22MnB5超高强度钢冷冲压成形的数值模拟  

Numerical Simulating on Cold Stamping of 22MnB5 Ultra-high Strength Steel

作　　者：李琦 纪沙沙 刘永刚[2] 谷海容[2] 王章忠[3] 吕学鹏 LI Qi;JI Sha-sha;LIU Yong-gang;GU Hai-rong;WANG Zhang-zhong;LV Xue-peng(Nanjing Starq-Ytec Automobile Parts Co., Ltd., Jiangsu Nanjing 211100;Maanshan Iron & Steel Co., Ltd., Liaoning Maanshan 243003;School of Materials Science and Engineering, Nanjing Institute of Technology, Jiangsu Nanjing 211167, China)

机构地区：[1]南京星乔威泰克汽车零部件有限公司,江苏南京211100 [2]马鞍山钢铁股份有限公司,辽宁马鞍山243003 [3]南京工程学院材料工程学院,江苏南京211167

出　　处：《广州化工》2019年第13期83-84,103,共3页GuangZhou Chemical Industry

摘　　要：超高强度钢冷冲压成形技术在汽车领域的应用越来越广泛。以22MnB5超高强度钢U形件为研究对象,采用Dynaform软件对U形件进行了有限元模型建立和数值仿真,研究了摩擦系数和压边力对工件冷成形过程中回弹量的影响,并建立了回弹量与摩擦系数和压边力的数学模型,回弹量与摩擦系数呈反比例关系,与压边力呈二次函数关系,这对超高强度钢冷成形工艺方案的制定提供理论指导。Ultra-high strength steel cold stamping forming technology is more and more widely used in the automotive field. The forming process of U-bend parts of 22MnB5 ultra-high strength steel was studied. Dynaform software was used to simulate the U-bend parts by the finite element model and numerical simulation. The influence of process parameters such as friction coefficient and blank holding force on the springback of cold forming process was studied. The mathematical models of springback and friction coefficient were established. The springback was inversely proportional to the friction coefficient, and was quadratic function to the blank holding force, which can provide theoretical guidance for the formulation of cold forming process.

关 键 词：超高强度钢 Dynaform软件 回弹 

分 类 号：TG316.3[金属学及工艺—金属压力加工]