摘要
H型钢出现批量边裂缺陷，通过连铸坯低倍检验、气体分析和金相检验等方法，找出了连铸坯质量缺陷（表面细微裂纹、夹杂物含量高）是产生边部裂纹的主要原因。在炼钢、连铸工序采取了相应的改进措施，使得H型钢边部裂纹情况得到了有效控制。
Aiming at a lot of edge cracks of H-beam, through macroscopic testing, gas analysis and metallographic examination of continuous casting slab, it was found that the main reason was the quality defects of continuous casting slab （surface micro cracks and high inclusion content）. Then the corresponding measures were taken during steelmaking and continuous casting processes, and the edge cracks of H-beam were effectively controlled.
出处
《莱钢科技》
2014年第3期29-31,共3页
Laigang Science & Technology
