Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Mold-design Verification of Ball Housing Insert Die in Non Processing Type Multi-stage Cold Forging

다단냉간단조 비가공 타입에서 볼하우징 인서트 다이의 금형설계 검증

  • 황원석 (대한메탈(주) 기술연구소) ;
  • 최종원 (대한메탈(주) 기술연구소) ;
  • 정의은 (대한메탈(주) 기술연구소) ;
  • 강명창 (부산대학교 융합학부)
  • Received : 2021.09.13
  • Accepted : 2021.10.09
  • Published : 2021.12.31
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Abstract

Cold forging is a method in which molding is performed at room temperature. It has a high material recovery rate and dimensional precision and produces excellent surface quality, and it is mainly used for the production of bolted or housing products. The lifespan of cold forging molds is generally determined by the wear of the mold, plastic deformation of the mold, and fatigue strength. Cold forging molds are frequently damaged due to fatigue destruction rather than wear and plastic deformation in a high-temperature environment as it is molded at room temperature without preheating the raw material and mold. Based on the results analyzed through FEM, an effective mold structure design method was proposed by analyzing the changes in tensile and compressive stresses on molds according to the number of molds and reinforcement rings and comparing the product geometry and mold stress using three existing mold models.

Keywords

Acknowledgement

이 논문은 2019년 산업소재혁신기술개발사업연구비 지원에 의하여연구되었음.(NO.20006979)

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