Modeling of Electrochemical Machining of Nickel-Based Single Crystal Super Alloy by Combining Numerical and Design of Experiments Methods

Authors

1 Mechanical Engineering Department, University of Shahreza

2 Department of Mechanical Eng., University of Shahreza

3 Malek e Ashtar Uni of Tech

Abstract

The electrochemical machining process is an anodic dissolution process. Due to the inherent nature of the process and the complex physical, chemical, and hydrodynamic phenomena that occur during the process, it is difficult to model the process parameters. Therefore, a highly repeatable and appropriate method in terms of time and cost is important for modeling. In this paper, the simulation of the process is firstly performed by the numerical method and the Comsol software. The voltage, tool feed rate and electrolyte concentration are considered as input parameters and machining overcut and the material removal rate are considered as the response variables. 15 experiments were selected using the Box-Behnken design method to implement the response surface methodology. Then, the simulation was performed according to the experimental design in the Comsol software. Nickel-based single crystal superalloy workpiece is selected due to its improved mechanical properties. As a result, two quadratic mathematical models showing the relationship between two response variables with the input parameters are obtained. The adequacy and accuracy of these two mathematical models have been examined by the analysis of variance, correlation coefficient, and related graphs. Therefore, the combination of numerical simulation and design of experiments for modeling and investigating the effect of input parameters of electrochemical machining of the nickel-based single-crystal superalloy has been implemented in a favorable manner.

Keywords

References

[1]  Tailor PB, Agrawal A, Joshi SS (2013) Evolution of electrochemical finishing processes through cross innovations and modeling. Int J Mach Tool Manu 66: 15-36.
[2]  Rao RV, Kalyankar VD (2014) Optimization of modern machining processes using advanced optimization techniques: a review. Int J Adv Manuf Tech 73: 1159-1188.
[3] Mehrvar A, Basti A, Jamali A (2020) Inverse modelling of electrochemical machining process using a novel combination of soft computing methods. P I Mech Eng C-J Mec 234(17): 3436-3446.
[4]  Mirak AR, Kermanpour A (2020) Effect of directional solidification on the microstructure and mechanical properties of a 2th Generation Ni-base single crystal superalloy CMSX-4. Founding Res J 3(4): 187-199. 
[5]  Bhattacharyya B, Munda J (2003) Experimental investigation on the influence of electrochemical machining parameters on machining rate and accuracy in micromachining domain. Int J Mach Tool Manu 43(13): 1301-1310.
[6]  Neto JCS, Silva EM, Silva MB (2006) Intervening variables in electrochemical machining. J Mater Process Tech 179(1-3): 92-96.
[7]  Munda J, Malapati M, Bhattacharyya B (2007) Control of micro-spark and stray-current effect during EMM process. J Mater Process Tech 194(1): 151-158.
[8]  Senthilkumar C, Ganesan G, Karthikeyan R (2009) Study of electrochemical machining characteristics of Al/SiCp composites. Int J Adv Manuf Tech 43(3): 256-263.
[9]  Yong L, Di Z, Yongbin Z, Shaofu H, Hongbing Y (2010) Experimental investigation on complex structures machining by electrochemical micromachining technology. Chinese J Aeronaut 23(5): 578–584.
[10] Mehrvar A, Basti A, Jamali A (2017) Optimization of electrochemical machining process parameters: Combining response surface methodology and differential evolution algorithm. P I Mech Eng E-J Pro 231(6): 1114-1126.
[11] Mehrvar A, Basti A, Jamali A (2017) Modelling and parameter optimization in electrochemical machining process: application of dual response surface-desirability approach. Lat Am Appl Res 47(4): 157-162.
[12] Myers RH,  Montgomery DC (1995) Response surface methodology: Process and product optimization using designed experiments. Wiley, New York.
[13] Sun C, Zhu D, Li Z, Wang L (2006) Application of FEM to tool design for electrochemical machining freeform surface. Finite Elem Anal Des 43(2): 168-172.
 [14] Mehrvar A, Mirak A, Rezaei M (2020) Numerical and experimental investigation of electrochemical machining of nickel-based single crystal superalloy. Modares Mech Eng 20(7): 1873-1881.
Journal of Solid and Fluid Mechanics
Volume 10, Issue 3
October 2020
Pages 207-217

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