轴承钢水冷的实验模拟研究

Experiment simulation on bearing steel by water-cooling

针对大端面轴承钢在轧后冷却过程中由于冷速过慢引起碳化物网状不合问题,利用实验室自制设备,对从现场剪取的轧材进行了模拟实验研究。记录了不同断面、不同冷却条件下的轧材径向温度变化趋势,提出合理的冷却制度,不同直径的圆钢心部温度降速在1.5-6℃/s变化,直径越小,降速越大。为进一步工艺设计和计算机模拟研究提供了依据。

Aimed at ungraded network carbon compound in heavy cross-section bearing steel occur during the cooling process of being cooled, which is caused by slow cooling speed, simulation experiment was carried on to study rolled metal clipped from field by using of home-made equipment in the lab. The trend of temperature changes of rolled metal in different cross-section or different cooling condition was recorded;and it was obtained that the cooling rate of the center temperature is from 1.5 - 6℃/s by adopting reasonable cooling speed in different diameter, and the smaller the diameter is, the greater the decreasing rate of the center temperature, which provides the basis for further computer simulation technological design.