Friction Characteristics in Green Drilling Titanium Alloy Ti6Al4V

doi:10.1007/s12204-012-1346-1

上海交通大学学报（英文版） ›› 2012, Vol. 17 ›› Issue (6): 684-689.doi: 10.1007/s12204-012-1346-1

Friction Characteristics in Green Drilling Titanium Alloy Ti6Al4V

WU Jian1* (吴健), HAN Rong-di2 (韩荣第)

(1. School of Naval Architecture, Harbin Institute of Technology (Weihai), Weihai 264209, Shandong, China; 2. Department of Mechanical Manufacture and Automation, Harbin Institute of Technology, Harbin 150001, China)

出版日期:2012-12-31 发布日期:2012-12-30
通讯作者: HAN Rong-di2 (韩荣第) E-mail:wujianhit2008@yahoo.com.cn

Friction Characteristics in Green Drilling Titanium Alloy Ti6Al4V

WU Jian1* (吴健), HAN Rong-di2 (韩荣第)

(1. School of Naval Architecture, Harbin Institute of Technology (Weihai), Weihai 264209, Shandong, China; 2. Department of Mechanical Manufacture and Automation, Harbin Institute of Technology, Harbin 150001, China)

Online:2012-12-31 Published:2012-12-30
Contact: HAN Rong-di2 (韩荣第) E-mail:wujianhit2008@yahoo.com.cn

摘要/Abstract

摘要： Titanium alloy Ti6Al4V, as difficult-to-cut material, has poor machinability. Conventional cutting fluid serves as a coolant and lubricant. In green drilling, water vapor is recognized as an effective coolant; however, its lubrication properties are not well known in drilling. This paper investigates the friction characteristics between chip and tool in green drilling Ti6Al4V, compared with that in sliding and turning process. A friction evaluation model is developed based on the equivalent model of drilling, then is used to calculate the effective friction coefficient. Results indicate that the friction coefficient on the tool-chip interface is considerably reduced in drilling by water vapor, so the drilling forces decrease, too. The friction coefficient decreases as velocity increases in drilling, which is different from the law of sliding tests; the friction coefficient increases when the distance to chisel edge increases.

关键词: titanium alloy, green drilling, friction characteristics, drilling force

Abstract: Titanium alloy Ti6Al4V, as difficult-to-cut material, has poor machinability. Conventional cutting fluid serves as a coolant and lubricant. In green drilling, water vapor is recognized as an effective coolant; however, its lubrication properties are not well known in drilling. This paper investigates the friction characteristics between chip and tool in green drilling Ti6Al4V, compared with that in sliding and turning process. A friction evaluation model is developed based on the equivalent model of drilling, then is used to calculate the effective friction coefficient. Results indicate that the friction coefficient on the tool-chip interface is considerably reduced in drilling by water vapor, so the drilling forces decrease, too. The friction coefficient decreases as velocity increases in drilling, which is different from the law of sliding tests; the friction coefficient increases when the distance to chisel edge increases.

Key words: titanium alloy, green drilling, friction characteristics, drilling force

中图分类号:

TH 117.1

WU Jian1* (吴健), HAN Rong-di2 (韩荣第). Friction Characteristics in Green Drilling Titanium Alloy Ti6Al4V[J]. 上海交通大学学报（英文版）, 2012, 17(6): 684-689.

WU Jian1* (吴健), HAN Rong-di2 (韩荣第). Friction Characteristics in Green Drilling Titanium Alloy Ti6Al4V[J]. Journal of shanghai Jiaotong University (Science), 2012, 17(6): 684-689.

参考文献

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