| 单键拉刀早期断裂分析 |
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| 引用本文： | 许媛. 单键拉刀早期断裂分析[J]. 理化检验(物理分册), 1999, 35(9): 414-415 |
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| 作者姓名： | 许媛 |
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| 作者单位： | 贵阳工具厂 贵阳550003 |
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| 摘 要： | 对断裂单键拉刀进行了化学成分分析、硬度测定和金相检验，严重的碳化物带状偏析，使拉刀产生局部淬火过烽回火不足，造成内应力急剧增高，最终导致拉刀断裂。
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| 关 键 词： | 高速钢 碳化物 断裂 拉刀 单键拉刀 |
ANALYSIS ON EARLIER FRACTURE OF KEYWAY BROACH |
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| Xu YuanGuiyang tool works. ANALYSIS ON EARLIER FRACTURE OF KEYWAY BROACH[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 1999, 35(9): 414-415 |
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| Authors: | Xu YuanGuiyang tool works |
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| Affiliation: | Xu YuanGuiyang tool works |
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| Abstract: | The failed keyway broach was analysed by chemical analysis, hardness testing and metallograph-ic examination. It was found that the broach was locally overheated due to band segregation of carbide, and under-tempered. These factors caused fracture of broach as a result of high internal stress. |
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| Keywords: | High speed steel Carbide Fracture |
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