219 金属箔の金属セパレータ状電磁張出し成形(高エネルギー加工)

概要

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The electromagnetic bulging described in this paper is able to bulge a SUS304-O stainless steel sheet uniformly. Though a sheet metal with high electrical conductivity such as an aluminum sheet and a copper sheet is able to bulge easily, the bulging of the stainless sheet is difficult because the sheet has low electrical conductivity and high flow stress. The die forming of the SUS304-O sheet is performed by using the copper sheet as a driving plate (driver), when a flat two-turn coil is adopted to bulge uniformly. The die is 12mm wide, 60mm long and has a small meandering groove with a 0.6mm depth and a corner radius of 0.3mm. A forming region of the sheet metal is narrow, but use of the coil enables uniform bulging of the sheet. An obtained workpiece does not almost have wrinkles and curves.
2009-11-06