薄壁高矩形金属食品罐多道次拉深工艺设计  

Multi-pass drawing process design on thin-walled high rectangle metal food can

作　　者：黄珍媛[1] 谭朋朋 李超[1] Huang Zhenyuan;Tan Pengpeng;Li Chao(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510641

出　　处：《锻压技术》2021年第7期40-45,共6页Forging & Stamping Technology

摘　　要：为满足轻量化和大容量的需求,薄壁、高矩形形状成为了金属食品罐制品的发展趋势,同时也加大了食品罐罐身多道次拉深工艺设计的难度。针对某薄壁高矩形金属食品罐制品,根据均匀变形理论和K值法,以椭圆形过渡的方法设计了3道次拉深工艺方案:第1道次和第2道次拉深均采用椭圆过渡形状,第3道次拉深成形高矩形件,并确定了每道次制品的过渡形状;然后,运用数值模拟仿真技术对每道次的成形极限图和减薄率进行分析,3次拉深后的最终减薄率为15.4%,并评估了所设计工艺方案的可行性;最后,通过生产实践进一步证明,使用该工艺方案所生产的金属食品罐质量良好,试制样品长、短侧壁部分的减薄率与模拟预测结果基本一致,表明所设计的3道次拉深工艺方案可行,所应用的设计方法在生产实际中具有一定的应用价值。In order to meet the needs of light weight and large capacity,thin wall and high rectangular shape have become the develop-ment trend of metal food can,and it also increases the difficulty of multi-pass deep drawing process design for food can body.Therefore,for a thin-walled high rectangle metal food can,a three-pass drawing process scheme that the elliptical transition shape was adopted in the first-pass and second-pass drawing and the high rectangle part was formed in the third-pass drawing was designed by the method of ellipti-cal shape transition according to the uniform deformation theory and K value method,and the transition shape of each pass product was de-termined.Then,the forming limit diagram and the thinning rate of each pass were analyzed by numerical simulation technology,the final thinning rate was 15.4%after three-pass drawing,and the feasibility of the process scheme designed was evaluated.Finally,the produc-tion practice shows that the quality of the metal food can produced by the process scheme is good,and the thinning rate of the long and short sidewalls for the trial sample is basically consistent with the results of simulation prediction.Thus,the designed three-pass drawing process is feasible,and the applied design method has certain application value in the actual production.

关 键 词：薄壁 高矩形 食品罐 拉深工艺 椭圆形过渡 

分 类 号：TG386[金属学及工艺—金属压力加工]