| 引用本文: | 肖海峰,王敏,张春,张宇.超高强钢板U形件热成形数值模拟及实验研究[J].材料科学与工艺,2014,22(6):107-112.DOI:10.11951/j.issn.1005-0299.20140619. |
| XIAO Haifeng,WANG Min,ZHANG Chun,ZHANG Yu.Numerical and experimental study on hot forming of U-beam of ultra high strength steel sheet[J].Materials Science and Technology,2014,22(6):107-112.DOI:10.11951/j.issn.1005-0299.20140619. |
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| 摘要: |
| 以Pamstamp有限元软件中22MnB5高强钢板的力学及热物理性能数据库为基础,建立了U形件的热冲压成形有限元分析模型,进行了热冲压成形及淬火全部过程的数值模拟分析,根据模拟结果,采用相同的工艺参数对该U形件热冲压成形过程进行了物理实验验证,结果表明:板料在900 ℃加热炉内加热保温5 min可达到理想的奥氏体状态,在板料加热过程中通氮气将氧气含量控制在10%以内的防氧化措施可明显降低氧化程度,提高工件表面质量,满足该工件的技术要求. |
| 关键词: 22MnB5 热冲压 数值模拟 氮气 |
| DOI：10.11951/j.issn.1005-0299.20140619 |
| 分类号:TG386 |
| 基金项目:国家自然科学基金资助项目(No.51205116)；湖北省教育厅B类项目(No.B2013084). |
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| Numerical and experimental study on hot forming of U-beam of ultra high strength steel sheet |
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XIAO Haifeng1,WANG Min1,ZHANG Chun1,ZHANG Yu2
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(1.Department of Material Science and Engineering,Hubei University of Automobile Technology,Shiyan 442002,China; 2.Dongfeng Auto-Company Institute of Manufacture Technology,Shiyan 442002,China)
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| Abstract: |
| On the basis of mechanics and thermal physical properties of 22MnB5, a finite element simulation model was set up and the numerical simulation for the whole process of hot stamping and quenching of Automobile U-beam parts was made by PAMSTAMP software. According to the simulation, a physical experiment was done. Results show that 5 minutes heating in the heating furnace at 900 ℃ can achieve ideal austenite state of the U-beam parts. The method of blowing nitrogen into furnace during heating process can obviously decrease the oxidation degree to below 10%, which improves the quality of the sheet. |
| Key words: 22MnB5 hot stamping numerical simulation nitrogen |
