HEAT TRANSFER IN THE COURSE OF MAGNETORHEOLOGICAL POLISHING

An investigation of thermal processes in the course of magnetorheological polishing has been carried out. Physical and mathematical description of heat transfer from a treated surface to a polishing tool is given with consideration of the specifi cs of the rheological and thermophysical properties of the tool acquired by it in a magnetic fi eld in the zone of treatment. An analytical estimate of the thermal state of a magnetorheological abrasive tool and of a treated workpiece surface is given. The temperatures of the workpiece surface and of the magnetorheological abrasive tool in the zone of their contact interaction in an inhomogeneous magnetic fi eld are determined experimentally. The increase in the temperature of the treatment zone by ΔT = 6.6o C at an absolute maximum temperature of T = 299.6 K is recorded experimentally, with the measured temperature gradient comprising 0.073 K/s.
   
Author:  M. L. Levin and A. L. Khudolei
Keywords:  magnetorheological polishing, thermal conductivity, heat release, temperature regime, treatment zone
Page:  797