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1 2024

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Investigation of the effects of machining parameters on cutting conditions during orthogonal turning of austenite stainless steel

Kónya Gábor, Takács János, Miskolczi István, Kovács Zsolt F.

Production Engineering Archives

2024

Vol. 30, Iss. 2

251--258

The 1.4306 austenite stainless steel has been prominently utilized as a material in the automotive and aerospace industry. Considerable interest has been garnered in the machinability of stainless steel ow-ing to its high strength and poor thermal conductivity. The aim of this study is to ascertain the influ-ential cutting parameters, specifically the cutting speed and feed rate, on cut-ting forces, cutting tem-perature, and chip evaluation. Thus, austenite stainless steel was subjected to free-cutting using a carbide recessing tool under dry conditions. The principle of measuring cutting temperature, a complex procedure due to varying thermal homogeneity, was elucidated. For the turning experiments in ques-tion, the standard Taguchi orthogonal array L9 (32), featuring two factors and three levels, was em-ployed. The experimental results were analyzed using MiniTab 17 software. The findings reveal a substantial effect of feed rate on cutting force, cutting temperature, and chip evaluation. The highest cutting force and cutting temperature were observed at a feed rate of 0.15 mm/rev. Conversely, the cutting force was minimized at a cutting speed of 100 m/min, indicating potential for increasing the cutting speed. The augmentation of feed rate led to chip compression and discoloration, attributed to elevated cutting force and a larger chip cross-section that efficiently dissipates heat from the cutting zone.