The effects of magnetizer parameters on the temperature field of high-strength steel blanks are investigated through the combination of experiment and simulation. An electromagnetic-temperature three-dimensional finite element model is simulated. Numerical simulation indicates the spacing in the width direction significantly affects the temperature field of steel blanks, and the optimal spacing of magnetic ring group to generate a rectangular low-temperature zone is 10 mm. The customizability of district-controlled induction heating process is verified, and then, the differentiated temperature field of automobile B-pillar is tailored. The temperature field simulation results are validated through heating experiments. Hot stamping experiment shows that a reduced U-shape B-pillar with tailored properties is generated after district-controlled induction heating-hot stamping. The temperature fields of B-pillar with two dimensions indicate this new process satisfies the demand of automobile components with tailored properties, and the parameters of magnetizers play the most important role in the new process.

通过实验和模拟相结合的方法，研究了充磁机参数对高强度钢坯温度场的影响。模拟了电磁温度三维有限元模型。数值模拟表明，沿宽度方向的间距对钢坯的温度场有显着影响，产生矩形低温区的磁环组的最佳间距为10mm。验证了区域控制感应加热过程的可定制性，然后定制了汽车B柱的差异温度场。通过加热实验验证了温度场模拟结果。热冲压实验表明，在区域控制的感应加热-热冲压之后，会生成具有定制性能的减小的U形B柱。二维B柱的温度场表明，该新工艺满足了具有定制性能的汽车零部件的需求，而充磁机的参数在该新工艺中起着最重要的作用。