成形角对楔横轧二次楔轧制心部缺陷的影响  

Effect of forming angle on central defect of twice cross wedge rolling

作　　者：蔡亚宁[1] 张康生[1] 娄依志[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3期68-71,共4页Forging & Stamping Technology

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

摘　　要：为了研究工艺参数对楔横轧大断面收缩率二次楔轧制轴类零件心部缺陷的影响规律,进行了楔横轧二次楔轧制试验,得到一系列在不同工艺参数下的轧件中心孔洞面积数据,利用软件MATLAB对数据进行分析处理。揭示出成形角对孔洞面积大小的影响规律:当两个成形角α1,α2中一个较小时,轧件心部孔洞面积随着另一个的增大而明显减小;并且二次楔成形角α2对轧件心部缺陷的影响程度稍大于一次楔成形角α1。研究结果为楔横轧模具、轧机的设计提供了一定的参考。In order to study the effect rules of the technological parameters on the central defect of the heavy section shrinkage twice cross wedge rolling axis accessories, the experiment of twice cross wedge rolling was carried out. A series of area data of the centre holes inside the mill bars under different technological parameters was gained. The effect rules of the forming angle on the areas of the centre holes was found out using MATLAB to analyze the data： when one of the two wedge forming angles α1 and α2 is small, the hole area reduces obviously along with the increasing of the other wedge forming angle. The extent of α2 is a little bit larger than that of α1. This result can be a reference for designing the moulds and rolling mills.

关 键 词：楔横轧 大断面收缩率 二次楔 成形角 心部缺陷 

分 类 号：TG335[金属学及工艺—金属压力加工]