Surface Alloying by Powder Metallurgy Tool Electrode Using EDM Process

Gill, Amoljit Singh; Kumar, Sanjeev

doi:10.1016/j.matpr.2015.07.006

Cited by 21 publications

(6 citation statements)

References 10 publications

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“…Machkale et al [40] experimentally investigated the coating characteristics of Cu and W powder metallurgy electrodes on steel, and peak current was the most significant parameter on material deposition. Gill et al [41] experimented with the EDC process with Copper-Chromium-Nickel manufactured by powder metallurgy on high-carbon steel and reported high microhardness of 850 to 1100 HV. Chakraborty et al [42] discussed surface modification of aluminum alloy by SiC and Cu powder metallurgy electrodes and reported that the wear resistance of aluminum substrate was improved.…”

Section: Powder Metallurgical Electrodesmentioning

confidence: 99%

Electric discharge coating process: a critical review with potential application

Kumaran

Muralidharan²

2023

Eng. Res. Express

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Electric discharge coating (EDC) process is a competitive surface coating technology that alters the desired surface characteristics. EDC process deposits the material on the substrates from the sacrificial electrode by spark erosion process with the potential advantage of depositing any materials. This paper extensively reviews the work carried out in the EDC process and suggests areas of improvement for easy adaptability in industrial applications. Here, the variants of the EDC process, the route map for process parameter selection, the advantage over conventional methods, and coating characterization are discussed. The review sequentially presents the fundamental process, detailed analysis of tool and workpiece materials used, process parameters, and applications. EDC process has continued to be a key solution for many industrial needs, with the critical advantage of enhancing the substrate's serviceability and protecting against corrosion, thermal stress, and other adverse environmental conditions. The scope of the work is discussed in detail, with potential industrial and biomedical applications suggesting avenues for researchers and industrialists.

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Section: Powder Metallurgical Electrodesmentioning

confidence: 99%

Electric discharge coating process: a critical review with potential application

Kumaran

Muralidharan²

2023

Eng. Res. Express

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“…There are powder casting and the metallurgy routes for forming MMC components, but their versatility is greatly enhanced by improving their process ability., The growing demand for such sophisticated materials requires economical processing methods. EDM or spark erosion are widely used in the production of molds and molds [8,9] Amoljit Singh Gill, et al [10] studied electrical discharge alloying (EDA) is used to modify the surface of high carbon steel by using composite electrode (Copper-Chromium Nickel) manufactured by powder metallurgy (PM) process. The effect of EDM parameters on micro hardness during the surface alloying is a studied Experimental results show the increase in micro hardness of a machined surface by 139.7% as a compared to base material.…”

Section: Figure: 1 Edm Machinementioning

confidence: 99%

Effect of SiC-Cu Electrode on Material Removal Rate, Tool Wear and Surface Roughness in EDM Process

Laibi¹,

Shather²

2020

ETJ

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Electrical discharge machining (EDM) is one of the most common non-traditional processes for the manufacture of high precision parts and complex shapes. The EDM process depends on the heat energy between the work material and the tool electrode. This study focused on the material removal rate (MRR), the surface roughness, and tool wear in a 304 stainless steel EDM. The composite electrode consisted of copper (Cu) and silicon carbide (SiC). The current effects imposed on the working material, as well as the pulses that change over time during the experiment. When the current used is (8, 5, 3, 2, 1.5) A, the pulse time used is (12, 25) μs and the size of the space used is (1) mm. Optimum surface roughness under a current of 1.5 A and the pulse time of 25 μs with a maximum MRR of 8 A and the pulse duration of 25 μs.

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“…Many methods are reported to improve a particular surface property by alloying the workpiece surface with suitable elements using EDM. Researchers have used sintered or semi-sintered powder metallurgy (PM) electrode, [5][6][7] powder suspended in a dielectric fluid [8][9][10][11] and suitable dielectric fluid 12 for surface alloying. Research is going on to investigate the performance of tool electrode manufactured by PM process.…”

Section: Literature Reviewmentioning

confidence: 99%

“…In an earlier work of surface alloying, 7 Cu-Cr-Ni PM tool was used on En31 work material. An attempt has now been made to investigate the MH of another work material (H11) with a view to study the effect of the change in material composition on the phenomenon of surface alloying.…”

Section: Effect Of Discharge Voltagementioning

confidence: 99%

Micro-hardness evaluation for surface alloying of H11 die steel with Cu–Cr–Ni powder metallurgy tool in electrical discharge machining

Gill

Kumar

2016

Proceedings of the Institution of Mechanical Engineers, Part B:

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Electrical discharge machining is a non-conventional material removal process; recently, efforts have been made to use it as a surface alloying/modifying method. This study investigates and compares the micro-hardness of the surface machined by electrical discharge machining process using composite tool electrode (copper-chromium-nickel) manufactured by powder metallurgy and conventional copper tool. Design of experiment is used to find the best level of process parameters in order to achieve high micro-hardness. The machined surfaces are subsequently analyzed using different techniques like scanning electron microscopy, X-ray diffraction and energy-dispersive spectroscopy to ascertain the surface characteristics. Results indicate that the micro-hardness of the alloyed surface formed by powder metallurgy tool electrode is improved by 96.3% as compared to base material and 65.7% as compared to the surface machined by conventional copper electrode. Energy-dispersive spectroscopy of the surface machined using powder metallurgy electrode confirms significant material migration from tool and dielectric to the machined surface. The X-ray diffraction shows the formation of cementite (Fe 3 C), intermetallic compound of iron, chromium and nickel (FeCrNi) and chromium carbide (Cr 7 C 3) on the surface machined using powder metallurgy electrode.

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Surface Alloying by Powder Metallurgy Tool Electrode Using EDM Process

Cited by 21 publications

References 10 publications

Electric discharge coating process: a critical review with potential application

Electric discharge coating process: a critical review with potential application

Effect of SiC-Cu Electrode on Material Removal Rate, Tool Wear and Surface Roughness in EDM Process

Micro-hardness evaluation for surface alloying of H11 die steel with Cu–Cr–Ni powder metallurgy tool in electrical discharge machining

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