Experimental Investigation on the Effect of EDM Wire Cut Parameters on the Formation of Cr₂₃C₆ in AISI 316 Steel

Abstract:

Wirecut Electrical Discharge Machining (WEDM) is a manufacturing process typically used to manufacture the machinery components in marine application with complex and challenging shapes and profiles. This study aims to investigate the effect of the EDM wire cut parameters on AISI 316 steel by analyzing the formation of Cr₂₃C₆. Cr₂₃C₆ can be formed in the grain boundary if the stainless steel is sensitized to a high temperature for too long. This compound becomes susceptible to intergranular corrosion than can reduce structural strength. The formation of Cr₂₃C₆ is of interest because this compound becomes vulnerable to intergranular corrosion than can reduce structural strength. The experimental variables in this study are pulse on time (i.e., 8 μs and 12 μs), servo voltage (i.e., 20 V and 30 V), and wire feed (i.e., 5 mm/min and 9 mm/min). The 0.2 mm brass wire is used during the EDM process. The result is then analyzed by surface roughness test, scanning electron microscope (SEM), and Energy-dispersive X-ray spectroscopy (EDS). As a result, the highest and lowest surface roughness values are 2.526 μm 1.771 μm, respectively. SEM results are seen in the pores of holes (craters) and fractures (microcracks). The result of EDS is the additions of elements Carbon (C) and copper (Cu), Oxygen (O). Increased carbon Chrom in HAZ sections allows for corrosion of grain limits.

• Periodical: Key Engineering Materials (Volume 948)
• Pages: 23-32
• DOI: https://doi.org/10.4028/p-851078
• Online since: June 2023
• Authors: Muslimin Muslimin*, Muhammad Iqbal, Sidiq Ruswanto, Farid Triawan, Faisal Mahmuddin
• Keywords: Cr₂₃C₆, Dies, Electrode Wire, Pulse On Time, Wire EDM

References

[1] K. H. Ho and S. T. Newman, State of the art electrical discharge machining (EDM)," Int. J. Mach. Tools Manuf., vol. 43, no. 13 (2003) 1287–1300.

DOI: 10.1016/s0890-6955(03)00162-7

[2] H. A. Patel, M. Najibullah, P. B. C. Khatri, and S. P. Patel, A Review on Parametric Optimization in Wire Electic Discharge Machining," IJSRD-International J. Sci. Res. Dev., vol. 3, no. 10 (2015) 2321–0613.

[3] Muslimin, L. Engelita, S. Prasetya, P. M. Adhi, and H. M. Ridlwan, Investigation the grain-boundary corrosion and cracking on stainless steel A316 processed by edm die-sinker for the food and medicines industry, Int. J. Mech. Prod. Eng. Res. Dev., vol. 10, no. 2 (2020) 191–200.

[4] S. Mohanty, B. C. Routara, and R. K. Bhuayan, Experimental investigation of machining characteristics for Al-SiC12% composite in Electro-discharge machining, Mater. Today Proc., vol. 4, no. 8 (2017) 8778–8787.

DOI: 10.1016/j.matpr.2017.07.227

[5] K. S. Kanekar, D. B. Meshram, and K. W. Edm, Investigation And Optimization Of Edm Performance Measures Using Empirical Data Analysis, IJRET Volume: 04 Issue: 08 (2015) 213–223.

DOI: 10.15623/ijret.2015.0408037

[6] J. R. Odedara, J. B. Shah, and P. M. Radia, Optimization of the Process Parameters of Wire Cut EDM – A Review, materialstoday: proceedings, vol. 3, no. 10 (2015) 525–526.

[7] P. Kumar Karsh, Optimization of process parameters for surface roughness of Inconel 625 in Wire EDM by using Taguchi method, IOSR J. Mech. Civ. Eng., vol. 03, no. 03 (2016) 58–63.

DOI: 10.9790/1684-15010030358-63

[8] V. L. Shukla, S. K. S. Yadav, L. Shukla, M. T. Student, and M. Engineering, Effect of Wire Cut EDM Parameters on Material Removal Rate, Volume: 07 Issue: 09 (2020) 374–377.

[9] D. Gajjar and J. Desai, Optimization of MRR, Surface Roughness and KERF Width in wire EDM Using Molybdenum Wire, Int. J. Res. Educ., vol. 4, no. 2 (2015) 9–17.

[10] G. Ugrasen, H. V. Ravindra, G. V. Naveen Prakash, and Y. N. Theertha Prasad, Optimization of Process Parameters in Wire EDM of HCHCr Material Using Taguchi's Technique, Mater. Today Proc., vol. 2, no. 4–5 (2015) 2443–2452.

DOI: 10.1016/j.matpr.2015.07.185

[11] V. N. Kulkarni, V. N. Gaitonde, V. Hadimani, and V. Aiholi, Analysis of Wire EDM process parameters in machining of NiTi superelastic alloy, Mater. Today Proc., vol. 5, no. 9 (2018) 19303–19312.

DOI: 10.1016/j.matpr.2018.06.289

[12] H. Saini, I. Khan, S. Kumar, and S. Kumar, Optimization of Material Removal Rate of WEDM Process on Mild Steel Using Molybdenum Wire, Int. J. Adv. Eng. Manag. Sci., vol. 3, no. 10 (2017) 1001–1005.

DOI: 10.24001/ijaems.3.10.5

[13] M. A. Hassan, N. S. Mehat, S. Sharif, R. Daud, S. H. Tomadi, and M. S. Reza, Study of the Surface Integrity of AISI 4140 Steel in Wire Electrical Discharge Machining, Lect. Notes Eng. Comput. Sci., vol. 2175, no. 1 (2009) 1666–1671.