Size effect on friction in scaled down strip drawing

被引：0
作者：
Bin Guo
Feng Gong
Chunju Wang
Debin Shan
机构：
[1] Harbin Institute of Technology,School of Materials Science and Engineering
[2] Harbin Institute of Technology,Key Laboratory of Micro
来源：
Journal of Materials Science | 2010年 / 45卷
关键词：
Friction Coefficient; Deep Drawing; Petroleum Jelly; Real Contact Area; Extrusion Force;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Friction conditions have important influence on the metal forming process. This is even more significant in microforming because of size effect. Friction size effect was studied in this paper. The specimen material was copper alloy T2 which was thermally treated at 873 K for 12 h in nitrogen atmosphere. The specimens were manufactured by wire cutting with initial width of 8, 4, 2, and 1 mm, and length of 80 mm. The experiments were carried out at room temperature on a universal testing machine under four kinds of lubrication conditions. The results showed the friction size effect was not found without lubrication. However, the friction size effect took place when lubricated with soybean oil, castor oil, and petroleum jelly. The friction coefficient increased distinctly with the miniaturization of the specimen size. The reason for this phenomenon was also discussed in this paper.
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页码：4067 / 4072
页数：5
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