研究了淬火温度、冷却方式、回火温度和回火次数对高速钢轧辊组织和性能的影响.结果表明,油冷条件下,淬火温度低于1050℃,随着温度升高,硬度升高,超过1100℃,硬度反而降低.盐浴冷却(盐冷)和空冷条件下,淬火温度对硬度影响结果相似,但获得最高硬度的淬火温度高于油冷时的淬火温度.回火温度低于350℃,高速钢硬度变化不明显,超过475℃,随回火温度升高,硬度升高,并在525℃达到最高值,继续提高回火温度,硬度降低.二次回火后硬度变化不大,三次回火后,硬度反而降低.空冷高速钢轧辊,淬透性差;油冷高速钢轧辊易出现裂纹;盐冷高速钢轧辊,具有优良的淬透性,不易出现裂纹,辊面硬度高,硬度均匀性好,耐磨性好.
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