摘要
利用有限差分方法和传热方程对端淬试样及磨球淬火冷却过程的温度场进行了计算,给出了端淬试样及磨球不同位置从800℃降到400℃的平均冷却速度.建立了两者间相同冷却速度的位置对应关系,从而利用端淬试样的硬度分布预测磨球的硬度分布.对制备的直径50~100 mm试验钢磨球淬火硬度与计算结果进行对比,二者吻合较好.
This article through the equation of heat conduction and in finite difference mathematical method,gave out the average cooling speed of the end quenching specimen and the grinding ball from 800 ℃ to 400 ℃. Based on the same cooling speed with the same hardness,the relationship of the distance of end quenching specimen and the grinding ball had been established,so that we can using the end quenching sample hardness distribution to predict grinding ball hardness distribution. Compared with the test of steel grinding ball diameter from 50 mm to 100 mm quenching hardness,the calculation result is good.
出处
《天津理工大学学报》
2015年第5期30-34,共5页
Journal of Tianjin University of Technology
关键词
磨球
淬硬深度
有限差分
端淬试验
平均冷却速度
grinding ball
hardening depth
finite difference
jominy test
average cooling speed
