| 三辊楔横轧应力应变场对内部缺陷的影响 |
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| 引用本文： | 杨翠苹,张康生,刘晋平,胡正寰.三辊楔横轧应力应变场对内部缺陷的影响[J].北京科技大学学报,2006,28(5):464-467. |
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| 作者姓名： | 杨翠苹 张康生 刘晋平 胡正寰 |
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| 作者单位： | 北京科技大学机械工程学院,北京,100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 采用有限元数值模拟方法,比较分析了三辊楔横轧与两辊楔横轧轧件内部缺陷的产生几率和存在形式. 根据轧件内部的应力应变状态,阐述了三辊轧制轧件中心点缺陷产生可能性较小和断裂呈环向裂纹的原因. 分析表明,三辊楔横轧轧制工艺在轧件心部成形质量上具有明显的优势.
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| 关 键 词： | 楔横轧 内部缺陷 有限元 应力 应变 三辊楔横轧 应力应变场 内部缺陷 影响 rolling wedge cross during defects 优势 成形质量 轧制工艺 分析表 环向裂纹 断裂 点缺陷 中心 三辊轧制 阐述 应变状态 |
| 收稿时间： | 2005-03-22 |
| 修稿时间： | 2005-10-18 |
Internal defects in rolled pieces during three-roll cross wedge rolling |
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| YANG Cuiping,ZHANG Kangsheng,LIU Jinping,HU Zhenghuan.Internal defects in rolled pieces during three-roll cross wedge rolling[J].Journal of University of Science and Technology Beijing,2006,28(5):464-467. |
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| Authors: | YANG Cuiping ZHANG Kangsheng LIU Jinping HU Zhenghuan |
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| Institution: | Mechanical Engineering School, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | The occurrence probability and existence form of internal defects in rolled pieces during threeroll and two-roll cross wedge rolling were compared and analyzed by finite element numerical simulation. The reason that the internal defects little occur at the center points and fissure takes an annular form during three-roll rolling was expounded based on the state of stress and strain at the center of rolled pieces. It is indicated that three-roll cross wedge rolling process has a distinct advantage in the forming quality of the center of rolled pieces. |
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| Keywords: | cross wedge rolling internal defects finite element stress strain |
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