Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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The Drawbility Estimation in warm and Hot Forming of AB31B Magnesium Sheet

AZ31B 마그네슘판재의 온간, 열간 딮드로잉 성형성 평가

  • 추동균 (부산대학교 정밀기계공학과) ;
  • 오세웅 (부산대학교 정밀기계공학과) ;
  • 이준희 (동아대학교 신소재공학과) ;
  • 강충길 (부산대학교 기계공학부)
  • Published : 2005.10.01
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Abstract

The drawability of AZ31B magnesium sheet is estimated at various temperatures (200, 250, 300, 350, $400^{\circ}C$), forming speeds (20, 50, 100mm/min), thicknesses (0.8, 1.4mm) and blank holding forces (2.0, 2.8, 3.4kN). The deep drawing process (DDP) of circular cup is used in forming experiments. The results of deep drawing experiments show that the drawability is well at the range from 250 to $300^{\circ}C$, 50mm/min forming speed and 2.0kN blank holding force. The 0.8mm magnesium sheets were deformed better than 1.4 mm. Blank holding force was controlled in order to improve drawability and prevent the change of cup thickness. When blank holding force was controlled, tearing and thickness change were decreased and limit drawing ratio was improved from 2.1 to 3.0.

Keywords

References

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