摘要:

AbstractThe effect of infeed rate on the thickness of the white layer, surface metallography, and specific grinding energies during centreless grinding have been determined, and the maximum grinding zone temperature calculated. The average thickness of the white layer is a well defined function of the machining conditions, and increases approximately linearly from 0.24 to 1.53μm as the infeed rate increases from 0.14 to 1-56 mm min−1. The surface roughness increases with the depth of white layer, which is formed essentially by a process of intense plastic deformation. The results are discussed in terms of Shaw’s Brinell indentation model of grinding.

ISSN:0267-0844    

DOI:10.1179/sur.1990.6.2.129

出版商:Taylor&Francis    

年代:1990

数据来源: Taylor

摘要:

AbstractThe wear behaviour of plasma nitrided low alloy steel has been investigated under dry rolling contact with sliding traction. Particular attention was paid to subsurface shear behaviour during the wear process, and to prediction of the load bearing capacity of the nitrided specimens. A simple model has been developed to describe the influence of hardened depth, strength and residual stresses of the nitrided case, and coefficient of friction on the initiation of shear deformation in the contact bodies during the wear process. Experimental results and the model show that a relatively thick and strong nitrided case is required for the specimens to bear high loads without severe wear. The model also indicates the complex effect of compressive residual stresses on the maximum shear stress distribution in the subsurface induced by the applied forces.

ISSN:0267-0844    

DOI:10.1179/sur.1990.6.2.133

出版商:Taylor&Francis    

年代:1990

数据来源: Taylor