NEW CERMET ANTIFRICTION MATERIALS FOR RUBBING PARTS,

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Abstract:

The wear and antifriction properties of sintered metal materials consisting of matrices of low-carbon steel, stainless steel 1Kh18N9T, bronze, and nickel, unsaturated and vacuum saturated with teflon, were investigated on friction apparatus MT-7 at a load of 20 kgsq cm and 0.03 msec. It was found that the wear of low carbon steel and nickel-based materials was very high, while bronze and stainless steel materials gave similar wear and friction results with teflon saturated matrices giving vastly improved characteristics bronze-wear - 0.0001-1.0035 gmhr, coefficient of friction 0.01-0.05 for teflon saturated vs 0.18-0.22 and 0.28-0.32 for unsaturated steel--6 x 10-5-0.08 and 0.01-0.09 saturated vs 0.09-0.22 and 0.22 unsaturated. Bearing tests conducted in 30 and 60 nitric acid and in 1 caustic soda solution showed that saturated 1Kh18N9T material on chrome-plated 1Kh18N9T surface and saturated bronze on 1Kh18N9T gave best results respectively. End seals operating in 30 nitric acid showed least wear and friction when made of saturated 1Kh18N9T material rubbing against a chrome surface. Author

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