锻压技术

用于管件电磁缩径的螺旋槽集磁器结构参数研究

英文标题：Research on structural parameters of spiral groove field shaper for electromagnetic reduction of tube

作者：王哲峰姜孔明高铁军

分类号：TG391

出版年,卷(期):页码：2018,43(12):44-49

摘要：

集磁器是管件电磁缩径成形的重要工装之一，为了分析螺旋槽集磁器结构参数对紫铜管件成形性能的影响，利用松散耦合法对紫铜管件缩径变形进行仿真，分析了螺旋槽集磁器内外径比D/d、总高度H和内台肩高度h对管件成形性能的影响。结果表明：内外径比与径向电磁力的大小和作用时间有关，恰当的集磁器外径与内径可使管件径向变形量达到最大；总高度对工装的涡流损耗有较大影响，总高度越大，涡流损耗越大，管件径向变形量越小；内台肩高度对管件径向变形量和成形区域长度均有较为明显的影响，内台肩高度越大，作用于管件上的电磁力密度越大，电磁力越集中，管件的径向变形量越大。

The field shaper is one of the important tools for electromagnetic reduction forming of tube. In order to analyze the influence of structural parameters of spiral groove field shaper on the forming performance of copper tube, the reduction deformation of copper tube was simulated by the loose coupling method, and the influences of the ratio of outer diameter to inner diameter D/d, the total height H and the inner shoulder height h of spiral groove field shaper on the forming performance of tube were analyzed. The results show that the ratio of outer diameter to inner diameter is related to the magnitude and action time of the radial electromagnetic force, and the proper outer diameter and inner diameter of spiral groove field shaper can maximize the radial deformation of tube. The total height has a great influence on the eddy current loss of tool. The larger the total heigh is, the larger the eddy current loss is, and the smaller the radial deformation of tube is. The inner shoulder height has a significant influence on the radial deformation of tube and the length of forming area. The greater the inner shoulder height is, the greater the electromagnetic force density acting on tube is, the more concentrated the electromagnetic force is, and the greater the radial deformation of tube is.

基金项目：

基金项目:国家自然科学基金资助项目（51205260）

作者简介：王哲峰（1970-），男，博士，副教授，硕士生导师 Email：632739228@qq.com 通讯作者：姜孔明（1993-），男，硕士研究生 Email：kongming_jiang@163.com

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