Study on Surface Characteristics of EDMed Surface with Nickel Powder Mixed Fluid

Abstract:

EDM finishing technology has progressed recently, and very small surface roughness can be obtained by controlling the electrical discharge conditions. Also, EDM using powder mixed fluids can improve the surface characteristics. Therefore, the EDM finished surface is highly expected to be applied as a final metal mold surface. In that case, the characteristics of EDMed surface influence the molding performance and the life of metal molds. As a new surface finishing method by EDM, the characteristics of EDMed surface using a nickel powder mixed fluid was experimentally discussed in this study, since nickel coatings have been widely applied to improve the corrosion resistance and the mold releasability of metal molds. Experimental analysis clarified that the resolidified layer containing nickel content could be formed on the surface by EDM in nickel powder mixed fluid. Also, the water repellency and the releasability of molded resin from the EDM finished surface could be improved.

• Periodical: Key Engineering Materials (Volumes 656-657)
• Pages: 375-380
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.656-657.375
• Online since: July 2015
• Authors: Shuhei Iwasaki*, Ryoji Kitada, Akira Okada, Yasuhiro Okamoto
• Keywords: EDMed Surface, Mold Releasability, Nickel Powder Mixed Fluid, Water Repellency

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