Effects of Hardness on Sliding Wear Behavior of Tempered Bearing Steel

Abstract

− In this study, sliding wear tests were conducted to investigate the effects of tempered hardness on the sliding wear behavior of bearing steel. At a sliding speed of 0.3 m/s, the wear resistance of bearing steel with a tempered hardness of HRC 54 was superior to that with HRC 62. It was found that bearing steel with HRC 54 showed a strong tendency for the occurrence of oxidation wear at that speed, compared to that with HRC 62. This would be due to the troostitic structure of bearing steel with HRC 54, which is highly susceptible to corrosion. In this context, it is considered that sliding wear behavior could be affected by the corrosion resistance of the material.

Analysis of Sliding Wear Behavior of Mild Steel According to Hardness of Dissimilar Mating Materials

“…그러나 동종재료 간의 연구결과를 보면 경도 에 따른 마모특성 변화는 마모면상의 마모형태 즉 산 화물의 생성 정도에 크게 영향을 받는 것으로 확인되 었다 [3][4][5][6][7][8]. 그래서 미끄럼 속도에 따라서는 경도에 따른 마모가 Holm-Archard식을 따르지 않게 된다는 것이다.…”