Peculiarities of the strain hardening of surface layers of parts by deformational cutting

Improving the wear resistance of machine parts requires the development and study of new methods of surface hardening such as deformational cutting. One of the factors influencing the surface wear is the microhardness distribution on friction surfaces. This paper studies the microhardness distribution in a surface layer formed during deformational cutting. Tools with different combinations of plan approach and side cut angles were used to cut metallographic polished samples of 30HGSA steel needed for this study. Experimental data on the microhardness distribution in the surface layer formed by deformational cutting were obtained. The experimental results prove that the application of the deformational cutting technique for machining ferritic-pearlitic 30HGSA steel makes it possible to improve the initial microhardness.

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