ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2020, Vol. 41 ›› Issue (6): 77-80.

• 组织和性能 • 上一篇    

700 MPa级高强热轧双相钢DP700的开发

殷胜1,2, 张建苏3, 朱红丹4   

  1. 1西北工业大学材料科学与工程学院,西安710072 ;
    2宝钢股份梅钢公司技术中心,南京210039 ;
    3宝山钢铁股份有限公司研究院,上海201900;
    4宝钢股份梅钢公司制造管理部,南京210039)
  • 收稿日期:2020-06-10 出版日期:2020-12-01 发布日期:2022-05-09
  • 作者简介:殷 胜(1980-),男,硕士(2004年南京理工大学),高级工程师,2002年南京理工大学(本科)毕业,双相钢产品研发。

Research and Development of 700 MPa Grade High Strength Hot Rolled Dual Phase Steel DP700

Yin Sheng1,2, Zhang Jiansu3 , Zhu Hongdan4   

  1. 1 School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 710072;
    2 R&D Center for Meisteel of Baosteel Research Institue, Nanjing 210039 ;
    3 R&D Center of Baosteel Research Institue, Shanghai 201900 ;
    4 Manufacturing department of Baosteel Meishan Co,Nanjing 210039)
  • Received:2020-06-10 Published:2020-12-01 Online:2022-05-09

摘要: 阐述了在宝钢梅山基地1780热轧机生产线上开发的700MPa级热轧双相钢DP700(/%:C 0.08~0.12,Si 0.08~0.12,Mn 1.30~1.150,P≤0.015,S≤0.005,Cr 0.50~0.70,Ca≥0.0015,Al≥0.015)工艺和性能,该钢板表面质量优良,屈服强度≥400 MPa,抗拉强度≥700 MPa,断后伸长率≥17%(b=20 mm,L0=80 mm),扩孔率≥35%,50%存活率的疲劳极限达475 MPa。结果表明,DP700钢是一种具有良好应用前景的新型汽车零部件材料。

Abstract: The process and properties of 700MPa grade hot rolled dual phase steel DP700 (/% : C 0.08 ~ 0.12 ,Si 0.08 ~0.12,Mn 1.30 ~ 1.150,P≤ 0.015,S ≤0,005 ,Cr 0.50 ~0.70,Ca ≥0.0015, Al≥0.015) development at Baosteel Meishan 1780 hot rolling mill are summarized. The developed plate has superior surface quality, its properties are Yield strength≥400 MPa,Tensile strength≥700 MPa,Elongation after fracture N≥ 17% (b = 20 mm, L0= 80 mm) , Hole expansion rate ≥35% ,50% survival rate fatigue limit 475 MPa. Results show that the steel DP700 is one of new material for Auto industry with good application prospect.