作者单位:ZHANG Yan-wen,ZHANG You-deng,XU Zhu-tao(Research and Development Center of Wuhan Iron and Steel Company, Wuhan 430080, China)张彦文,张友登,许竹桃(武钢研究院,湖北武汉430080)TAO yong(Quality inspection Center of Wuhan Iron and Steel Company, Wuhan 430080, China)陶勇(武钢质检中心,湖北武汉430080)