莱钢近终形异型坯表面纵裂原因分析及改进措施  

Analysis and Improvement Measures of the Near Net Shape Beam Blank Surface longitudinal Crack in Laigang

作　　者：张书维[1] 孟宪俭[1] 张兆柱[1] 杨君胜[1] 张树萍[1] 

机构地区：[1]莱芜钢铁集团有限公司,山东莱芜271104

出　　处：《山东冶金》2007年第3期29-30,共2页Shandong Metallurgy

摘　　要：对近终形异型坯腹板表面纵向裂纹问题进行了分析,找出了工艺和设备方面的影响因素,通过对钢水质量、冷却条件、设备结构等方面进行优化改进,解决了铸坯表面裂纹缺陷问题,铸坯质量合格率由94%提高到99.5%。This paper analyses the longitudinal crack on the near net shape beam blank web surface in Laigang, gives the influencing factors and improved measures. By taking measures including improving the quality of molten steel, optimizing the cooling condition and optimizing the equipment structure, the problem of the longitudinal crack on the near net shape beam blank web surface has basically solved, and qualified rate of cast steel up to 99.5% from 94%.

关 键 词：近终形连铸 异型坯 腹板 纵向裂纹 表面裂纹 

分 类 号：TF777[冶金工程—钢铁冶金]