| 42CrMo连铸辊裂纹原因分析 |
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| 引用本文： | 边勇俊,张娜,盛静波,劳金越,陈洁. 42CrMo连铸辊裂纹原因分析[J]. 金属热处理, 2010, 35(1) |
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| 作者姓名： | 边勇俊 张娜 盛静波 劳金越 陈洁 |
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| 作者单位： | 国家钢铁产品质量监督检验中心(唐山),河北,唐山,063000 |
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| 摘 要： | 通过宏观及微观分析对250 mm的42CrMo钢连铸辊的开裂原因进行分析。结果表明,铸造缺陷、非金属夹杂物含量较多,调质处理温度过高、保温时间较长,以致形成粗大珠光体和大量的魏氏组织,是造成连铸辊开裂的主要原因。另外,存在应力集中,机加工应力过大也导致了连铸辊的开裂。
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| 关 键 词： | 42CrMo钢 裂纹 非金属夹杂 魏氏组织 |
Crack analysis on continuous casting roller of 42CrMo steel |
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| BIAN Yong-jun,ZHANG Na,SHENG Jing-bo,LAO Jin-yue,CHEN Jie. Crack analysis on continuous casting roller of 42CrMo steel[J]. Heat Treatment of Metals, 2010, 35(1) |
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| Authors: | BIAN Yong-jun ZHANG Na SHENG Jing-bo LAO Jin-yue CHEN Jie |
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| Abstract: | Cracking causes of φ250 mm continuous casting roller with 42CrMo steel were analyzed by macro-microstructure analyses.The results show that the main reasons for cracking are that there are a lot of casting defect and serious nonmetallic inclusions,and coarse pearlite and plentiful Widmanstatten structure because of high austenitizing temperature and long holding time for quenching and tempering process,and stress concentration and machining excessive stress also lead to the crack of continuous casting roller. |
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| Keywords: | 42CrMo steel crack nonmetallic inclusions Widmanstatten structure |
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