摘要
轴承钢油淬后往往发生表面硬度偏低,其原因是因为冷却途中冷速急剧变化引起的,特别是在蒸汽膜期长,特征温度低的油中淬火时更易发生。
Surface hardness of bearing steet decreased after quenching, because temperature traverse quickly in cooling-off The case happens easily when the time of steam film is longer and the temperature of quenching oil is lower .
关键词
轴承钢
硬度分布
蒸汽膜
bearing steel, Steam film, Hardness distribution .
