Surface treatments are typical surface protection against corrosion or serve to create an attractive appearance for the end customer. However, the surface to which they are applied must be completely oxide-free, otherwise, defects occur which can cause subsequent corrosion or deterioration of the visual appearance of the product. The parts manufactured by wire electrical discharge machining, however, have a high tendency to oxidize. For this reason, this study was aimed at demonstrating the effect of machine setup parameters (gap voltage, pulse on and off time, wire feed and discharge current) on oxygen occurrence on the surface of two non-metallic (aluminium alloy 7475-T7351, chromium nickel superalloy Inconel 625) and four metallic materials (tool alloy steel X210Cr12, Hadfield steel, Creusabro 4800 and Hardox 400). Within this study, 18 samples were produced, where the chemical composition of energy-dispersive X-ray was analysed, on the basis of which the effect of these parameters on the surface oxidation was proved.
HoKHNewmanSTRahimifardS, et al.State of the art in wire electrical discharge machining (WEDM). Int J Mach Tools Manuf2004; 44: 1247–1259.
3.
KnightWABoothroydG. Fundamentals of metal machining and machine tools, 3rd ed. Boca Raton, FL: CRC Press, 2005.
4.
ShinHSKimBHChuCN. High frequency micro wire EDM for electrolytic corrosion prevention. Int J Precis Eng Manuf2011; 12: 1125–1128.
5.
BhaskaranRPalaniswamyNRengaswamyNS, et al.A review of differing approaches used to estimate the cost of corrosion (and their relevance in the development of modern corrosion prevention and control strategies). Anti Corros Meth Mater2005; 52: 29–41.
6.
JavaherdashtiR. How corrosion affects industry and life. Anti Corros Meth Mater2000; 47: 30–34.
7.
Jones DA. Principles and prevention of corrosion. 2nd ed. Upper Saddle River, NJ: Prentice Hall, 1996, pp.168–198.
8.
KumarAKumarVKumarJ. Surface crack density and recast layer thickness analysis in WEDM process through response surface methodology. Mach Sci Technol2016; 20: 201–230.
9.
ChalisgaonkarRKumarJ. Parametric optimization and modelling of rough cut WEDM operation of pure titanium using grey-fuzzy logic and dimensional analysis. Cogent Eng2014; 1: 979973.
10.
KumarAKumarVKumarJ. Microstructure analysis and material transformation of pure titanium and tool wear surface after wire electric discharge machining process. Mach Sci Technol2014; 18: 47–77.
11.
GoswamiAKumarJ. Investigation of surface integrity, material removal rate and wire wear ratio for WEDM of Nimonic 80A alloy using GRA and Taguchi method. Eng Sci Technol Int J2014; 17: 173–184.
12.
DelgadoYPDe BaetsPBonnyK, et al.Influence of wire-EDM on high temperature sliding wear behavior of WC10Co (Cr/V) cemented carbide. Int J Refract Metals Hard Mater2013; 41: 198–209.
13.
KlockeFHensgenLKlinkA, et al.Structure and composition of the white layer in the wire-EDM process. Procedia CIRP2016; 42: 673–678.
14.
LiLLiZYWeiXT, et al.Machining characteristics of Inconel 718 by sinking-EDM and wire-EDM. Mater Manuf Process2015; 30: 968–973.
15.
ZhangC. Effect of wire electrical discharge machining (WEDM) parameters on surface integrity of nanocomposite ceramics. Ceram Int2014; 40: 9657–9662.
16.
CooperLBenhaddadSWoodA, et al.The effect of surface treatment on the oxidation of ferritic stainless steels used for solid oxide fuel cell interconnects. J Power Sources2008; 184: 220–228.
17.
KimHMMiyajiFKokuboT, et al.Preparation of bioactive Ti and its alloys via simple chemical surface treatment. J Biomed Mater Res1996; 32: 409–417.
18.
MouralovaKMatousekRKovarJ, et al.Bednar, Analyzing the surface layer after WEDM depending on the parameters of a machine for the 16MnCr5 steel. Measurement2016; 94: 771–779.
19.
MouralovaKKovarJKlakurkovaL, et al.Analysis of surface morphology and topography of pure aluminium machined using WEDM. Measurement2018; 114: 169–176.
20.
MouralovaKKovarJKlakurkovaL, et al.Comparison of morphology and topography of surfaces of WEDM machined structural materials. Measurement2017; 104: 12–20.
21.
MouralovaKKovarJKlakurkovaL, et al.Analysis of surface and subsurface layers after WEDM for Ti-6Al-4V with heat treatment. Measurement2018; 116: 556–564.
22.
MouralovaKKlakurkovaLMatousekR, et al.Influence of the cut direction through the semi-finished product on the occurrence of cracks for X210Cr12 steel using WEDM. Arch Civil Mech Eng2018; 18: 1318–1331.
23.
Mouralova K. Moderní technologie drátového elektroerozivního řezání kovových slitin. Doctoral thesis, CERM, Czech Republic, 2015.
24.
SharmaPChakradharDNarendranathS. Evaluation of WEDM performance characteristics of Inconel 706 for turbine disk application. Mater Des2015; 88: 558–566.
25.
ManjaiahMNarendranathSBasavarajappaS, et al.Investigation on material removal rate, surface and subsurface characteristics in wire electro discharge machining of Ti50Ni50-xCux shape memory alloy. Proc IMechE, Part L: J Materials: Design and Applications2015; 232: 164–177.
26.
HuangCAHsuCCKuoHH. The surface characteristics of P/M high-speed steel (ASP 23) multi-cut with wire electrical discharge machine (WEDM). J Mater Process Technol2003; 140: 298–302.
27.
HuangCAHsuFYYaoSJ. Microstructure analysis of the martensitic stainless steel surface fine-cut by the wire electrode discharge machining (WEDM). Mater Sci Eng A2004; 371: 119–126.
28.
ShabgardMFarzanehSGholipoorA. Investigation of the surface integrity characteristics in wire electrical discharge machining of Inconel 617. J Brazil Soc Mech Sci Eng2017; 39: 857–864.
29.
HasçalýkAÇaydaşU. Experimental study of wire electrical discharge machining of AISI D5 tool steel. J Mater Process Technol2004; 148: 362–367.
