| 5CrMnMo热锻模淬火开裂原因分析 |
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| 引用本文： | 付华,吴松乾.5CrMnMo热锻模淬火开裂原因分析[J].机械工程材料,2004,28(9):49-51. |
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| 作者姓名： | 付华 吴松乾 |
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| 作者单位： | 1. 石家庄铁道学院材料科学与工程系,河北,石家庄,050043;燕山大学材料科学与工程学院,河北,秦皇岛,066004
2. 江阴职业技术学院,江苏,江阴,214433 |
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| 摘 要： | 对出现开裂的5CrMnMo大型热锻模进行了金相、硬度、断口分析。结果表明：淬火加热温度过高，加热时间过长，形成了粗大的马氏体组织；淬火冷却时终冷温度过低，导致过高的淬火应力使锻模表面出现淬火开裂现象。针对此问题采取相应措施后避免了锻模的淬火开裂。
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| 关 键 词： | 热锻模 5CrMnMo 淬火 裂纹 |
| 文章编号： | 1000-3738(2004)09-0049-03 |
Failure Analysis of the Quench-cracking of 5CrMnMo Hot Forging Die |
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| FU Hua.Failure Analysis of the Quench-cracking of 5CrMnMo Hot Forging Die[J].Materials For Mechanical Engineering,2004,28(9):49-51. |
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| Authors: | FU Hua |
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| Abstract: | The quench-cracking of 5CrMnMo alloy steel was studied by metallograph analysis and SEM. The results show that the high quench temperature and long hold time promoted formation of large Martensite microstructure inducing micro quencn-cracking of the steel; the low final cooling temperature during quenching induced a high quench-stress and quench-cracking. To resolve this problem,the heatreatment process has been changed to prevent the die from quench-cracking. |
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| Keywords: | hot forging die 5CrMnMo quenching cracking |
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