CuZn15 Pirinç Malzemenin Delinme Performansının İncelenmesi

Abstract

Brass is basically a copper-zinc alloy. Zinc increases the strength of the brass, adding hardness and wear resistance to it. Brass is a copper alloy that is easy to produce and highly capable of forming. Therefore, it has found widespread and long-term use in many sectors. Drilling is one of the widely used machining methods with its simple structure and economy. In this study, CuZn15 brass alloy has been subjected to drilling tests in terms of two quality characteristics (cutting force and cutting tool temperature) considering four control factors (cutting speed, feed rate, drill bit angle and coating state). The effects of control factors on quality characteristics were modeled by regression analysis and optimum drilling conditions were tried to be determined by Taguchi method. For 95% confidence interval, the effect rates of control factors were calculated by variance analysis. Optimization was also tested by verification experiments. As a result of the experiments, it was observed that the order of importance of the control factors affecting the cutting force was the feed rate, the bit angle, the cutting speed and the coating state respectively, and the order of importance of the control factors affecting the cutting tool temperature was the cutting speed, the bit angle, the feed rate and the coating state. According to these results, optimization made at the level of 0.05 significance in terms of cutting force and cutting tool temperature was found appropriate.