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Dieless Wire Drawing by Enforced Necking Method  

Huh, You (경희대학교 기계.산업시스템 공학부)
Kim, Seung-Hoon (경희대학교 대학원 섬유공학과)
Kim, Ihn-Seok (경희대학교 전자정보학부)
Paik, Young-Nam (경희대학교 기계.산업시스템 공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.24, no.7, 2007 , pp. 98-105 More about this Journal
Abstract
In modern industries, materials are required that possess multi-functional properties and at the same time flexibility in their shapes with structural stability. The major technology realizing this requirement consists of thinning metal wires and laying them with stable contact nodes. This research has dealt with a new method to manufacture thin wires by drawing without applying dies, but with introducing enforced necking, which enables to process multi-ends. Based on the new method, the process dynamics was modelled and its steady-state characteristics were analyzed. Results showed that the profiles of the material velocity in the drawing zone increased with a downward convex shape, while the cross-sectional area decreased with the shape of upward convex. The microwave heating turned out to be effective in wire drawing, but dependent on the input feeding direction. The variation in the diameters of the drawn wires was negatively affected by increasing the drawing ratio.
Keywords
metal wire; drawing; dies; enforced necking; microwave heating; process dynamics; modelling; steady-state characteristics; diameter variation; drawing ratio;
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