| 带背压等径角挤压挤压力上限解析 |
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| 引用本文： | 李永志,薛克敏,李萍. 带背压等径角挤压挤压力上限解析[J]. 塑性工程学报, 2011, 18(2). DOI: 10.3969/j.issn.1007-2012.2011.02.006 |
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| 作者姓名： | 李永志 薛克敏 李萍 |
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| 作者单位： | 1. 合肥工业大学材料科学与工程学院,合肥230009;九江学院机械与材料工程学院,九江332005
2. 合肥工业大学材料科学与工程学院,合肥,230009 |
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| 基金项目： | 国家自然科学基金资助项目，霍英东教育基金资助项目，安徽省优秀青年科技基金资助项目 |
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| 摘 要： | 等径角挤压过程中施加背压,可以有效地改善材料微观组织和力学性能。运用上限理论推导出了带背压等径角挤压的挤压力解析式,结合实验进行验证,分析了背压作用的影响因素及背压效果,为等径角挤压的工艺优化、背压施加方式、模具设计及设备选择,提供了可行的方法。
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| 关 键 词： | 等径角挤压 背压 上限解 挤压力 |
An upper-bound solution to extrusion force of equal channel angular pressing with back pressure |
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| LI Yong-zhi,XUE Ke-min,LI Ping. An upper-bound solution to extrusion force of equal channel angular pressing with back pressure[J]. Journal of Plasticity Engineering, 2011, 18(2). DOI: 10.3969/j.issn.1007-2012.2011.02.006 |
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| Authors: | LI Yong-zhi XUE Ke-min LI Ping |
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| Affiliation: | LI Yong-zhi1,2 XUE Ke-min1 LI Ping1(1.School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009 China)(2.School of Mechanical and Materials Engineering,Jiujiang University,Jiujiang 332005 China) |
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| Abstract: | Applying back pressure during equal channel angular pressing(ECAP) may improve the process for better control of microstructure and property,An upper-bound solution to extrusion force of equal channel angular pressing with back pressure during a single pass was derived and verified with experiments.The effecting factors and effect of back pressure were discussed.The results provide a feasible method for ECAP process optimization,tooling design and equipment selection. |
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| Keywords: | equal channel angular pressing(ECAP) back-pressure upper-bound solution extrusion force |
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