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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。]In the process of use due to its own quality and external conditions，Its carrying capacity、Rotation accuracy and wear resistance will change.When the performance index of the outer spherical bearing is lower than the use requirements and can not work normally，The bearings fail or even fail，In case of bearing failure
2015-01-11 Reading quantity 1549
introduction：Peel off Damage state:SKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing]When rotating under load，Inner ring、The raceway surface or rolling surface of the outer ring shows a fishscale peeling phenomenon due to rolling fatigue。 reason:Excessive load。Poor installation（nonlinearity）Moment of force
2015-01-11 Reading quantity 1549
introduction：1．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。]The geometric dimensions and structural characteristics of the system； 2．Energy loss during metal deformation（Convert to heat，The same hereinafter）； 3.The microscopic sliding friction energy loss in the contact patch； 4.Energy loss from rolling blocks（If the outer ring surface is rough，There is dust and sand），Out of line with the runway，Apparent not
2015-01-11 Reading quantity 1578
introduction：The latest research shows，Lead-free welding can be very fragile，In particular, premature interface failure is easy to occur under impact load，Or often weakened by moderate aging。The mechanism of embrittlement will of course vary depending on the surface treatment of the pad，However, none of the common pad coatings seem to be consistently immune to the embrittlement process，This is for products that endure relatively high operating temperatures and mechanical shocks or violent vibrations for a long time，Is very worthy of attention。 Due to the common weldable surface coating is associated with the risk of embrittlement，So the electronics industry is facing some very difficult problems right now。however，These embrittlement mechanisms
2015-01-11 Reading quantity 2903
introduction：KOYOBearing at slightly negative operating clearance，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。]Maximum life。But it is actually very difficult to keep the bearings in this optimum state once certain conditions of use change，The negative clearance increases，Resulting in a significant decline in the life of the outer spherical bearing or heat。therefore，Initial clearance is usually chosen
2015-01-11 Reading quantity 1576
introduction： content 1、The basic concept of plastics 2、Molding and processing properties of hot plastics 3、Design principles of hot plastic products 4、Injection molding Overview 5、Basic structure and classification of injection molding die 6、Cavity parting surface and pouring system（one） 7、Cavity parting surface and pouring system（two） 8、Design of injection molding mold parts（one） 9、Design of injection molding mold parts（two） 10、Design of injection molding mold parts（three） 11、Design of injection molding mold 12、Plastic mold design step
2015-01-11 Reading quantity 2833
introduction：1、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。]Vibration of Bearing vibration is very sensitive to bearing damage，exfoliation、impression、corrosion、crack、Wear and tear will be reflected in the bearing vibration measurement，therefore，By using a special bearing vibration gauge(Frequency analyzer)The magnitude of the vibration can be measured，Transit frequency
2015-01-11 Reading quantity 1502
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。]Temperature rise，First, see if there are any wrong actions，If the temperature is indeed rising，The following actions should be taken immediately： (1)Check cooling water pressure，Water flow and piping system is normalFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And with
2015-01-11 Reading quantity 1579
introduction： A car for transporting goods﹐Most of them have a separate cab and a cargo box adapted to the requirements of the cargo transported(The cab and trunk of a minivan are often integrated)﹐Truck for short。 type Trucks are divided into road trucks and off-road trucks。The main parameters of the truck are the loading capacity and the total weight。Most countries divide road trucks into several tax brackets according to their total weight。Chinas classification method is﹕All up weight15Heavy goods vehicles with tons or more﹐6～15The tonnage is a medium truck﹐6Goods under the ton are light trucks。The total weight of the heaviest road truck is32Tons of﹐The maximum load of a single axis is13Tons of。If uniaxial
2015-01-11 Reading quantity 2882
introduction： Porsche moves into compactSUVThe market dropped an important one。7month12day，legendary“Petit Cayenne”——Brand newPorsche MacanLand in Hangzhou。As a true Porsche sports car，Excellent sports genes in brand newMacanEvery detail is perfectly reflected。 Design aspect，Many classic elements from other top Porsche sports cars give it a sporty, elegant and dynamic image。meanwhile，Brand newMacanThe interior also provides flexibility and a sense of space。 This send
2015-01-11 Reading quantity 2904
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