太钢集团东方钢铁有限公司 75t钢包吊钩是炼钢车间的关键设备部件 ,担负着繁重的工作任务。吊钩系 2 0号钢锻造而成 ,1 993年年检时就发现有平行于锻压面的层状冶金和锻造缺陷。由于生产需要 ,1 997年 1月炼钢平炉扩容 ,吊钩工作载荷从 75t增加至 90 t,为此 ,请设计部门重新进 TISCO Dongfang Iron & Steel Co., Ltd. 75t ladle hook is the key equipment components of the steelmaking plant, shouldering the heavy task. Hook 20 No. forging from the system, in 1993 the first inspection found in parallel with the forging surface layered metallurgy and forging defects. Due to the need for production, the open hearth furnace expansion in January 1997 increased the working load of the hooks from 75t to 90t. For this purpose, please re-enter the design department