基于“多线段三角孔型系统”轧制TC4合金棒材变形特征研究（英文）  

Deformation Feature of TC4 Rod Based on Multi-line Triangle Pass System

作　　者：帅美荣[1,2] 刘昊 李海滨 黄志权[2] 黄庆学 

机构地区：[1]太原科技大学,山西太原030024 [2]山西省冶金设备设计理论与技术重点实验室,山西太原030024

出　　处：《稀有金属材料与工程》2017年第10期2770-2774,共5页Rare Metal Materials and Engineering

基　　金：Province Natural Science Research Program of Shanxi(2014011026-1);Doctor Startup Project of School(20122037)

摘　　要：随着对高强度,高延展性钛及钛合金棒材的迅速需求,开发有色金属棒材多辊热连轧技术是非常必要的。本研究在Y型三辊轧机上采用"多线段三角-圆"孔型系统生产钛合金棒材。采用ANSYS有限元软件模拟了TC4棒材在热连轧过程中的变形特征,轧制稳定性及温度分布;并在Y型连轧机上进行了试验验证。结果表明:带有凹面状的"多线段三角"孔型具有良好的对中性,能有效阻止轧件扭转或偏离轧制中心线,提高棒材轧制稳定性;此外,相对于"平三角-圆"孔型系统,采用这种孔型轧制棒材,显著降低了TC4合金棒材横截面的温度梯度,从而减少产品表面裂纹,提高表面质量。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 proposed 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 were simulated with ANSYS software. The experiments were 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 from twisting or deviating 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.

关 键 词：TC4棒材 多线段三角孔型 轧制稳定性 温度分布 

分 类 号：TG339[金属学及工艺—金属压力加工]