The invention discloses a preparation method of an automobile door ring, the automobile door ring and an automobile, and the preparation method of the automobile door ring comprises the following steps: sequentially welding an A column roof side rail reinforcing plate, an A column reinforcing plate, a threshold reinforcing plate, a B column reinforcing plate and a side wall upper reinforcing plate to form an annular plate blank; the annular plate blank is subjected to cold stamping forming, and the automobile door ring is obtained; wherein the A-pillar roof side rail reinforcing plate and the B-pillar reinforcing plate are prepared from hot forming blanks, and the A-pillar reinforcing plate, the doorsill reinforcing plate and the side wall upper reinforcing plate are prepared from cold forming blanks. According to the automobile door ring, the light weight requirement and the deformation energy absorption requirement can be met by using the cold blank and the hot blank in a combined mode, the door ring blank obtained through welding can be formed through cold stamping, a roller hearth heating furnace and a complex hot forming die with a water channel for cooling do not need to be additionally used, production line investment is saved, and good economic benefits are achieved.

    本发明公开了一种汽车门环的制备方法、汽车门环及汽车,该汽车门环的制备方法包括:将A柱上边梁加强板、A柱加强板、门槛加强板、B柱加强板和侧围上加强板依次焊接,形成环状板坯;对所述环状板坯进行冷冲压成型,获取汽车门环;其中,所述A柱上边梁加强板和B柱加强板由热成型坯料制备而成,所述A柱加强板、门槛加强板和侧围上加强板由冷成型坯料制备而成。该汽车门环通过组合使用冷热坯料能够兼顾轻量化要求和形变吸能要求,也使焊接获取的门环坯料能够使用冷冲压成型,无需额外使用辊底加热炉与带水道冷却的复杂热成型模具,节省了产线投入,具有良好的经济效益。


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    Title :

    Preparation method of automobile door ring, automobile door ring and automobile


    Additional title:

    汽车门环的制备方法、汽车门环及汽车


    Contributors:
    CHEN LEI (author) / CHEN QILIN (author) / XING YANG (author) / ZHANG HAIJUN (author)

    Publication date :

    2025-03-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B23P Sonstige Metallbearbeitung , OTHER WORKING OF METAL / B62D MOTOR VEHICLES , Motorfahrzeuge



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