Estimation of the convection heat transfer coefficient of coolant and prediction of the maximum temperature within the grinding zone
by Bin Lin, Xuewen Chen, Michael N. Morgan, Hui Wu
International Journal of Abrasive Technology (IJAT), Vol. 2, No. 2, 2009

Abstract: Grinding fluid is used to minimise grinding wheel wear, reduce forces and surface grinding temperatures and to improve process efficiency. The overall effectiveness of the fluid is therefore strongly determined by the ability of the fluid to remove heat from the contact region. This paper presents results of an investigation concerned with methods to determine the value of the convection heat transfer coefficient. The work is based on the theory of fluid dynamics and on analytical models that are used to describe the heat transfers within the grinding zone under different grinding conditions. The simulation research is made by means of FEM for the wet-grinding temperature distribution and a three dimensional topology map of the temperature distribution was obtained. Temperature is measured with the clamped thermocouple in different grinding condition. It was found that results obtained from the simulations correlated well with those from the experiment. The simplicity and accuracy of the methodology allows application to a wide range of grinding regimes from shallow cut through to high efficiency deep grinding.

Online publication date: Fri, 16-Jan-2009

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