Remote Nondestructive Thermal Control of Elastic Abrasive Cutting

Abstract

High temperatures during abrasive cutting lead to increased harmful gas emissions released into the environment, intensified cut-off wheel wear, microstructural changes in the machined material, and occurrence of thermal flaws. Temperature measurement in abrasive cutting is difficult due to the small size of the heated area (only tenths of mm2), high temperatures (above 1000°C), continuous change of the conditions within one cut-off cycle, large temperature gradient (more than 200°C), high cutting speed (above 50 m/s) and high mechanical load. The infrared thermography (IRT) application for thermal control of elastic abrasive cutting have been studied. The performed thermal measurements have been verified with the results obtained from the temperature models of workpiece, cut-off wheel, and cut piece depending on the conditions in elastic abrasive cutting of two structural steels C45 and 42Cr4. The parameters of effective abrasive cutting have been determined by applying multi-objective optimization.

Numerical simulation of abrasive cutoff operation based on ALE adaptive meshing technique

“…However, in the model of Hou and Komanduri, the algorithm predicting energy partition between wheel and workpiece often leads to too much heat generated on the cutting surface flowing into the workpiece rather than the wheel. In 2019, Stoynova et al 10 derived a semi-empirical model recurring the temperature field during elastic abrasive cutting based on experimental data. The achieved results could be used for improving thermal control, tool durability, process intensity, and surface quality.…”