| IN690合金管热挤压温升与挤压力的研究 |
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| 引用本文： | 孙朝阳,刘斌,李瑞,张清东.IN690合金管热挤压温升与挤压力的研究[J].材料科学与工艺,2011,19(4):52-58. |
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| 作者姓名： | 孙朝阳 刘斌 李瑞 张清东 |
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| 作者单位： | 北京科技大学机械工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50831008) |
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| 摘 要： | 温升和挤压力是影响钢管挤压过程的重要指标,利用热模拟实验获得了IN690合金的热加工本构关系,建立了IN690合金钢管热挤压过程的有限元模型.采用正交实验设计的仿真实验系统分析了坯料温度（T b=1000～1200℃）、挤压速度（v=20～200 mm/s）和模具预热温度（T d=300～500℃）对管材成形过程中温升...
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| 关 键 词： | 高温合金 管材热挤压 温升 挤压力 |
The temperature rise and extrusion force of IN690 superalloy during tube hot extrusion process |
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| SUN Chao-yang,LIU Bin,LI Rui and ZHANG Qing-dong.The temperature rise and extrusion force of IN690 superalloy during tube hot extrusion process[J].Materials Science and Technology,2011,19(4):52-58. |
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| Authors: | SUN Chao-yang LIU Bin LI Rui and ZHANG Qing-dong |
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| Affiliation: | SUN Chao-yang,LIU Bin,LI Rui,ZHANG Qing-dong(School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083,China,) |
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| Abstract: | In this paper,based on the constitutive relationship obtained by isothermal compression,a finite element model of hot extrusion of IN690 superalloy tube was established.The effect of billet temperature(T b = 1000～1200℃),extrusion speed(v=20～20 mm/s)and die preheating temperature(T d =300～500℃) on the temperature rise and extrusion force during tube hot extrusion process was investigated by using orthogonal experimental design method.The results show that the billet temperature takes the greatest impact on temperature rise and the extrusion force,followed by extrusion speed and the die preheat temperature.The optimal process parameters are:T b =1200℃,v=20 mm/s,T d =300℃,and the error is less than 8%. |
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| Keywords: | super-alloy tube hot extrusion temperature rise extrusion force |
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