Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Springback Control in the Forming Processes for High-Strength Steel Sheets

고강도 강판 성형 공정의 스프링백 제어

  • 양우열 (한양대학교 대학원) ;
  • 이승열 (한양대학교 CPRC) ;
  • 금영탁 (한양대학교 기계공학부) ;
  • 황진영 (현대자동차 금속재료연구팀) ;
  • 윤치상 (현대자동차 금속재료연구팀) ;
  • 신철수 (현대자동차 금속재료연구팀) ;
  • 조원석 (현대자동차 금속재료연구팀)
  • Published : 2003.12.01
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Abstract

Tn order to develop springback control technology for high-strength steel sheets, several studies have been conducted: dome stretching test, stepped s-rail forming and springback measurement, and optimally shaped initial blank design. First, to find out the formability of TRIP60, dome stretching test was performed. Next, the stepped s-rail die, which was designed to form a channel type panel with large twist and wall curl, was manufactured and used to evaluate the effect of controlling forming variables, such as blank holding force and flange amount on the springback. Furthermore, new measurement method of the springback was introduced to define wall curl and twist in geometrically complex panels. Finally, the optimally shaped initial blank was employed to verify one of the best ways to control the springback in channel type. high-strength sheet panels.

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References

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  1. A Study on the Springback of High-Strength TRIP Steel vol.13, pp.5, 2004, https://doi.org/10.5228/KSPP.2004.13.5.409
  2. Bead Optimization to Reduce Springback of Sheet Metal Forming using High Strength Steel vol.23, pp.4, 2014, https://doi.org/10.7735/ksmte.2014.23.4.350