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introduction： 1 Appearance characteristic Vibration specificFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]： A.The diameter of the rolling element is increased，The length of the rolling element is increased。 B.The cage is guided by the outer rim，Reduce the force on the roller。 C.Guide roller with inner rim，Improve roller operation。 D.Cylindrical roller bearing cage adopts integral structure，Greatly enhanced strength。 E.The outer diameter of the aligning bearing is designed with an oil groove oil hole，Good lubrication effect。
2015-06-14 Reading quantity 1557
introduction：Made of white cast iron after annealing，Also known as ductile iron or horse iron。Its microstructure is ferrite or pearlite（See optical metallographic examination），Flocculent graphite is distributed on the matrix（See picture[Metallographic diagram of malleable cast iron]）。A shovel from the Warring States Period unearthed in Luoyang, Henan Province, China, is made of malleable cast iron，The microstructures are clumps of flocculent graphite，The matrix is mostly ferrite，There is a small amount of pearlite。 Types Malleable cast iron is divided into white heart malleable cast iron and black heart malleable cast iron。The latter can be divided into ferritic black core malleable cast iron and pearlite black core malleable cast iron。 ①White heart malleable cast iron：By the French
2015-06-14 Reading quantity 2878
introduction：A wear in which abrasive particles or protrusions cause the surface material of a part to be lost during friction。Abrasive particles generally refer to non-metallic materials，quartsiness、Hard metal particles or protrusions such as rock and sand can also cause wear on soft metals,Abrasive wear occurs when work-hardened scraps fall between friction pairs。Abrasive particles softer than the part material can also cause wear，This phenomenon is commonly seen in coal mining machinery。 The main mechanism of abrasive wear is:①microcutting,That is, hard abrasive particles are used to make extremely small cuts to the surface of the part like a tool,Chip formation;②When the abrasive particles are round or at an inappropriate Angle relative to the surface of the part，Furrow only the surface，
2015-06-14 Reading quantity 2914
introduction： Electromagnetic clutch installation precautions 1、Use the mechanical side of the frame while maintaining the lead，It is also necessary to use terminal boards and so on for precise connection。 2、Please have no moisture at all、The dry electromagnetic clutch is used when the oil content is equal，If the friction part is stained with water or oil and other substances，It will greatly reduce the frictional torque，The sensitivity of the clutch is also reduced，In order to avoid these situations in use，Please add cover。 3、When used in places with a lot of dust，Please release the clutch in full
2015-06-14 Reading quantity 2888
introduction：The sliding friction between the running shaft and the shaft seat becomes friction，A precise mechanical element that reduces friction losses，Be calledTIMKENbearing[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。]。TIMKENBearings are generally made up of inner rings、Outer ring、The body and the cage are composed of four parts。theTIMKENHow are bearings installed？
2015-06-14 Reading quantity 1533
introduction： Raw material mill is a large equipment for alumina production，Mainly undertake the task of pulp preparation，The raw material is installed in the millφ80~100mmSteel ball,Grinding body lining diameterφ2600mm，The lining plate is made of high manganese steel，heavy67~75kg。The surface of the liner must be smooth and flat，Local bulge≤2mm，Casting dimensional tolerance±2mm。Dense internal mass is required，No casting defects affecting strength。 My unit in the use of ordinary sand casting raw materials at the same time，The casting was also produced by the lost die negative pressure casting。The surface finish of the casting is greatly improved by the lost mold negative pressure casting、Degree of regularity and
2015-06-14 Reading quantity 2862
introduction： By measuring the change of induced eddy current in an alternating magnetic field of a conducting object﹐A nondestructive testing method used to detect or determine the physical properties of an object。 principle Place the coil with alternating current on the metal plate to be measured or cover the metal tube to be measured(See picture Diagram of eddy current generation in a metal specimen )。An alternating magnetic field is generated in and near the coil﹐The induced alternating current in the specimen is produced in the shape of a vortex﹐vortex。Distribution and size of vortices﹐In addition to the coil shape
2015-06-14 Reading quantity 2931
introduction：Full-load efficiency：At maximum load（Failure stop output torque），Transmission efficiency of reducer。 Working life：Reducer under rated load，Cumulative working time at rated input speed。 Rated torque：It is the torque allowed for a long running time during the rated life。When the output speed is100turn/points，The life of the reducer is the average life，Above this value, the average life of the reducer will be reduced。When the output torque is more than twice, the reducer fails。 noise：Unit decibeldB（A），This value is the input speed3000turn/points，No load，Range deceleration
2015-06-14 Reading quantity 2933
introduction：A lathe with a turret holder capable of holding multiple knives。Turret holder can be transposed﹐It used to be mostly hexagonal﹐So turret lathe old turret lathe。Turret lathes are AmericanJ.Fichuus1845invented。It is usually used to turn the bar material held in the spring chuck or the billet mounted on the chuck﹑Drilling and reaming。After the use of additional devices﹐Threading and copying are also available。Turret lathes are suitable for mass production。 The axis of the turret tool holder is mostly perpendicular to the machine tool spindle﹐Longitudinal feed can be made along the bed guide rail。Average size﹑The medium turret lathe is of sliding saddle type﹐The turret chute moves directly onto the bed
2015-06-14 Reading quantity 2983
introduction：Continuous casting and rolling technology is the use of thin slab continuous casting in the steelmaking workshop，The thickness of the cast slab is only 50mm 、temperature 900 ℃ 。Then its heated in a tunnel furnace 1000 ℃above，Feed into the finishing group of the hot mill，Roll to 0.8-12mmHot rolled strip steel。In this way, the steel rolling operation is completed in the steelmaking workshop，Make the steel process continuous and short process，To an unprecedented height。
2015-06-14 Reading quantity 2989
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