本文从金属结晶组织与轧制受力关系方面,分析了成都无缝钢管厂两次试轧大口径电渣钢不锈钢厚壁管所出现的钢管内壁横裂缺陷及其缺陷原因,提出了消除缺陷和改善质量的途径。 In this paper, the relationship between the microstructure of the metal and the rolling force was analyzed. The transverse cracks and the causes of the defects appeared on the inner wall of the large-diameter stainless steel thick-walled tubes of the trial run of the Chengdu Seamless Steel Tube Plant were analyzed. And ways to improve quality.