1100-H14铝合金板冷冲锻成形过程的有限元模拟  

FEM simulation for forming process of cold press forging of 1100-H14 aluminum alloy sheets

作　　者：王可胜[1,2] 刘全坤[2] 张德元[2] 

机构地区：[1]宁波工程学院机械学院,宁波315016 [2]合肥工业大学材料科学与工程学院,合肥230009

出　　处：《中国有色金属学报》2010年第2期318-322,共5页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(50575097);安徽省教育厅自然科学研究基金资助项目(KJ2007A062)

摘　　要：金属板材冷冲锻成形是近年来发展起来的复合成形新技术,其特点是板材冲锻时不但完成零件形状的成形,还兼有局部结构的体积成形,如凸柱成形。针对带有凸柱的散热板基座,通过对1100-H14铝合金板材冷冲锻成形有限元模拟,探讨坯料厚度、坯料形状、摩擦因数及模具结构对凸柱成形的影响规律。结果表明:坯料越厚,越有利于凸柱成形;摩擦因数越大,越有利于凸柱成形;圆形坯料形状及带有背压的模具结构有利于凸柱成形。模拟结果与实验结果吻合。Cold press forging forming of sheet metals is a new technology for complex forming, developed in recent years. During press forging the sheet, it has the features that not only the geometries of the part can be shaped, but also local structures like embossment can be formed simultaneously. In order to shape a heat sink base with embossment, the forming process of cold press forging of 1100-H14 aluminum alloy sheet was simulated based on the finite element method, and the blank thickness, blank shape, friction coefficient and die structure on the embossment forming were studied. The results show that the thicker the blank is, the better the embossment can be formed, and also the greater the friction coefficient is, the better the embossment can be done. Meanwhile, the cylindrical blank and tooling structure with counter pressure can be helpful to the form of embossment as well. The simulation results are in good agreement with the experimental data.

关 键 词：凸柱 冲锻成形 有限元 模具设计 

分 类 号：TG376[金属学及工艺—金属压力加工] TG386