ANALYSIS OF THERMALLY ASSISTED MACHINING TECHNOLOGIES FOR DIFFICULT-TO-CUT MATERIALS (A REVIEW)

This paper presents a comprehensive review of thermally assisted machining (TAM) methods for difficult-to-machine materials, including titanium alloys, high-strength steels, and superalloys. The study analyzes the fundamental principles of TAM, which involve localized heating of the workpiece to reduce its strength and improve machinability. The main focus is on laser-assisted, induction-assisted, and hybrid machining methods. It is shown that the application of thermal energy significantly reduces cutting forces, tool wear, and surface roughness, while improving process stability and machining efficiency. Special attention is given to the influence of temperature on material behavior and surface quality. A comparative analysis of different TAM techniques is carried out based on recent experimental and numerical studies. The results indicate that laser-assisted machining provides high precision and localized heating, induction heating ensures uniform temperature distribution, and hybrid methods offer improved performance due to combined effects. It is concluded that the effectiveness of TAM strongly depends on the optimal selection of process parameters, particularly temperature. Excessive heating may negatively affect material properties, while controlled thermal input leads to significant improvements in machining performance. The findings of this review highlight the significant potential of (TAM) technologies and their broad applicability in advanced industrial manufacturing processes, particularly in the machining of difficult-to-machine materials.

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