冷轧工艺参数对TA18钛合金管材金属流动及成形载荷的影响规律  

The Influence Rule of Rolling Process Parameters on Metal Flow and Forming Load of TA18 Alloy Tube During Cold Rolling

作　　者：刘江林[1] 曾卫东[1] 杜子龙[1] 陶欢[1] 席锦会 舒滢 杨建朝 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072 [2]西部钛业有限责任公司,陕西西安710201

出　　处：《钛工业进展》2015年第3期21-25,共5页Titanium Industry Progress

基　　金：教育部"新世纪优秀人才支持计划"(NCET-07-0696);陕西省科技统筹创新工程计划项目(2012KTZB01-03)

摘　　要：管材周期式冷轧成形过程是一个复杂的减径、减壁过程,由于轧辊孔型复杂,轧制过程中管坯的塑性变形也较复杂,各种成形工艺参数的选择往往都是经长期实践经验积累得到的,对轧制过程缺乏规律性的认识及定量的分析。本研究则借助三维有限元软件DEFORM-3D再现了冷轧成形过程,对成形过程中金属的流动情况、管材的应力应变分布以及成形载荷进行了深入分析。结果表明:轧制速度和摩擦系数增大会引起径向拉应变和环向压应变减小,送进量增加则使得两者均增大。此外,送进量和摩擦系数增大会显著增加成形载荷。The cold rolling of tube is a complicated forming process that involves diameter and wall thickness reduction. The tube plastic deformation in the course of rolling process is also complicated due to the complex roll pass, so the basis of selection for rolling parameters is the long term practical experience rather than regularity results and quantitative analysis from the rolling process. This paper simulated the cold pilgering process by using the finite element software environment DEFORM-3D, then thoroughly analyzed the metal flow, strain distribution along the tube and forming load in the tube forming processes. The results show that radial tensile strain and circumferential compressive strain decrease with the increasing of rolling velocity and friction coefficient, while they both increase with the increasing of feed. What＇ s more, the increase of feed and friction coefficient result in the increasing of forming load.

关 键 词：TA18钛合金 管材 皮尔格轧制 有限元模拟 

分 类 号：TG339[金属学及工艺—金属压力加工]