A Theorem for Finding Maximum Temperature in Wet Grinding
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Surface grinding is an industrial machining process aiming to remove excess material of a workpiece by means of an abrasive wheel which rotates at high speed over its surface. Most of the energy used in the grinding process is converted into heat, and it is accumulated within the contact zone between the wheel and the workpiece . The high temperatures reached can thermally damage the quality of the workpiece, burning the workpiece, causing metallurgical phase transformations, softening (tempering) the surface layer with possible rehardening, onsetting residual tensile stresses, and causing cracks. Therefore, the determination of the temperature field evolution inside the workpiece is of great industrial importance. In order to avoid thermal damage, coolant is usually delivered to the porous grinding zone at a high velocity, so friction is reduced and cooling by convection occurs. Some recommendations for the optimization of the coolant usage are found in.