| 组合式气门锻模非正常开裂失效分析 |
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| 引用本文： | 蔡莲淑,石钟良,潘振鹏,陈德生,王桂棠,莫东强,纪现磊. 组合式气门锻模非正常开裂失效分析[J]. 金属热处理, 2001, 0(6): 35-37 |
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| 作者姓名： | 蔡莲淑 石钟良 潘振鹏 陈德生 王桂棠 莫东强 纪现磊 |
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| 作者单位： | 1. 广东工业大学材料学院,
2. 广东怀集汽车配件厂, |
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| 摘 要： | 气门锻模正常失效方式为磨损、压塌和冷热疲劳裂纹。本文介绍了组合式凹模的结构并进行了应力分析 ,指出非正常开裂的主要原因为预应力模套与锻模过盈配合量不足。结合气门锻模的特点 ,对凹模的预热、中间去应力退火及中途停工保温的实际操作进行了讨论
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| 关 键 词： | 气门 组合式锻模 开裂 失效分析 |
| 文章编号： | 0254－6051（2001）06－0035－03 |
| 修稿时间： | 2000-09-20 |
Failure Analysis on Anomalous Split of Combination Hot-forging Dies for Engine Valves |
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| CAI Lian-shu,Shi Zhong-liang,PAN Zhen-peng,CHEN De-sheng,WANG Gui-tang,MO Dong-qiang,JI Xian-lei. Failure Analysis on Anomalous Split of Combination Hot-forging Dies for Engine Valves[J]. Heat Treatment of Metals, 2001, 0(6): 35-37 |
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| Authors: | CAI Lian-shu Shi Zhong-liang PAN Zhen-peng CHEN De-sheng WANG Gui-tang MO Dong-qiang JI Xian-lei |
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| Affiliation: | CAI Lian shu 1,SHI Zhong liang 2,PAN Zhen peng 1,CHEN De sheng 2,WANG Gui tang 1,MO Dong qiang 2,JI Xian lei 1 |
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| Abstract: | The failure modes of the combination valve hot forging die in normal working condition are wear，collapse or cold hot fatigue crack．But the die would fail as split in some anomalous condition，mainly because of insufficient tolerance in the close fit between the die and the sleeve．This paper discuses the practical operation of die preheat，stress-relief-annealing and temperature holding during down time and their effects on split prevention． |
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| Keywords: | engine valve combination die split failure analysis |
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