engleski

Influence of macro-strain during heat treatment on the choice of wear protection procedure

Beside the hard surface layer, all machine elements that are subjected to wear should have the appropriate, isually very high geometrical precision, and in some cases small surface roughness. Rherefore, surface wear resistance of induction hardened C60E and 16MnCr5 case hardened at effective depth of 1, 2 mm was tested. The testing was performed on the friction and wear tsting device that uses disc-pedals, in the chamber, with oil lubrication and the addition of SiO2. It was pointed out that macro-strain might occur during case hardening of some elements. It is questionable whether more than 0, 2 mm should be added for final machining after case hardening.

induction hardening; case hardening; depth of layer; wear resistance

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