Showing papers by "Liangchi Zhang published in 1970"
TL;DR: In this paper, the authors studied fundamental problems in grinding towards high surface integrity and discussed the modelling of wheel modulus, interface forces, contact length and the surface heat source simulation.
Abstract: This paper studies some fundamental problems in grinding towards high surface integrity. Discussions are addressed on the modelling of wheel modulus, interface forces, contact length and the surface heat source simulation.
7 citations
TL;DR: In this article, the temperature fields induced by grinding were simulated with the aid of the finite element method and the resulting temperature histories were compared with the critical cooling rates of the alloy steel studied.
Abstract: The heat energy generated during grinding causes critical residual stresses that may affect the surface integrity of ground components. Therefore a thorough thermal analysis needs to be conducted through an appropriate modelling in relation to the grinding conditions and materials properties of workpieces. In this study, the thermal grinding conditions were simulated by inward and outward moving heat fluxes. The inward heat flux profiles were assumed to follow a triangular rule suggested by Zhang el al [1] and the outward ones were determined based on the thermal properties of the cooling media. The temperature fields induced by grinding were then simulated with the aid of the finite element method. To investigate the evolution of phase transformation associated with grinding, the resulting temperature histories were compared with the critical cooling rates of the alloy steel studied. The extent of martensite transformation of the ground components was predicted and correlated with a number of grinding parameters.
4 citations