作者单位:WEI Huan-jun,GUO Jian,PAN Wen-na,SUN Hong-liang(Technical Center of Tangshan Iron and Steel Co. Ltd. , Tangshan 063016, China)魏焕君,郭健,潘文娜,孙宏亮(唐山钢铁股份有限公司技术中心,河北唐山063016)ZHAO Wen-cheng(Metallurgical Department, Tangshan Vocational College of Science and Technology, Tangshan 063001, China)赵文成(唐山科技职业技术学院冶金系,河北唐山063001)