| GH4169合金管材正挤压工艺优化的数值模拟 |
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| 引用本文： | 王珏,董建新,张麦仓,郑磊,信继军.GH4169合金管材正挤压工艺优化的数值模拟[J].北京科技大学学报,2010,32(1). |
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| 作者姓名： | 王珏 董建新 张麦仓 郑磊 信继军 |
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| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京,100083
2. 中油吉林化建工程股份有限公司,吉林,132021 |
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| 基金项目： | 国家自然科学基金和上海宝钢集团公司联合资助重点项目(No.50831008) |
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| 摘 要： | 结合GH4169在不同温度、应变速率下的真应力-应变曲线,应用Msc.Superform有限元软件对GH4169合金管材正挤压进行了数值模拟,系统分析讨论不同挤压参数对挤压过程的影响.结果表明:GH4169合金管材可以通过热正挤压成形,当挤压速度为100 mm.s-1和300 mm.s-1,模角为20～30°,坯料预热温度为1040～1 050℃时,以及在良好的润滑条件下可以获得优化可控的挤压工艺.
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| 关 键 词： | 高温合金 热挤压 管材 数值模拟 |
Numerical simulation for optimization of the extrusion process of GH4169 tubes |
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| WANG Jue,DONG Jian-xin,ZHANG Mai-cang,ZHENG Lei,XIN Ji-jun.Numerical simulation for optimization of the extrusion process of GH4169 tubes[J].Journal of University of Science and Technology Beijing,2010,32(1). |
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| Authors: | WANG Jue DONG Jian-xin ZHANG Mai-cang ZHENG Lei XIN Ji-jun |
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| Abstract: | The hot extrusion process of GH4169 superalloy tubes was simulated by using Msc.Superform software with the true flow stress-true strain curves of GH4169 alloy at different temperatures and strain rates. The effects of technical parameters on the extrusion processing were systematically analyzed to optimize the extrusion process. The results show that high quality products can be expected using forward extrusion. The optimal parameters are the extrusion speed of 100 and 300 mm·s~(-1), the die angle of 20 to 30°, the billet preheating temperature of 1 040 to 1 050 ℃ and a better lubrication condition. |
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| Keywords: | high-temperature alloys hot extrusion tubes numerical simulation |
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