Lubricant-free deep drawing using CO2 and N2 as volatile media injected through laser-drilled microholes

被引：8

作者：

Zahedi, Ehsan ^{[1
]}

Woerz, Christoph ^{[2
]}

Reichardt, Gerd ^{[2
]}

Umlauf, Georg ^{[3
]}

Liewald, Mathias ^{[2
]}

Barz, Jakob ^{[3
]}

Weber, Rudolf ^{[1
]}

Foerster, Daniel J. ^{[1
]}

Graf, Thomas ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Strahlwerkzeuge, Pfaffenwaldring 43, D-70569 Stuttgart, Germany

[2] Univ Stuttgart, Inst Met Forming Technol, Holzgartenstr 17, D-70174 Stuttgart, Germany

[3] Fraunhofer IGB, Fraunhofer Inst Interfacial Engn & Biotechnol, Nobelstr 12, D-70569 Stuttgart, Germany

来源：

MANUFACTURING REVIEW | 2019年 / 6卷

关键词：

Deep drawing; laser micro machining; drilling;

D O I：

10.1051/mfreview/2019011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Most metal forming processes use lubricants based on mineral oils as an intermediate medium to reduce friction and wear. To avoid the well-known drawbacks of oil lubrication, a novel and environment friendly lubrication system for deep-drawing processes was demonstrated at the University of Stuttgart. Liquid carbon dioxide and gaseous nitrogen are being used as volatile lubrication during the deep-drawing process, locally injected at high pressure through laser-drilled microholes. This new tribological system provides a significantly enlarged working range and at least 15% larger drawing depths compared to conventional oil lubrication.

引用

页数：11

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