| H13钢穿心杆变形及颈缩原因分析 |
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| 引用本文： | 高阳,陈国辉,余荣杰,张小聪.H13钢穿心杆变形及颈缩原因分析[J].模具工业,2014(6):65-69. |
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| 作者姓名： | 高阳 陈国辉 余荣杰 张小聪 |
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| 作者单位： | 广州市机电工业研究所,广东广州510663 |
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| 摘 要： | 通过对失效的H13钢穿心杆进行化学成分、宏观形貌和显微组织检测,分析其发生变形和颈缩的原因。结果表明,穿心杆失效并不是真空淬火、氮-碳共渗等热处理工艺控制不当,直接原因是非金属硫化物夹杂超标,带状偏析严重及在偏析带内存在较多的链状分布碳化物液析引起的。
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| 关 键 词： | H13钢 穿心杆 挤压 颈缩 失效分析 |
Cause analysis of deformation and necking of H13 steel hollow rod |
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| GAO Yang,CHEN Guo-hui,YU Rong-jie,ZHANG Xiao-cong.Cause analysis of deformation and necking of H13 steel hollow rod[J].Die & Mould Industry,2014(6):65-69. |
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| Authors: | GAO Yang CHEN Guo-hui YU Rong-jie ZHANG Xiao-cong |
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| Affiliation: | (Mechanical ＆ Electronic Industrial Institute of Guangzhou, Guangzhou, Guangdong 510663, China) |
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| Abstract: | The causes of deformation and necking of invalid H13 hollow rod were analyzed by testing the chemical composition, macro morphology and microscopic structure. The re-sult shows that the invalidation of the rod is not because of the improper control of heat treatment process such as vacuum hardening and nitrocarburizing; the direct cause is the excess of non-metal sulphide inclusion, serious banded segregation and more chain distribu-tion of carbide liquation existing in the segregation band. |
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| Keywords: | H13 steel hollow rod extrusion necking invalidation analysis |
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