差厚拼焊板方盒件在充液拉深过程中焊缝移动的研究  

Study on Weld-line Movement of Square Cups with Tailor-welded Blanks in Hydro-forming Deep Drawing

作　　者：祝海燕[1] 汪建敏[1] 姜银方[2] 许超超[3] 石磊[1] 余凯飞[1] 

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013 [2]江苏大学机械工程学院,江苏镇江212013 [3]江西上饶职业技术学院信息工程学院,江西上铙334109

出　　处：《热加工工艺》2009年第3期70-74,共5页Hot Working Technology

摘　　要：基于Dynaform分析软件,就差厚拼焊板充液拉深盒形件的压边力、液体压力及加载方式对焊缝移动的影响进行仿真与研究。结果表明,充液拉深时,薄、厚板两侧的压边力差值大小对盒形件底部的焊缝移动影响不大,而控制预胀形所形成的等效拉深筋高度,可有效地减小底部的焊缝移动量;同时,提高充液工作压力可显著减小侧壁焊缝的移动量。这一研究结果对指导拼焊板充液拉深具有现实的意义。Based on finite element simulation software Dynaform, the influence of process parameters such as blank holder force, liquid pressure and its loading paths on the weld-line movement in hydro-forming deep drawing of TWBs with different thickness Was simulated and investigated. The results show that, in hydro-forming deep drawing, the effect of the different holding force between thin and thick blank on the weld-line movement is not so much, while the bottom weld-line movement reduces effectiyely by controlling the hight of equivalent draw bead during pre-bulging and the weld-line movement of the side wall decreases significantly by increasing the working pressure in the die cavity. The results of this investigation have the practical significance to guide hydro-forming of TWBs.

关 键 词：差厚拼焊板 充液拉深 焊缝移动 压边力 数值模拟 

分 类 号：TG386[金属学及工艺—金属压力加工]