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ED-drilling of WC-Co to Minimize Electrolytic Corrosion on a Workpiece Surface  

Song, Ki-Young (School of Mechanical and Aerospace Engineering, Seoul National Univ.)
Chung, Do-Kwan (School of Mechanical and Aerospace Engineering, Seoul National Univ.)
Park, Min-Soo (Division of Mechanical and Automotive Engineering, Wonkwang Univ.)
Chu, Chong-Nam (School of Mechanical and Aerospace Engineering, Seoul National Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.26, no.8, 2009 , pp. 47-54 More about this Journal
Abstract
In this study, a simple and effective method was proposed to minimize electrolytic corrosion on the workpiece during ED-drilling using water as a working fluid. The adhesion of a cover plate onto the surface of the workpiece was greatly effective for suppressing electrolytic corrosion during ED-drilling. The experiment revealed that the adhesion of the cover plate prevented corrosion without causing significant changes in machining characteristics. Using the machining method proposed in this paper, electrolytic-corrosion-free holes can be machined without change in the machinery system. By using corrosion-free hole as a start hole for wire EDM, a lead frame die with high quality was fabricated successfully.
Keywords
Electrical Discharge Drilling; Tungsten Carbide; Electrolytic Corrosion; Cover Plate; Electrical Discharge Machining;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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