The results showed that the major cause of longitudinal surface cracking of 20 steel tube blanks was higher nonmetallic inclusion content in the steel than standard value.
结果表明: 非金属夹杂物超标是导致管坯表面产生纵向裂纹的主要原因。
The causes of surface longitudinal cracking were analyzed. Countermeasures were put forward based on the production practices of thin slab casting and rolling at Tonghua Steel Co.
分析了连铸薄板坯表面纵向裂纹的产生原因,结合通钢薄板坯生产实际情况,提出了改进措施。
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