DOI QR코드

DOI QR Code

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

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

  1. 원성연, 오상균, 2004, AZ31 마그네숨 합금 판재의 기계적 특성평가(1 ), 한국소성가공학회 춘계학술대회논문집 ,pp.53-56
  2. 이병호, 신광선, 이종수, 2004, AZ31 Mg 합금의 가공 조건에 따른 고온 성형성 연구, 한국소성가공학회 춘계학술대회논문집, pp. 80-83
  3. E Doege, K Droder, 2001, Sheet metal forming of magnesium wrought alloys-formability and process, J, Mater. Proc. Technol., Vol. 115, pp. 14-19 https://doi.org/10.1016/S0924-0136(01)00760-9
  4. S. Yoshihara, H. Nishimura, 2003, Formability enhancement in magnesium alloy stamping using a local heating and cooling technique circular cup deep drawing process, J. Mater. Proc. Technol., Vol. 142, pp. 609-613 https://doi.org/10.1016/S0924-0136(03)00248-6
  5. S. Tagawa, N. Koga., 2003, Effect of tool radius on formability during deep drawing of AZ31 magnesium alloy sheets, Journal of Japan Institute of Light Metal, Vol. 53, pp. 152-156 https://doi.org/10.2464/jilm.53.152
  6. N. Koga, 2001, Practical use of hard-carbon-coated tools in deep drawing of AZ31 magnesium alloy sheets, Journal of Japan Institute of Light Metal, Vol. 51, pp. 441-445 https://doi.org/10.2464/jilm.51.441
  7. 추동균, 김우영 , 이준희 , 강충길, 2004, 온간, 열 간 판재 성형을 위한 AZ31B의 기계적 성질 평가, 한국소성가공학회 추계학술대회논문집, pp. 256-259
  8. 김낙수, 김형종, 2002, 소성 가공과 해석, pp. 35-36
  9. 박상봉, 1996, 디프드로잉 공정설계 및 금형설계의 자동화 시스템에 관한 연구, 부산대학교 정밀기계공학과 박사학위 논문, pp. 32-36
  10. L. Shulkin, R. Posterado, A. Mustafa, L. Gary., 2000, Blank holder force (BHF) control in viscous pressure forming (VPF) of Sheet Metal, J. Mater. Proc. Technol., Vol. 98, pp. 7-16 https://doi.org/10.1016/S0924-0136(99)00300-3

Cited by

  1. Study of Forming Limit for Rotational Incremental Sheet Forming of Magnesium Alloy Sheet vol.41, pp.1, 2010, https://doi.org/10.1007/s11661-009-0043-7
  2. Ductile Fracture Prediction in Rotational Incremental Forming for Magnesium Alloy Sheets Using Combined Kinematic/Isotropic Hardening Model vol.41, pp.8, 2010, https://doi.org/10.1007/s11661-010-0235-1
  3. Micro-crack in zinc coating layer on boron steel sheet in hot deep drawing process vol.16, pp.5, 2015, https://doi.org/10.1007/s12541-015-0120-3