H型钢万能轧制过程水平辊温度场研究

Temperature Field Research of Horizontal Roller for Universal Rolling Process of H-Beam

运用有限元方法对H型钢万能轧制过程水平辊温度场进行了数值模拟,根据模拟结果分析了水平辊辊面温度分布状况,结果表明:与H型钢腹板部位接触的水平辊辊面温度较低,与H型钢R角部位接触的水平辊辊面温度最高。此外,还完成了小型H型钢万能轧机水平辊冷却试验,水平辊冷却方式分别为气雾冷却和水冷,试验结果表明:轧辊采用气雾冷却方式进行冷却时,型钢腹板残留冷却水较少且型钢表面温差较小,轧辊辊面温差和轧辊磨损程度均较小,且轧后轧辊温度更容易降至室温。总体而言,轧辊采用气雾冷却效果比采用水冷效果好。

Numerical simulation of horizontal roller temperature for universal rolling process of H beam was accom plished by FEM method. According to simulation results, temperature distribution of horizontal roller surface was analyzed. The results show that： temperature of horizontal roller surface contact with web of H-beam is lower, and contact with R corner of H-beam is highest. In addition, horizontal roller cooling experiment for universal mill of small size H-beam was finished. The cooling method of horizontal roller was mist cooling and water cooling. The experimental results show that： when roller adopted mist cooling method, there are less residual water on H beam web, smaller temperature difference of H-beam surface, smaller wear degree and temperature difference of roller. Besides, the temperature of roller is easier to fall to room temperature after roiling process. In general, the effect of mist cooling method adopted by roller is better than water cooling method.