Investigation on Temperature Change of Cold Magnesium Alloy Strips Rolling Process with Heated Roll |
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Authors: | Hai-liang Yu Qing-bo Yu Jin-wu Kang Xiang-hua Liu |
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Affiliation: | 1. School of Mechanical, Materials & Mechatronic Engineering, University of Wollongong, Wollongong, NSW, 2500, Australia 2. Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China 3. Mechanical and Electronic Engineering College, Xuzhou Institute of Technology, Xuzhou, 221008, China 4. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110004, China
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Abstract: | Magnesium alloy strips are widely used in aerospace, automotive industry, etc., which are difficult to produce through cold forming process due to their poor deformation ability. In this article, we studied whether the rolling process with heated roll could be used to roll cold magnesium alloy strips. Thermal-mechanical finite element simulation of the rolling process, using heated roll and cold strips to produce the magnesium alloy strips, was carried out. Influences of roll temperature, rolling velocity, rolling reduction ratio, and initial strip thickness on the thermal field and the mean temperature of magnesium alloy strips were analyzed. Both the heated area in strips in rolling deformation zone and the mean temperature of strips at exit of rolling deformation zone increase with increasing the roll temperature and/or rolling reduction ratio, and/or with decreasing the rolling velocity and/or initial strip thickness. Finally, a formula was developed to predict the mean temperature of strips under different rolling conditions, which also could be used to calculate the critical value of parameters in rolling process. |
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