| 中厚板粗轧机工作辊辊颈断裂失效分析 |
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| 引用本文： | 张骞,成晓芳.中厚板粗轧机工作辊辊颈断裂失效分析[J].冶金设备,2009(5):54-56. |
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| 作者姓名： | 张骞 成晓芳 |
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| 作者单位： | 1. 包钢(集团)公司薄板坯连铸连轧厂,包头,014010
2. 包钢(集团)公司第一轧钢厂,包头,014010 |
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| 摘 要： | 采用宏观断口分析、金相检验及试件的应力拉伸试验，对轧辊辊颈断裂进行失效原因分析。结果表明，此轧辊在制造过程中出现石墨球化和孕育不良等铸造缺陷，组织中石墨出现枝晶状及少量团状石墨，导致轧辊辊颈强度明显下降，在上机使用过程中即发生断裂。
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| 关 键 词： | 高NiCr无限冷硬工作辊 石墨球化不良 失效分析 |
Fracture Analysis of the Work Roll's Neck for Heavy and Medium Plate Rough Mill |
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| Zhang Qian,Cheng Xiaofang.Fracture Analysis of the Work Roll's Neck for Heavy and Medium Plate Rough Mill[J].Metallurgical Equipment,2009(5):54-56. |
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| Authors: | Zhang Qian Cheng Xiaofang |
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| Affiliation: | Zhang Qian, Cheng Xiaofang ( 1. CSP Plant of Baotou Iron and Steel (Group) Co., Baotou 014010 ; 2 . First Rolling Plant of Baotou Iron and Steel (Group) Co., Baotou 014010) |
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| Abstract: | The fracture of rough mill work roll＇s neck broken was investigated with macroscopic and microcosmic methods. The results showed that in the case of manufacture graphite badly shaped, pregnancy declined and other casting fauhs. Microcosmic appearance of spot and piece graphite can lead to the intensity of the roll neck decline, low intensity leads to accidents. |
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| Keywords: | High Ni-Cr limitlessly cold work Roll Graphite badly shaped Failure analysis |
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