The invention provides hot forming steel, a preparation method thereof and an automobile part. The preparation method comprises the following steps that a steel ingot is rolled, and rolled hard steel is prepared; a chromium layer is formed on the surface of the rolled hard steel through electroplating, then annealing treatment is conducted, a chromium-iron alloy layer is formed, and hot forming steel is obtained; wherein in the chromium-iron alloy layer, the mass ratio of chromium is greater than or equal to 15%. According to the preparation method, the hot forming steel with high-temperature oxidation corrosion resistance and good weldability can be obtained.

    本申请提供一种热成形钢及其制备方法、汽车零部件。该制备方法包括如下步骤:将钢锭进行轧制处理,制备轧硬钢;在所述轧硬钢的表面电镀形成铬层,然后进行退火处理,形成铬‑铁合金层,得到热形成钢;其中,在所述铬‑铁合金层中,铬的质量占比大于或等于15%。该制备方法能获得兼具抗高温氧化锈蚀和良好的可焊接性能的热成形钢。


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    Title :

    Hot forming steel, preparation method thereof and automobile part


    Additional title:

    热成形钢及其制备方法、汽车零部件


    Contributors:
    LI LEI (author) / LI GUOCANG (author) / LIANG LIANG (author) / LIU XUHUI (author) / WU JIANSHENG (author) / TIAN FEI (author) / LIU JINGJIA (author)

    Publication date :

    2025-03-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C25D Verfahren für die elektrolytische oder elektrophoretische Herstellung von Überzügen , PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B62D MOTOR VEHICLES , Motorfahrzeuge



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