Experimental Investigation of Machinability of Chromium-Nickel Based Steels by Milling Method

Abstract

Today, it has become very important to determine the cutting parameters in the machining process. In order to produce at the desired quality, it is necessary to determine the processing parameters according to the type of material. Because cutting insert selection should be made according to the hardness of the material so that both the cutting insert service life is longer and the desired surface quality can be achieved in the material to be processed. In the literature, the main factors affecting surface roughness are feed rate, cutting speed, depth of cut, coolant, etc. In this context, 1.2316 steel, which is one of the chromium nickel-based materials, was preferred, and a study was conducted to evaluate the effects of steel on surface roughness with the processes performed under cutting speed, feed rate, depth of cut and wet/dry cutting conditions. Using the Taguchi optimization method, the interaction between the determined levels of the processing parameters was examined and the optimum values were tried to be determined. Within the scope of the study, nine different experiments were carried out using Taguchi's L9 orthogonal sequence and the surface roughness data obtained as a result of each experiment were recorded. According to the results of the analysis, the feed rate with an effect rate of 35.2 % was the parameter that affected the surface roughness the most. Progress was followed by aqueous and dry cutting conditions with an effect rate of 29.09 % The effect of the depth of cut was 22.18 % while the cutting speed was 3.54%, very little. As a result of the experimental studies, the experimental study, in which the surface roughness was the best, that is, the Ra value was the lowest, was conducted under the conditions of cutting speed of 100 m/min, feed rate of 400 mm/min, depth of cut of 1.5 mm and aqueous cutting. These findings may be useful in the processing of groups of stainless materials to be used in the production of equipment that will be resistant to corrosion.