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http://dx.doi.org/10.5762/KAIS.2010.11.1.049

A Research on Lengthening the Life of Warm Forging Die  

Kim, Sei-Hwan (School of Mechanical&Automotive Engineering, Kongju National Univ)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.11, no.1, 2010 , pp. 49-54 More about this Journal
Abstract
Rotor pole for AC(alternating current) generator is manufactured through transfer warm forging die. As soon as the material is heated at the warm manufacturing process, it is transferred to the first stage for upsetting work and then to the second stage for lateral extrusion work. The processes at the lateral extrusion work such as die block, die bushing, center punch, and side punch make severe condition and abrasion which leads to shorten the die life. This causes production decrease, long maintenance time, and low level of precision. Research on the die material selection, heat process cycle improvement, electric discharge machining trouble solution, and re-construction of main parts is expected to find a method to lengthen the die life up to 40 - 50%.
Keywords
Warm forging; Forging work; Lateral extrusion; Impression;
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