钛合金面内弯曲板挤压成形的数值模拟与实验研究  

Numerical Simulation and Experimental Study on Extrusion of Titanium Alloy In-plane Bending Sheet

作　　者：王凌[1] 石磊[2,3] 张轲[1] 赵彩霞 WANG Ling;SHI Lei;ZHANG Ke;ZHAO Caixia(Luoyang Quality and Technical Supervision and Testing Center,Luoyang 471000,China;School of Material Science ＆ Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China;School of Material Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China)

机构地区：[1]洛阳市质量技术监督检验测试中心,河南洛阳471000 [2]洛阳理工学院材料科学与工程学院,河南洛阳471023 [3]河南科技大学材料科学与工程学院,河南洛阳471023

出　　处：《热加工工艺》2018年第17期117-120,125,共5页Hot Working Technology

基　　金：河南省自然科学基金项目(182300410208);中国博士后面上基金项目(2016M602238);河南省高等学校重点科研基金项目(17A430025);河南省科技攻关项目(172102210403)

摘　　要：通过有限元分析和实验研究了钛合金面内弯曲板挤压成形。实验验证了挤压力和工件的尺寸精度。分析了调控量对工件曲率半径的影响和速度分布。结果表明,面内弯曲板的曲率误差为0.86%,挤压力的峰值误差为10.49%;在模具结构中,工件曲率半径随调控量的增大而减小;在定径带处变形体呈非均匀性流动,工件的内外弧存在流速差是形成弯曲件的原因;在工作带横截面上,自内弧侧至外弧侧,流速呈线性增长,在焊合腔两端存在流动死区。The extrusion of titanium alloy in-plane bending plate was studied by finite element analysis and experiment.The extrusion pressure and dimensional accuracy of the workpiece were verified by experiments. The influence of the control quantity on the radius of curvature and the velocity distribution were analyzed. The results show that the curvature error of in-plane bending plate is 0.86% and the error of extrusion force peak is 10.49%. In the die structure, the curvature radius of the workpiece decreases with the increase of the control quantity. The deformable body flow in the fixed diameter zone is non-uniform, and the flow velocity difference between the internal and external arc of the workpiece is the reason for forming the bending part. The flow velocity of the alloy in the cross section of the working zone increases linearly from the inner arc to the outer arc, and there is a flow dead zone at both ends of the welding chamber.

关 键 词：面内弯曲 挤压 调控 钛合金 

分 类 号：TG379[金属学及工艺—金属压力加工]