【作者】 蒋志强； 符寒光；

【Author】 Jiang Zhi-qiang~1 and Fu Han-guang~2 (1. Department of Industrial Engineering, Zhengzhou Institute of Aeronautics, Zhengzhou Henan 450015, P.R.China; 2. School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an Shanxi 710049, China)

【机构】 郑州航空工业管理学院工业工程系； 西安交通大学；

【摘要】 研究了淬火温度、淬火冷却方式和回火温度对高铬铸铁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1000℃,随着淬火温度升高,硬度升高,随后硬度反而下降,雾冷和空冷条件下,淬火温度对硬度的影响规律与油冷时相似,获得最高硬度的淬火温度超过油冷时的淬火温度,达到1025℃。回火温度低于500℃时,高铬铸铁轧辊硬度变化不明显,超过575℃,硬度明显下降,高铬铸铁轧辊在450℃回火4小时,具有良好的综合力学性能和优异的耐磨性。更多还原

【Abstract】 The influences of quenching temperature, cooling pattern and temper temperature on the structures and properties of high chromium cast iron roll were investigated. The results showed that the hardness of high chromium cast iron roll increased until the quenching temperature reached 1000°C and dropped down as the quenching temperature exceeded 1000℃ in oil cooling. The hardness obtained in air cooling and spraying cooling exhibited similar tendency as that in oil cooling, but the temperature at which the highest hardness was obtained with slower cooling processes changed to 1025°C. Temper temperature was lower than 500℃, the hardness of high chromium cast iron roll had little change, when it exceeded 575℃, the hardness decreased obviously. High chromium cast iron roll tempering at 450°C for 4hs had excellent comprehensive mechanical properties and wear resistance.更多还原