您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    No. 3    June 2009

[PDF Download]    [Flash Online]

    

Use of nitrogen gas in high-speed milling of Ti-6Al-4V
KE Ying-lin(柯映林)1, 2, DONG Hui-yue(董辉跃)1, LIU Gang(刘 刚)1, ZHANG Ming(章 明)1

1. Zhejiang Provinvicial Key Laboratory of Advanced Manufacturing Technology, Zhejiang University,
Hangzhou 310027, China;
2. State Key Laboratory of Fluid Powder Transmission and Control, Zhejiang University,
Hangzhou 310027, China

Abstract:To inhibit chips burning in the high-speed cutting of Ti-6Al-4V, nitrogen gas with 0.7 MPa pressure was ejected at the milling zone. The high speed flowing of nitrogen gas speeds up the chips leaving, and prevents the chips from burning at the same time. By this method the cutting force is reduced. Especially, the temperature increment of the finished surface is smaller than 5 ℃. This prevents the increase of hardness, improves the roughness of the finished surface, and reduces the tools wear. Comparing and analyzing the morphology and color of chips, which are obtained from the high-speed machining of Ti-6Al-4V with and without nitrogen gas ejection, show the action mechanism of nitrogen gas during the high-speed machining of titanium alloy, and it is concluded that nitrogen gas can be used to realize the proper high-speed milling of Ti-6Al-4V titanium alloy.

 

Key words: Ti-6Al-4V; high-speed machining; burning; nitrogen gas

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn