[KSCI] Korea Science Citation Index Service

Lubrication Effect of Liquid Nitrogen in Cryogenic Machining Friction on the Tool-chip Interface

Jun Seong-Chan (Department of Mechanical Engineering, Columbia University)

Publication Information

Journal of Mechanical Science and Technology / v.19, no.4, 2005 , pp. 936-946 More about this Journal

Abstract

The liquid nitrogen as an environmentally safe coolant has been widely recognized in cryogenic machining, its function as a lubricant is plausible due to its chemical inertness, physical volatility and low viscosity. Since a reduced friction is a direct witness of the lubrication effect from a tribological viewpoint, this paper presents an evaluation of the apparent friction coefficient on the tool-chip interface in cryogenic cutting operations to prove and characterize the lubricity of LN2 in cryogenic machining. The cryogenic cutting technology used in this study is based on a cooling approach and liquid nitrogen delivery system which are intended to apply liquid nitrogen in well-controlled fine jets to selectively localized cutting zones and to penetrate liquid nitrogen to the tool-chip interface. It has been found that the apparent friction coefficient can be significantly reduced in cryogenic machining, depending on the approach of liquid nitrogen delivery.

Keywords

Tool Wear; Tool Life; Cryogenic Machining;

Citations & Related Records

Times Cited By KSCI : 3 (Citation Analysis)
Times Cited By Web Of Science : 2 (Related Records In Web of Science)
Times Cited By SCOPUS : 1

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