Grinding-hardening with liquid nitrogen: Mechanisms and technology

被引：70

作者：

Nguyen, T. ^{[1
]}

Zarudi, I. ^{[1
]}

Zhang, L. C. ^{[1
]}

机构：

[1] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia

来源：

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE | 2007年 / 47卷 / 01期

关键词：

grinding liquid nitrogen; microstructure; residual stresses; hardness; phase transformation; oxidation suppression;

D O I：

10.1016/j.ijmachtools.2006.02.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper studies an innovative development of a steel grinding-hardening technology using an inert cryogen-liquid nitrogen. It was found that phase transformations took place during grinding with the application of liquid nitrogen and resulted in hardened surface layer in a ground component. The layer had a fine laths martensite structure which gave rise to a remarkably high hardness. It was also shown that the treatment can produce superior surface integrity, with compressive surface residual stresses and without surface oxidation. Due to the inert nature of the liquid nitrogen, the grinding process becomes environmentally conscious. (C) 2006 Elsevier Ltd. All rights reserved.

引用

页码：97 / 106

页数：10

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