Heat Transfer in the Course of Magnetorheological Polishing

摘要

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 specifics of the rheological and thermophysical properties of the tool acquired by it in a magnetic field 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 field are determined experimentally. The increase in the temperature of the treatment zone by Δ T = 6.6°C at an absolute maximum temperature of T = 299.6 K is recorded experimentally, with the measured temperature gradient comprising 0.073 K/s.