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According to rollIKOBearing type is different，Ruijing Electromechanical will be divided into the following aspects： one、Centripetal ball 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。] 1、The inner and outer ring raceway spalling，Heavy wear，Cracks in the inner and outer rings。 2、Ball out of round or peeling surface，Have a crack。 3、
In a dispersion where the fixed powder coexists with the liquid and is predominantly solid，Utilize dispersed self-bonding properties（Or add a binder），By force（Like agent pressure、gravity、Centrifugal force、Mechanical force、Air impulse, etc）The basic particles of solid powder are bonded to each other、magnify，And form a certain shape and uniform particle size，A concentrated group of particles。 The wet process plant is mainly composed of mixing（kneading）、prilling、Drying and its auxiliary system equipment。The powder is mixed
first、What are the requirements for the installation surface and installation site？ 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。]No impurities can enter the inside，ifTIMKENbearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is used to fix and reduce load friction during mechanical transmission
one、Correct installation precision JapanNSKbearing[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。] Precision Japanese for installationNSKbearing[NSKbearing:Japan
Both sides of the blade with tight sleeve 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。]Seat fit。Free-end bearing occurs on retest[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 the other parts are on the shaft each other
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。]If well lubricated，And correctly block debris and moisture,Indicates that the oil seal should not be worn.however,It is best to open the bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is used to fix and reduce load friction during mechanical transmission
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。]After installation，To check that the installation is correct，An operational check is required。Small machines can be turned by hand，To make sure the rotation is smooth。Check items for foreign bodies、scar、Poor operation due to indentation，Due to poor installation，The torque caused by poor machining of the mounting seat is unstable
1、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，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]structure：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，To reduce power transmission
KOYOThe main reason of bearing fracture failure is defect and overload。When the applied load exceeds the strength limit of the material, the fracture of the part is called overload fracture。The main cause of overload is the sudden failure of the host or improper installation。Stainless steel 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。]Microcracks in parts、Shrinkage cavity、bubble、Bulk foreign debris
41：What are the three tail flowers in spark identification？ a：diplococcygium、Gun tip tail flower、Foxs tail。 42：What is the role of the electrode？ a：It has the function of conducting current and supplying filler metal to the molten pool。 43：What are the forces acting on the droplet？ a：Have gravity、Surface tension、Electromagnetic compression force、Spot pressure、equiionization Subcurrent force、Arc gas blowing force。 44：What are the defects easily produced when gas welding cast iron a：There are mainly white spots、crack、Porous refractory oxides, etc。 45：What is weldability？
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