Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Simulation-based Stamping Process Design for a Pulsator Cover of a Washing Machine with Ferritic Stainless Steel Sheet

페라이트계 스테인리스 판재 적용을 위한 세탁기 회전날개의 전산 해석기반 성형공정설계

  • Kim, Se-Ho (School of Automotive, Industrial and Mechanical Engineering, Daegu University) ;
  • Kim, Kee-Poong (Automotive Components Center, Korea Institute of Industrial Technology)
  • 김세호 (대구대학교 자동차.산업.기계공학부) ;
  • 김기풍 (한국생산기술연구원 동력부품센터)
  • Received : 2010.10.04
  • Accepted : 2010.11.18
  • Published : 2011.03.01
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Abstract

This paper replaces a conventional austenitic stainless steel sheet to a ferritic stainless steel for the cost reduction of a pulsator cover of a washing machine. However, ferritic stainless steel has poor formability in comparison with austenitic one. The low formability of ferritic steel results in problems during stamping such as fracture, wrinkling, shape inaccuracy and so on. Design modification of the stamping tool is carried out with the aid of the finite element analysis for multistage stamping process of the pulsator cover. The simulation results show that fracture occurs on top of the product while wrinkles are generated by the excess metal near the wing part. Modification of the initial stamping die is performed to improve metal flow and to eliminate problems during the stamping process. Simulation with the modified design fully demonstrates that safe forming is possible without inferiorities.

Keywords

References

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