厚壁钢管张力减径过程的变形规律研究  

Study on deformation rule during stretch reducing process of thick-wall tube

作　　者：李熹平[1] 林军[2] 

机构地区：[1]浙江师范大学工学院,浙江金华321004 [2]山东大学材料科学与工程学院,山东济南250061

出　　处：《锻压装备与制造技术》2012年第3期87-89,共3页China Metalforming Equipment & Manufacturing Technology

基　　金：浙江省自然科学基金资助项目(Q12E050025)

摘　　要：荒管壁厚和张力系数是张力减径工艺的重要参数,对成品钢管质量具有直接影响。针对20机架钢管张力减径过程建立热力耦合有限元模型,并选择9种不同壁厚的钢管进行数值模拟,得到了张力减径过程中金属的流动规律,研究讨论了钢管内多边形的形成机理,总结了荒管壁厚和张力系数对张力减径工艺的影响规律。Initial tube thickness and tension coefficient are important parameters in stretch reducing process, which could influence the product quality directly. The thermal-mechanical coupled finite clement models with nine initial tubes of different thickness have been established to simulate the process of 20-stand stretch reducing mill. The metal flow rules during the stretch reducing process and forming mechanism of internal polygon have been investigated systematically. The influence rule of initial tube thickness and tension coefficient to stretch reducing process has been summarized.

关 键 词：机械制造 钢管 张力减径 变形规律 热力耦合 有限元模拟 

分 类 号：TG356[金属学及工艺—金属压力加工]