作者单位:WANG Hui-feng,PAN Shao-hui,LI Xiu-hua,ZHAO Wen-cheng(Metallurgical Department, Tangshan Vocational College of Science and Technology,Tangshan 063001, China)王会凤,潘韶慧,李秀华,赵文成(唐山科技职业技术学院冶金系,河北唐山063001)ZHANG Xiao-guang(Technical Center of Tangshan Iron and Steel Co. ,Ltd. , Tangshan 063016, China)张晓光(唐山钢铁股份有限公司技术中心,河北唐山063016)