Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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The Effect of Forming Parameter on Mechanical Properties in Hot Bending Process of Boron Steel Sheet

보론강판의 열간 벤딩 공정에서 성형인자가 기계성질에 미치는 영향

  • 권기영 (부산대학교 기계공학부 대학원) ;
  • 신보성 (부산대학교 기계공학부) ;
  • 강충길 (부산대학교 기계공학부, 정밀정형 및 금형가공 연구소(ERC/NSDM))
  • Received : 2009.08.06
  • Accepted : 2010.05.06
  • Published : 2010.07.01
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Abstract

In the hot press forming process (HPF), a martensitic structure is obtained by controlling the cooling rate when cooling a boron sheet that is heated up to over $900^{\circ}C$. The HPF process has various advantages such as the improvement in formability and material properties and minimal spring back of the deformed materials. The factors related to the cooling rate depend on the heat transfer characteristics between heated materials and dies. Therefore, in this study, the cooling rate is controlled by adjusting the heat transfer coefficient of the material at the pressing process. And, the mechanical properties and microstructure of the deformed material is demonstrated during the HPF process where cold dies are used to form the heated steel plate. This is achieved by varying the major forming conditions that control the cooling rate regarded as the most important process parameter.

Keywords

References

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