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帅美荣,刘昊,李海滨,黄志权,黄庆学.基于“多线段三角孔型系统”轧制TC4合金棒材变形特征研究[J].稀有金属材料与工程(英文),2017,46(10):2770~2774.[SHUAI Meirong,LIU Hao,LI Haibin,HUANG Zhiquan and HUANG Qing-xue.Deformation Feature of TC4 Rod Based on Multi-line Triangle Pass System[J].Rare Metal Materials and Engineering,2017,46(10):2770~2774.]
Deformation Feature of TC4 Rod Based on Multi-line Triangle Pass System
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Received:October 13, 2015  Revised:April 15, 2016
Key words: TC4 rod  multi-line triangle pass  rolling stability  temperature distribution
Foundation item:山西省自然科学基金研究项目(2014011026-1);校博士启动基金项目(20122037)
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SHUAI Meirong,LIU Hao,LI Haibin,HUANG Zhiquan and HUANG Qing-xue  
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      The rapid increase of the demand for titanium and titanium alloy rods with high strength and fine ductility results in the necessity to develop a multi-roller mill and a hot continuous rolling process. In this study, the authors propose to produce TC4 alloy rod on Y-type mill with a multi-line triangle-round pass system. The deformation feature, rolling stability, and temperature distribution of TC4 alloy rod during the hot continuous rolling process are simulated with ANSYS software. The experiments are also conducted on Y-type mill. The results show that the multi-line triangle pass with concavity has a good centrality. Thus, the system can prevent TC4 rod to twist or deviate from the rolling direction, and the stability of the rolled rod can be improved. Compared with the conventional flat triangle-round pass system, the proposed pass system obviously decreases the temperature gradient along the cross section of TC4 rod, thereby reducing the possibility of surface cracking, and improving the surface quality of the final product.