Estudo tribológico dos aços ferramenta VP20TS, VP20ISO, VPATLAS E HARDMAX 500

Abstract

From the study of materials throughout history it was discovered that metals could have their mechanical properties improved by heat treatments or by the addition of other alloy elements. Among the metallic materials, the tool steels stand out, being used in the manufacture of industrial tools, which are subjected to high repetitive forces. With constant technological advancement and component durability requirements, materials that have a high wear resistance are increasingly sought. Thus, it is necessary to study the tribology of materials, defined as the science and technology of surfaces, which have interaction through relative movement, and the practices that are related to them. The present work aims the tribological study of the tool steels VP20TS, VP20ISO, VPATLAS and HARDMAX 500, supplied by the company Villares Metals, in order to compare them for their hardness and wear resistance by hardness test and ASTM G65 abrasive test. Also performing metallographic tests and scanning electron microscopy for analysis of the interface of the tool steels. The tests show that the material loss in ASTM G65 abrasive wear test is linked to the hardness of the material as well as its microstructure and heat treatments, with HARDMAX 500 tool steel being the material with the most satisfactory wear resistance results.