OBRABOTKAMETALLOV technology Vol. 24 No. 1 2022 Results and discussion Theoretical calculations of the cutting temperature have been confirmed by a number of experimental studies. The study of the cutting temperature was carried out on a console milling machine KFPE-250 with a CNC system Mayak-610 during symmetrical milling of the 56% Ni-Cr-W-Mo-Co-Al alloy with a Seco JS513050D2C.0Z3-NXT carbide cutter. The milling depth for all experiments was 0.1 mm. To measure the cutting temperature, a Fluke Ti400 thermal imager was used with an error in measuring the non-stationary temperature field of 5 %. Milling was carried out with different feeds and cutting speeds (table 2). The cutting temperature (Figure 5) was calculated based on the average temperatures on the face and flank surfaces according to the formula: ( ) average average face flank cut T c T h T c h ⋅ + ⋅ = + , (17) where average face T and average flank T are the average temperatures on the face and flank surfaces of the cutting blade, c and h are the coordinates of the face and flank surfaces of the cutting blade along which the temperature is distributed. Fig. 3. Temperature distribution over the face surface during milling of nickel based alloy 56% Ni-Cr-W-Mo-Co-Al – theoretical method Fig. 4. Temperature distribution over the flank surface during milling of nickel based alloy 56% Ni-Cr-W-Mo-Co-Al – theoretical method
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