International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 04 | Apr -2017
p-ISSN: 2395-0072
www.irjet.net
Optimization of CNC Face Milling Process Parameters for Inconel 718 by Using Taguchi Method – A Review Mayur N. Trimbakwade1, Manish T. Shete2 1PG 2Asst.
Scholar, Dept. Of Production Engineering, GCOE Amravati, Maharashtra, India Professor, Dept. of Mechanical Engineering, GCOE Amravati, Maharashtra, India
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Abstract - Every day scientists are developing new
machine tool using coded instructions which processed by a computer. The application of CNC to a manual machine allows to perform its operation to become fully automated. Combining this, with the use of a part program enhances the ability of the machine to perform repetitive tasks with higher degree of accuracy.
materials and for each new material, we need economical and efficient machining process. The main objective of industries are producing better quality product at minimum cost and increase productivity. Though, CNC milling is most commonly used in industry and machine shops for machining parts to precise sizes and shapes with desire surface quality and higher productivity within less time and cost. Face milling is very common method for finishing of new materials and machined materials. Inconel 718 is one of the most commonly used nickel based super alloy having a high temperature applications such as aerospace industries and gas turbines in aviation. It is known as the most difficult to cut materials due to its high strength even at high temperatures, low thermal conductivity, and rapid work hardening. An experiment will be performed to find out the set of optimum values of process parameters in order to reduce surface roughness (SR) and increase material removal rate (MRR) for the purpose of machining Inconel 718 Super Alloy. Also, To analyze effect of Process parameters on surface roughness (SR) and material removal rate (MRR) by plotting the various graphs. The cutting tool material used for this purpose is Carbide. The experiments are conducted by using Taguchi L9 orthogonal array method. Signal-to-Noise (S/N) ratio and Analysis of Variance (ANOVA) is used to analyses the effect of milling parameters on surface roughness and material removal rate.
Fig-1: Milling operation CNC (Computer Numerical Control) is a material removal process used to manufacture components with complicated shapes as well as profiles. In present time, CNC vertical milling machine technology has been improved significantly to meet advance requirements in various manufacturing fields, especially such as in the precision metal cutting industry. This experiment gives the effect of different machining parameters (spindle speed, feed, and depth of cut) on surface finish in face milling. CNC Milling machine is superior to other machines as compared to its accuracy and better surface finish. Every manufacturing industry is trying to achieve the high quality products in a very short period of time with less input. In milling machine, there are many process parameters like spindle speed, feed rate, depth of cut, tool geometry, coolant etc. which affected on required quality parameters. So, selections of such process parameters are the important for any quality parameters. Milling is basically classified into a three categories:
Key Words: CNC Milling Machine (VMC), Inconel 718
Super Alloy, Process parameters, Machining characteristics- SR and MRR, Carbide cutting tool, Taguchi method, ANOVA.
1. INTRODUCTION Milling is the process of removing extra work piece material with a rotating multi-point cutting tool, called milling cutter. The machine tool employed for milling is called milling machine. So, Milling is a multipoint cutting tool machining operation used for removing a layer of material from complete surface of workpiece and also producing slots in the components. CNC (Computer Numerical Control) is the general term used for a such system which controls the functions of a
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