| 热锻模具的韧性要求 |
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| 引用本文： | 王树奇,崔向红.热锻模具的韧性要求[J].中国机械工程,2004,15(8):746-749. |
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| 作者姓名： | 王树奇 崔向红 |
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| 作者单位： | 1. 江苏大学材料科学与工程学院,镇江,212013
2. 吉林大学材料科学与工程学院,长春,130022 |
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| 基金项目： | 国家计划委员会产业化前期关键技术与成套设备研究开发项目 ( 19993 17) |
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| 摘 要： | 通过两类热锻模(精铸热锻模和锻造热锻模)的现场应用，分析热锻模的使用工况条件和失效机理，探讨了热锻模工况条件、失效形式、寿命与热锻模韧性的关系。结果表明：热锻模的脆性断裂是小能量多次冲击下的裂纹萌生、扩展至断裂，在热锻模生产和应用中不宜用冲击韧性作为韧性指标，片面地要求热锻模具有高的冲击韧性是不利的，锻模韧性要求应为多冲抗力，它是一定塑性的基础上以强度为主的韧性问题。
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| 关 键 词： | 热锻模 钢 韧性 冲击 断裂 |
| 文章编号： | 1004-132X(2004)08-0746-04 |
Toughness Requirements of Hot-forging Dies |
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| Wang Shuqi Cui Xianghong .Jiangsu University,Zhengjiang, .Jilin University,Changchun.Toughness Requirements of Hot-forging Dies[J].China Mechanical Engineering,2004,15(8):746-749. |
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| Authors: | Wang Shuqi Cui Xianghong Jiangsu University Zhengjiang Jilin University Changchun |
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| Affiliation: | Wang Shuqi 1 Cui Xianghong 2 1.Jiangsu University,Zhengjiang,212013 2.Jilin University,Changchun,130022 |
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| Abstract: | Through site-applications of hot-forging dies made by casting and forging, the operating modes and failure mechanisms were analyzed and the relations among operating modes, failure patterns, lifes and toughness of hot-forging dies were discussed. The results show that brittle fracture of hot-forging dies is in the course of initiation, propagation of crack, till fracture under low-energy multiple impact. Impact toughness is not suitable to take as toughness norm in the production and application of hot-forging dies. The excess requirements of hot-forging dies for high impact toughness is disadvantageous. The requirements of hot-forging dies for toughness should be the resistances to multiple impacts, which means strength-dominant toughness. |
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| Keywords: | hot-forging die(steel) toughness impact fracture |
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