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http://dx.doi.org/10.14775/ksmpe.2020.19.05.82

A Study on the Elimination of Surface Defect and Increase in Tool Life of the Warm Forged Spider  

Kang, Jong-Hun (School of Aero-Mechanical Engineering, Jungwon UNIV.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.19, no.5, 2020 , pp. 82-90 More about this Journal
Abstract
Due to the complicated shape of the spider, the production method was changed from cold to warm forging. Finite element analysis was performed to predict the forging load and shape using the enclosed hydraulic die set. As the forging load increases due to the spider die volume, die stress analyses were performed to optimize the die design in order to reduce the die stress in various conditions. Large deformation while producing the complicated forging parts induces high forging load, which is one of the main parameters of the forging surface defects. The forging process was analyzed to find out the root cause of the surface defects generated during the spider production for various parameters, thereby revealing that the radius of die in the defect zone influenced the air trap depth, being the root cause of the surface defect. It was verified that die life was increased and the surface defect was eliminated by changing the die design during the mass production test.
Keywords
CV Joint; Spider; Warm Forging; F.E. Analysis; Forging Defect;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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