作者单位:PAN Shao-hui,WANG Hui-feng,SUN Ya-ping,ZHAO Wen-cheng(Metallurgical Department, Tangshan Vocational College of Science and Technology, Tangshan 063001, China)潘韶慧,王会凤,孙雅萍,赵文成(唐山科技职业技术学院冶金系,河北唐山063001)GAO Zhi-ping(Production and Manufacture Department, Tangshan Iron and Steel Co. ,Ltd, Tangshan 063016, China)高志平(唐山钢铁股份有限公司生产制造部,河北唐山063016)