Evaluation of Metal Gainers for Advanced High Strength Steel Flanging

Paper #:
  • 2014-01-0985

Published:
  • 2014-04-01
DOI:
  • 10.4271/2014-01-0985
Citation:
Chen, X., Hsiung, C., Schmid, K., Du, C. et al., "Evaluation of Metal Gainers for Advanced High Strength Steel Flanging," SAE Technical Paper 2014-01-0985, 2014, doi:10.4271/2014-01-0985.
Pages:
7
Abstract:
Forming a metal gainer is a common technique used to gather material in a high stretch region along an edge in preparation for a subsequent flanging operation. This technique has proven to be successful for mild steels, but needs to be evaluated for the applicability to advanced high strength steels (AHSS). The Auto/Steel Partnership High Strength Stamping Team launched a project for this study. Experimental trials were conducted on gainer forming, trimming and flanging. Twelve (12) AHSS have been tested with tensile strengths ranging from 460 to 1240 MPa. Edge stretch limits for flanging have been evaluated and compared to flanging without gainers. Different trimming and flanging approaches have also been tried. The results show that metal gainers are not advantageous for flanging of higher strength AHSS.
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