Application of Taguchi Approach on Wire Electrical Discharge Machining of SS304 Sree Vidyanikethan Engineering College

Format:

Book

Conference/Event

Author/Creator:

Thejasree, P., author.

Contributor:

Joseph Selvi, Binoj

Krishnamachary, PC

N, Manikandan

Varaprasad, K C.

Conference Name:

International Conference on Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility (2021-10-08 : Chennai, India)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

SS304 (Stainless Steel 304) is a nickel- chromium based alloy, that is extensively used for the applications like cryogenic vessels, valves, refrigerator equipment and evaporators because of its high corrosion resistance, ductility and ability to remain as solid up to a temperature of 14000 C. SS304 is one of the tough to machine materials by conventional methods of machining. Wire Electrical Discharge Machining (WEDM) facilitates the ease of machining complicated cuts with hard to machine, conductive materials where high surface finish is required. In this investigation, a study has been done on WEDM of SS304 and mainly to optimize the process parameters during the machining of SS304 by using Taguchis analysis. Taguchis DoE approach is used to plan the experimental runs and by considering the process parameters such as pulse on time, pulse off time and peak current at three different levels the experiments were conducted. The performance measures considered in present analysis are material removal rate, surface roughness and overcut. Contour plot analysis has been prepared for revealing the overall influence of process variables on desired performance measures. Analysis of Variance (ANOVA) has been used to establish the significance of independent variables on the desired dependent variables. Through this overall investigational analysis, the effect of individual process parameters on the response parameters have been studied.Stainless steel alloys are primarily applied for high temperature applications. SS304 can maintain its mechanical and chemical characteristics stable in all kinds of working environments. These materials are considered as harder materials due to these extraordinary properties. Stainless Steel 304 is most widely used nickel and chromium based alloy for number of engineering applications such as refrigerator equipments, valves, evaporator coils and cryogenic applications. SS 304 shows high ductility, corrosion resistance and excellent tribological and abrasive behaviour at higher temperatures (Ramesh Raju and others 2019; Ramesh Raju and others 2018; Palanisamy and others 2021; Bagci and Seref, 2006; Kumar and others 2009). Wire Electrical Discharge Machining (WEDM) is a superior method of modern machining processes which is also familiar as spark erosion machining process. In WEDM, the spark generation is due to the gap voltage developed that is sufficiently higher to develop the required high power spark that rises the temperature to more than 10000 degree Celsius that eventually removes the metal from the work piece as shown in the figure 1. The material removal in this WEDM process is irrespective of the hardness of the material to be machined. (Palanisamy and others 2020; Davim, 2008; Manikandan and others 2020; Ugrase and others 2015; Manikandan and others 2020; El-Hofy 2005).Taguchis concept is a significant one for planning the experimental trials and also adopted for single response optimization. Optimization of process parameters plays a vital role in reducing the overall cost with an improved quality. An appropriate approach also has been adopted for deriving the multi performance called GRG, which is attained by a Multi Criteria Decision Making Method called Grey Relational Approach. The method of GRA is much helpful for deriving the various combinations for attaining better multiple performance machiningcharacteristics (Welling, 2014; Leone and others 2011; Yang and others 2017; Durairaj and others 2013; Raj and Radhika, 2017; Palanisamy and Senthil, 2016; Manikandan and others 2018).It is surmised from the available research article, that there is a demand of attention on machinability analysis of Wire Electrical Discharge Machining of harder materials. In this present explorative study, an endeavour has been considered for investigating the significance of process variables by Taguchi-Grey approach and to analyze the importance of variables using ANOVA analysis. Contour plots also developed for disclosing the prominence of input variables on desired performance measures

Notes:

Vendor supplied data

Publisher Number:

2021-28-0271

Access Restriction:

Restricted for use by site license