Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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A Study on the Prediction of Void Closure in the Cogging Process of a Large Round Bar

대형 단조품 환봉 코깅 공정의 기공 압착 거동 예측에 관한 연구

  • 송민철 (현대중공업 기술개발본부 산업기술연구소) ;
  • 권일근 (현대중공업 기술개발본부 산업기술연구소) ;
  • 박연구 (현대중공업 엔진기계사업본부)
  • Published : 2008.05.08
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Abstract

The predictive equation of void-closure was developed to evaluate void crush ratio with respect to the process variables in the cogging process of a large round bar. The comprehensive finite element analysis with the process variables such as reduction ratio and die width ratio was carried out. The predictive equation of void-closure for cogging process was established on the basis of the regression analysis with the extensive FE analysis results and verified by comparing the predicted results with FEA results with various forging passes.

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