Study on wear controlling of slide gate mechanism wheel

The friction and wear behavior of 9Cr2Mo quenched wheel was investigated under dry friction and solid lubricant by wear tester. The contact stress distribution during the two kinds of conditions was analyzed by finite element method. The experiment results show that the friction coefficient of 9Cr2Mo quenched wheel against high speed steel is 0.34∼0.58 under dry friction and 0.05∼0.15 under solid lubricant. The friction coefficient under two kinds of conditions decreases with the increase of load. The wearing capacity of the wheel is decreased obviously and the friction process is smooth under solid lubricant. The results of the contact stress analysis show that the contact stress under solid lubricant is smaller than dry friction. The friction coefficient and the wearing capacity were reduced by the solid lubricating coating.