炼钢
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摘要: 针对鞍钢股份有限公司某钢厂含硼钢SS400B板坯存在严重角裂缺陷的生产现状,为防止热轧钢卷形成翘皮缺陷,对板坯角裂的产生原因进行了深入研究。通过采取对保护渣性能进行优化、改善二冷区冷却强度及调整连铸机辊列形式等改进措施,使含硼钢SS400B板坯角裂缺陷得到了有效的控制。板坯角裂缺陷的发生率由87.6 %降低到9.7 %,生产的板坯可不经过清角处理即可满足后道热轧工序的要求,且存在缺陷的每卷热轧板卷翘皮数量小于20处,能够满足用户的使用需求。
关键词: 含硼钢, 板坯, 角裂
Abstract: Based on the serious corner transversal cracks on SS400B steel slabs in certain steel plant of Angang Steel, to prevent creating hot rolled steel coil defects, the cause of corner transversal crack was analyzed. By taking relevant countermeasures, such as improving the performance of mold power, reducing the strength of second cooling and adjusting the arrangement of caster rollers, the corner crack problem of SS400B steel slab had been effectively controlled. The crack ratio had been dropped from 87.6 % to 9.7 %, the slab without clearance angle processing could meet the requirements of hot rolling process and the number of hot rolled steel coil defects were less than 20, then the hot rolled steel could meet the users’need.
Key words: boron bearing steel, slab, corner transversal crack
许孟春1,殷 浩2,于赋志1, 李德军1,张 宁1,金百刚2. SS400B钢板坯角裂缺陷的产生与控制[J]. 炼钢.
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链接本文: http://journal05.magtechjournal.com/Jwk3_gt/lg/CN/
http://journal05.magtechjournal.com/Jwk3_gt/lg/CN/Y2015/V31/I4/26