一、前言轧制6.5mm盘条所用的轧辊,选用瓦房店轴承厂生产的GCr15钢,经锻造成型及轧后球化退火,机械加工成轧辊后,最终淬火加低温回火处理。 1985年4月生产的14个轧辊,经机械加工后进行淬火和低温回火处理时,连续淬裂12个,其中沿轴向断裂成两半或三半的有11个,另一个发现有裂纹。其断裂有的是在淬火过程中断裂的,有的则是回火过程中断裂的。我们对轧辊断裂原因进行了分析研究。二、轧辊生产工艺 First, the preamble Roll 6.5mm rod used in the selection of Wafangdian Bearing Factory production of GCr15 steel, after forming and rolling ball annealing, machining into rolls, the final quenching plus tempering. The 14 rolls produced in April 1985 were hardened and tempered at low temperature for 12 times after they were machined, of which 11 were broken into two halves or three halves in the axial direction, and the other one was found cracked . Some of its fracture fracture in the quenching process, while others are tempering fracture process. We analyze the causes of roll break. Second, the roll production process