Original scientific paper

https://doi.org/10.17559/TV-20190728094458

Multi-Attribute Optimization of the WEDM Process for Surface Characteristics and Productivity

Trung-Thanh Nguyen ; Department of Manufacturing Technology, Le Quy Don Technical University, 236 Hoang Quoc Viet, Ha Noi 100000, Viet Nam
Khoa Dang Nguyen* orcid.org/0000-0002-6525-5245 ; Phenikaa University, Yen Nghia, Ha Đong,Hanoi 12116, Vietnam Phenikaa Research and Technology Institute (PRATI), A&A Green Phoenix Group JSC, No. 167 Hoang Ngan, Trung Hoa, Cau Giay, Hanoi 11313, Vietnam

Abstract

Wire-cut electrical discharge machining (WEDM) process is a proficient operation for the precise manufacturing of complex profiles of difficult-to-cut materials. The purpose of the current paper is to determine optimal processing inputs, including the WEDM current (CU), WEDM voltage (DV), pulse duration (Ton), and the speed of the wire electrode (WS) to decrease the depth of the recast layer (DL) as well as the root mean square roughness (RMSR) and enhance the cutting speed (CS) of the WEDM operation. The radius basis function (RBF) approach is employed to develop the predictive models of technical responses. The non-dominated sorting particle swarm optimization (NSPSO) is applied to obtain the optimal values of processing inputs and WEDM performances measured. The findings revealed that the proposed RBF models significantly contribute to the accurate prediction for the WEDM outputs. The optimal values of the CU, Ton, DV, and WS are 5.0 A, 6.0 μs, 33.0 V, and 4 m/min, respectively.The optimized values of the RMSR and DL are decreased by 60.98% and 15.55%, respectively, while the CS is enhanced by 8.90%. This work can be listed as an alternative solution for improving the surface characteristics and productivity of the WEDM process.

Keywords

cutting speed; optimization; parameters; root mean square roughness; the depth of the cast layer; WEDM

Hrčak ID:

255814

URI

https://hrcak.srce.hr/255814

Publication date:

17.4.2021.

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