CONSIDERATIONS REGARDING THE COMPARATIVE DETERMINATION OF MATERIALS HARDNESS SUBMITTED TO HEAT TREATMENTS

Ramona Monica STOICA, Daniela VOICU, Laszlo BAROTHI, Radu VILAU

Abstract


Present paper aims to determine a comparative analysis of mechanical part hardness, used in
automotive field, by highlighting values measured in different functional surfaces. Therefore, it was used a Fervi D08 hardness tester and it was applied the Rockwell scale in order to enunciate several conclusions regarding the influence of heat treatments on materials, as well as hardness value distribution on the entire surface of a mechanical part. At the same time, it was used a coordinate measuring machine to determine depth of imprinted indentation on tested surfaces. Such an analysis allows evaluating the behaviour of a mechanical part in case of different stresses which occur during functioning.


Keywords


Hardness; Heat treatment; Coordinate measuring

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