Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Blank Shape Design Process for a Hot Stamped Front Pillar and its Experimental Verification

프론트필러의 핫스템핑 공정설계를 위한 블랭크형상의 최적화 연구

  • 김지태 (현대하이스코 기술연구소 경량화연구팀) ;
  • 김병민 (부산대학교 일반대학원 기계공학부 정밀가공시스템전공) ;
  • 강충길 (정밀정형및금형가공연구소)
  • Received : 2011.12.09
  • Accepted : 2012.04.04
  • Published : 2012.06.01
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Abstract

Hot stamping is a forming method that offers various advantages such as superior mechanical properties, good formability, and very small springback. However, relatively large-sized parts, such as front pillars, exhibit poor formability when hot stamped due to the limited material flow and thickness reduction imparted by the process. This reduction in thickness can also lead to cracks. One of the reasons is the relatively high friction between the sheet and the die. In this study, in order to obtain the optimal conditions for hot stamping of front pillars, various process parameters were studied and analyzed using the sheet forming software, J-STAMP. The effects of various parameters such as the die structure, blank shape, blank holding force, punch speed, clearance(upper and lower dies) and distance block were analyzed and compared.

Keywords

References

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