| 齿轮轴轴心晶间裂纹的产生与预防 |
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| 引用本文： | 程里,程方.齿轮轴轴心晶间裂纹的产生与预防[J].锻压技术,2005,30(5):7-8. |
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| 作者姓名： | 程里 程方 |
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| 作者单位： | 1. 重庆重型铸锻厂,重庆,400083
2. 重庆邮电学院,重庆,400065 |
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| 摘 要： | 通过对方型铸锭结构和锻造过程的应力应变分析，得出齿轮轴在锻造生产中产生贯通性轴心晶间裂纹的主要原因是源于锻造镦方时对脆弱界面的撕裂及平砧拔长锻制棒材时对缺陷的扩展。因此采用八棱形钢锭锻造齿轮轴，并采取上下V形砧拔长圆坯的方式可以有效地防止轴心晶问裂纹的出现。
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| 关 键 词： | 齿轮轴 方钢锭 脆弱结晶界面 轴心晶间裂纹 |
| 文章编号： | 1000-3940（2005）05-0007-02 |
| 收稿时间： | 2004-10-08 |
| 修稿时间： | 2004年10月8日 |
Formation and prevention of gear axes crystal boundary crack |
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| CHENG Li,CHENG Fang.Formation and prevention of gear axes crystal boundary crack[J].Forging & Stamping Technology,2005,30(5):7-8. |
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| Authors: | CHENG Li CHENG Fang |
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| Affiliation: | 1. Chongqing Heavy-Duty Casting and Forging Plant, Chongqing 400083, China; 2. Chongqing University of Post and Telecommunications, Chongqing 400065, China |
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| Abstract: | Gear axes appears cracks in crystal boundary in forging production. The reasons are found out that the cleavage brittleness is laniated in upset forging and defect is enlarged on the plane anvil forging by analyzing the structure of square steel ingot and forging stress and strain. The octahedron steel ingot and V-anvil forging bar can effectively prevent cracks in crystal boundary. |
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| Keywords: | gear axle square steel ingot cleavage brittleness cracks in crystal boundary |
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