楔横轧一次楔成形极限断面收缩率实验研究  

Experimental study on limit-section shrinkage of one wedge in cross wedge rolling

作　　者：汤先岗[1] 张康生[1] 贾震[1] 胡正寰[1] 

机构地区：[1]北京科技大学机械工程学院,北京100083

出　　处：《锻压技术》2008年第4期63-66,共4页Forging & Stamping Technology

基　　金：高等学校博士学科点专项科研基金项目(20050008024);国家自然科学基金资助项目(50575023;50435010);国家科技支持计划项目(2006BAF04B03)

摘　　要：为了探索工艺参数对楔横轧一次楔成形极限断面收缩率的影响规律,进行了实验研究,发现一次楔成形断面收缩率最大可达97.75%。用软件Origin,SPSS对数据进行分析,揭示了极限断面收缩率随成形角α、展宽长度K的增大而减小,随展宽角β的增大而增大的规律,并发现展宽角β对极限断面收缩率的影响最为显著。研究结果拓宽了楔横轧加工界限,为改进楔横轧模具设计提供一定依据。In order to study the relation between the limit-section shrinkage of one wedge in cross wedge rolling and the different mechanical parameters, the experiment under different mechanical parameters was made. During the progress of study, the limit-section shrinkage reached 97.75% without necking wrong. Then by using the software Origin, SPSS to analyze the data, the rules were found. When the forming angle a and the spacing of wedges K increase, the limit-section shrinkage decreases, when the spreading angle β increases, the limit-section shrinkage increases too, and the spreading angle β is the most important mechanical parameter to affect the limit-section shrinkage. The study result widens the limit of the cross wedge rolling, and which also gives a lot of gist to improve the design of mould.

关 键 词：楔横轧 极限断面收缩率 一次楔入 

分 类 号：TG335[金属学及工艺—金属压力加工]