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。
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.
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