This paper is focused on the assessment of hot-forming limits and post-process properties of the 22MnB5 steel sheets heated to 950°C using rapid conductive heating, which is proposed as a fast and efficient method. An experimental axisymmetric bulging die set appropriate for conductive heating was designed and manufactured. Stretch-forming tests were conducted on rectangular specimens with three different widths until failure using dies at room temperature. The die set at room temperature performed passive cooling as well as deformation. The tests showed the limits of formability. Microhardness and microstructure analyses of the formed steel proved the bainitic–martensitic nature obtained at the end of the process. The results show good agreement with the published data collected by conventional furnace heating, which is a slower and more inefficient process.

本文着重于评估通过快速传导加热加热到950°C的22MnB5钢板的热成形极限和后处理性能，这是一种快速有效的方法。设计并制造了适合于传导加热的实验性轴对称凸出模具。在三个不同宽度的矩形样品上进行拉伸成型测试，直到在室温下使用模具将其破坏为止。设置在室温下的模具进行被动冷却以及变形。测试表明了可成形性的局限性。成形钢的显微硬度和显微组织分析证明了该过程结束时获得的贝氏体-马氏体性质。结果表明，该结果与常规炉加热所收集的公开数据吻合良好，