| SS400板坯表面纵裂原因分析与改进措施 |
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| 引用本文： | 赵文成,;王淑平,;甄维静,;臧振东.SS400板坯表面纵裂原因分析与改进措施[J].连铸,2009(6):36-38. |
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| 作者姓名： | 赵文成 ;王淑平 ;甄维静 ;臧振东 |
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| 作者单位： | [1]唐山科技职业技术学院冶金系,河北唐山063001; [2]河北唐钢集团技术中心,河北唐山063016 |
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| 摘 要： | SS400钢连铸板坯在生产检验中常出现表面纵裂缺陷。对有裂纹的连铸板坯进行了高温塑性试验、低倍、金相组织和夹杂物分析。结果表明,钢水中硫含量高、钢中存在夹杂物、连铸板坯坯壳厚度不均匀、结晶器锥度和矫直温度不合理均可引起连铸板坯表面纵裂。提出了避免连铸板坯产生表面裂纹的措施。
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| 关 键 词： | 连铸板坯 表面纵裂 高温塑性 夹杂物 |
Causes and Improving Measures of Longitudinal Surface Cracking of SS400 Slab |
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| Affiliation: | ZHAO Wen-cheng, WANG Shu-ping, ZHENWei-jing, ZANG Zhen-dong (1. Metallurgical Department ,Tangshan Vocational College of Science and Technology , Tangshan 063001, Hebei, China ; 2. Technical Center of Tangshan Iron and Steel Group Co. , Ltd. , Tangshan 063016, Hebei, China) |
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| Abstract: | Some longitudinal cracks on the surface of SS400 continuous casting slab were detected. The slabs with these cracks were analyzed by means of high temperature plasticity , macrostructure, microstructure and inclusion test. The results showed that the reasons caused the surface longitudinal cracks included the high content of rS3 in molten steel , the inclusions in slab, the variable slab surface shell thickness ,unreasonable mold taper and straightening temperature. Some ways to control the surface cracking in slab continuous casting were proposed. |
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| Keywords: | continuous casting slab longitudinal surface cracking high temperature plasticity inclusion |
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