背门内板窗框开裂与改善  

Crack problem and improvement of automobile lift door inner panel window frame

作　　者：吴磊[1,2] 

机构地区：[1]宝山钢铁股份有限公司研究院,上海201900 [2]汽车用钢开发与应用技术国家重点实验室(宝钢),上海201900

出　　处：《模具工业》2014年第3期63-66,共4页Die & Mould Industry

摘　　要：针对背门内板窗框常见开裂问题,分析了背门内板窗框变形特征和成形过程中材料变薄、开裂的原因。基于有限元仿真模型,研究了工艺孔尺寸和刺破工艺对拉深破裂的影响,并提出了工艺调整方案,最后通过现场生产验证了分析结果的准确性和修模方案的有效性。In view of the common crack problem of window frmnein automobile lift door in ner panel, analysis was made on the deformation features and the causes of material＇s thin ning and window frame＇s cracking. Based on the FEM model, the influence of auxiliary hole size and piercing process on the drawing crack was systematically investigated; and the improvement plans were presented.

关 键 词：背门内板 冲压 破裂 改善 

分 类 号：TG386[金属学及工艺—金属压力加工]