Surface modification through Electrical Discharge Machining (EDM) is an active area of research as it involves only surface alloying without affecting the core material. In the present work, surface hardness of AISI D3, a type of high carbon high chromium (HCHCr) die steel, has been enhanced using powder mixed EDM process. Manganese powder is mixed in different concentrations of 5, 10 and 15 g/litre in the dielectric oil. Design of experiment approach is used to investigate the effect of five process variables, namely electrode material, peak current, pulse on time, pulse off time and powder concentration, on surface hardness of the die steel. Surface hardness of unmachined and EDMed (without powder mixing) HCHCr die steel is 710 HV and 1242 HV respectively, whereas after manganese powder mixed EDM, and using graphite electrode with negative polarity, the micro hardness of this material is obtained as high as 2815 HV due to surface alloying. The material transferred on the machined surface is further investigated through scanning electron microscopy and X-ray diffraction analysis.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Impact of Powder-mixed Electrical Discharge Machining on Surface Hardness of AISI D3 Die Steel


    Contributors:


    Publication date :

    2019-07-01


    Size :

    189547 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Powder Mixed Micro-Electric Discharge Machining—A Review

    Shinde, R. H. / Raut, D. N. / Patil, N. G. et al. | Springer Verlag | 2022


    Machining Performance Analysis in Electrical Discharge Machining of Alloy Tool Steel

    Singh, Amandeep / Singh, Lakhvir / Singh, Palwinder | SAE Technical Papers | 2022


    Finish electrical discharge machining in large surface - finish machining phenomena

    Furuya,M. / Mohri,N. / Saito,N. et al. | Automotive engineering | 1992


    Investigation into erosion rate of AISI 4340 steel during wire electrical discharge turning process

    Giridharan, Abimannan / Samuel, G. L. | British Library Online Contents | 2018


    Surface Modification Using Electric Discharge Machining (EDM) with Powder Addition

    Khan, A.A. / Ndaliman, M.B. / Zain, Z.M. et al. | British Library Conference Proceedings | 2012