Abstract:

X40CrMoV5-1 is widely used in the manufacturing of parts that require high temperature, thickness and stretching resistance in hot work cloth, injection and extraction patterns. On the other hand, in bringing cylindrical parts to the final geometry, the preference of hard tornalam instead of stone reduces the production time and cost, while also improves the fatigue strength of the piece. In this study, the basic cutting force (Fc) values obtained in the turning of the X40CrMoV5-1 steel, hardened to 55±1 HRC in vacuum thermal processing (covered and non-covered), were experimentally and numerically studied. Hard tornation experiments were performed according to the Taguchi L32 experimental design using different levels of cutting parameters (progress speed, cutting speed and cutting depth). For the experimental determination of Fc values, the Kistler 9257B dynamometers and equipment were used. Cutting simulations based on the method of the final elements are performed in the DEFORM 3D software. Furthermore, the effects of cutting parameters on Fc were determined by a 95% reliable variance analysis (ANOVA). The similarity between the experimental and numerical analysis results for Fc values was found at an average of 94% for non-covered teams, at 91% for non-covered teams. Based on experimental data, the ANOVA results found that the most important factor was the cutting depth.

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