding zone can be as high as1000～1500℃。This instantaneous heat，It is sufficient to produce high temperature oxidation of the surface layer at a certain depth of the working surface，Amorphous structure、High temperature tempering、Secondary quenching，Even burns and cracks and other changes。 （1）Surface oxide layer instantaneous
2015-01-04 Reading quantity 1480
introduction：rollKOYOBearings are precision components，Be careful when using。No matter how high performance you useKOYObearing，If used improperly，Will not get the expected high performance。Here are some 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，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]The use of precautions。 one、holdKOYOBearing and its surrounding environment
2015-01-04 Reading quantity 1570
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