1、冷轧机机架工作应力状态的光弹性实验研究冷轧机机架在使用过程中,发现在压下螺母孔内的过渡圆弧处,机架的上横梁圆孔的侧边缘处,以及窗口圆角沟槽处,多发生开裂现象,而致使整个机架报废.为了分析其开裂原因,为轧机设备改造和为设计新轧机提供参考数据,以避免机架报废所带来的经济损失,已由沈阳重机厂、太原钢铁公司和东北重型机械学 1. Photoelastic experiment research on the working stress state of the cold rolling stand In the process of using the cold rolling mill stand, it is found that at the transition arc of the nut hole, at the side edge of the circular hole of the upper beam of the frame, As well as the window fillet groove, more cracking phenomenon, leaving the entire frame scrapped.In order to analyze the causes of cracking, for the transformation of the mill equipment and to provide reference data for the design of new rolling mill, in order to avoid the economic losses caused by the scrapped frame , Has been heavy machinery plant in Shenyang, Taiyuan Iron and Steel Company and Northeast Heavy Machinery