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半轴套管精密挤压成形新工艺及应用
英文标题:Novel precision extrusion process of axle sleeve and its application
作者:郭永强 徐春国 崔继红 任广升 任伟伟 陈钰金 
单位:北京机电研究所 河北钢铁技术研究总院 
关键词:半轴套管 精密挤压 成形缺陷 
分类号:TG316;TG335
出版年,卷(期):页码:2012,37(6):12-15
摘要:

针对内部多台阶并且精度尺寸要求高的半轴套管,本文提出了镦粗、反挤压杯形、冲孔正挤压及扩孔整形的成形新工艺,并进行了实际生产。对新工艺开发过程中出现的圆角充不满、连皮无法完全冲出以及底部裂纹或折叠等缺陷产生的原因进行了分析,提出了相应的解决措施:通过增加2mm正挤压件上端尺寸,实现了圆角充满;利用有限元数值模拟确定了连皮冲不掉的原因,并通过提高反挤压工序的设备吨位解决了此问题;通过对挤压件设置追踪点反向追踪缺陷位置,完成裂纹缺陷的处理。

A new process including upsetting, backward extrusion of cupshaped, forward extrusion with piercing , reaming and sizing was proposed for axle sleeve that has multiple inner steps and high precision requirements, and the process had been used in real production. Furthermore, the reasons of defects, such as under filling of fillet, the situation that the web could not be completely pierced and the crack appeared at the bottom during in the development of this novel process were analyzed. The corresponding solutions were put forward as follows. The fillet was fully filled by increasing 2 mm in length at the top of part. By using FEM the web could be completely pierced by improving press load of backward extrusion process. The crack defect location was founded by setting tracking points in the numerical simulation; therefore, the crack defect was completely resolved.

基金项目:
国家自然科学基金资助项目(51075024);国家高技术研究发展计划资助项目(2012AA040202)
作者简介:
参考文献:


[1]中国机械工程学会.中国机械工程技术路线图[M].北京:中国科学技术出版社,2011.
[2]任广升,徐春国.半轴套管快捷精密挤压成形工艺[P].中国, 0029774.3.2008.11.12.
[3]任广升,白志斌.复合挤压变形的模拟研究[J]. 中国机械工程,1994,30(1):56-62.
[4]范建文,吴诗淳,李淼泉.外径不等杯一杯型复合挤压过程的数值模拟[J].机械科学与技术,1998,1(17):91-93.
[5]郭永强,徐春国,任广升,等. 挤压缩口工艺中缺陷的研究[J].锻压技术,2011,36(2):144-147.
[6]中国机械工程学会锻压学会. 锻压手册:第1卷[M].北京:机械工业出版社,1993.
[7]任广升,胡亚民,付传锋. 模具型腔挤压成型技术[M]. 北京:机械工业出版社,2009.


 

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