轧辊表面热裂纹深度简易计算方法研究  

Research on Simplified Computing Method of Hot Crack Depth on Roll Surface

作　　者：杨秀霞 万敏 李宝秀 王晋涛 孙格平[3] Yang Xiuxia;Wan Min;Li Baoxiu;Wang Jintao;Sun Geping

机构地区：[1]河北机电职业技术学院,河北054000 [2]河北省高等院校金属材料加工与数字化成型应用技术研发中心,河北054000 [3]中钢集团邢台机械轧辊有限公司,河北054025

出　　处：《大型铸锻件》2021年第6期50-52,共3页Heavy Casting and Forging

摘　　要：利用传热学原理,采用大平板模型对传热偏微分方程进行求解,通过对轧辊轧制过程温度变化的分析,依据轧制时轧辊表面温度经验数值,采用余误差函数求解不同深度的温度分布,首次提出压缩屈服强度、温差与裂纹深度的定量对应模型。根据不同轧辊材质的压缩屈服强度,分别建立了热裂纹深度计算公式,和实际轧钢过程裂纹情况有较好的符合性,可作为一种热裂纹计算的简易方法,快速、便捷、高效。Based on heat transfer principle,partial differential equation of heat transfer has been solved by using massive plate model.Through analyzing roll temperature changes during rolling,quantitative correspondence model between compressive yield strength,temperature change and crack depth has been first presented by using complementary error function to establish temperature distribution at different depth,according to empirical temperature value at roll surface during rolling.Based on compressive yield strength of different roll materials,computing methods of hot crack depth have been established in accord with actual crack condition.This can be the simplified computing method of hot crack,which is fast,convenient and efficient.

关 键 词：轧辊 压缩屈服强度 热裂纹深度 余误差函数 大平板 

分 类 号：TG333.17[金属学及工艺—金属压力加工]