Optimisation of Cutting Tool and Cutting Parameters in Face Milling of Custom 450 through the Taguchi Method

Harun Gokce

doi:10.1155/2019/5868132

Abstract

Stainless steels with unique corrosion resistance are used in applications with a wide range of fields, especially in the medical, food, and chemical sectors, to maritime and nuclear power plants. The low heat conduction coefficient and the high mechanical properties make the workability of stainless steel materials difficult and cause these materials to be in the class of hard-to-process materials. In this study, suitable cutting tools and cutting parameters were determined by the Taguchi method taking surface roughness and cutting tool wear into milling of Custom 450 martensitic stainless steel. Four different carbide cutting tools, with 40, 80, 120, and 160 m/min cutting speeds and 0.05, 0.1, 0.15, and 0.2 mm/rev feed rates, were selected as cutting parameters for the experiments. Surface roughness values and cutting tool wear amount were determined as a result of the empirical studies. ANOVA was performed to determine the significance levels of the cutting parameters on the measured values. According to ANOVA, while the most effective cutting parameter on surface roughness was the feed rate (% 50.38), the cutting speed (% 81.15) for tool wear was calculated.

Highlights

Due to its unique corrosion resistance, low heat conduction coefficient, and high mechanical properties, stainless steels are one of the materials most frequently encountered in many areas such as health, food, chemistry, marine, defense, and nuclear power plants, and their use continues to increase every day [1,2,3]. e Custom 450 is a martensitic stainless steel grade, which exhibits very good corrosion resistance, and its mechanical properties can be significantly increased by heat treatment methods
Variance of surface roughness values resulting from the machining of the Custom 450 according to the cutting speed-feed rate interaction is shown in Figure 3 in the form of a surface graph
Custom 450 martensitic stainless steel was subjected to milling experiments in dry conditions at the cutting parameters by means of carbide cutting tools in the face milling method, and the following results were obtained

Summary

Introduction

Due to its unique corrosion resistance, low heat conduction coefficient, and high mechanical properties, stainless steels are one of the materials most frequently encountered in many areas such as health, food, chemistry, marine, defense, and nuclear power plants, and their use continues to increase every day [1,2,3]. e Custom 450 is a martensitic stainless steel grade, which exhibits very good corrosion resistance (up to about 650°C), and its mechanical properties can be significantly increased by heat treatment methods. Due to its unique corrosion resistance, low heat conduction coefficient, and high mechanical properties, stainless steels are one of the materials most frequently encountered in many areas such as health, food, chemistry, marine, defense, and nuclear power plants, and their use continues to increase every day [1,2,3]. E Custom 450 is a martensitic stainless steel grade, which exhibits very good corrosion resistance (up to about 650°C), and its mechanical properties can be significantly increased by heat treatment methods. E low heat conduction coefficient and high mechanical properties of stainless steels make it difficult to process [5,6,7]. E feed rate and radius of tip of the cutting tool are significantly effective on the surface roughness. The type and amount of cutting fluid used is one of the factors affecting the results in the cutting process [20]

Methods

Results

Conclusion