The skeleton member is formed by hot stamping a steel plate, the skeleton member has a closed cross-section portion in which a cross-section perpendicular to the longitudinal direction is a closed cross-section, and the closed cross-section portion has at least one flat portion having a radius of curvature larger than the maximum outer dimension of the cross-section. The Vickers hardness of the plate thickness center portion of the reference flat portion is 300 Hv or more, the width of the reference flat portion is 2.0 times or less the effective width, and the standard deviation ratio obtained by dividing the standard deviation of the hardness frequency distribution of the surface layer portion of the reference flat portion by the standard deviation of the hardness frequency distribution of the plate thickness center portion of the reference flat portion is less than 1.0.

    该骨架部件是通过将钢板热冲压而形成的骨架部件,骨架部件具有与长度方向垂直的截面是闭截面的闭截面部,闭截面部具有作为曲率半径比该截面的最大外形尺寸大的部位的至少1个平坦部位,基准平坦部位中的板厚中心部的维氏硬度是300Hv以上,基准平坦部位的宽度是有效宽度的2.0倍以下,将基准平坦部位的表层部的硬度频率分布的标准偏差除以基准平坦部位的板厚中心部的硬度频率分布的标准偏差而求出的标准偏差比小于1.0。


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    Titel :

    Framework component


    Weitere Titelangaben:

    骨架部件


    Beteiligte:
    AITOH TAKAHIRO (Autor:in) / TODA YURI (Autor:in)

    Erscheinungsdatum :

    05.12.2023


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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