a: Anti-wear test machine using The MS-10J type four-ball test machine produced by Xiamen Sky machine, with the spindle movement of the upper ball using The Shanghai Steel Ball Factory production of GCr15 bearing steel, steel ball diameter of 12.7mm, hardness of HRC58-62, oil cup stationary three balls for fine powder diameter crystal solution, diameter 12.7mm, density of 2800Kg/m3.<br>b: Experimental conditions are: 80Kg, 200rpm, 75 600s
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