The invention relates to a manufacturing method of an ultrahigh variable-strength back row seat backrest pipe frame and a manufactured pipe frame part, and belongs to the field of automobile part production. The back row seat backrest pipe frame part is of a frame structure defined by pipe-shaped assemblies, reinforcing areas are arranged on the frame structure, a transition area is arranged between the two areas with different strength, and the frame structure forms a variable-strength structure with the same section and the strength distributed in a variable mode. The method specifically comprises the following implementation steps that a plate of a hot forming material is machined into a tubular assembly with the final section shape; the formed tubular assembly is heated, and online bending is conducted on the heated tubular assembly; the bent pipe fitting is subjected to heat treatment strengthening; and the pipe fitting assemblies are connected end to end to form a frame structure. By means of the manufacturing method, the bending manufacturing difficulty of the ultrahigh-strength steel pipe part is reduced, the formed part with the variable strength characteristic is good in structural performance, and light weight can be achieved.

    本发明涉及到一种超高变强度后排座椅靠背管框的制造方法及制造的管框部件,属于汽车零部件生产领域。该后排座椅靠背管框零件为管型组件围合形成的框架结构,框架结构上设有强化区域,所述的两个不同强度区域之间设有过渡区域,所述框架结构自身形成同截面但强度变化分布的变强度结构,其具体包括如下实现步骤:将热成形材料的板料加工成为最终截面形状的管型组件;对成形的管型组件加热,并对加热中的管型组件进行在线弯曲;对弯曲后的管件进行热处理强化;将管件组件首尾连接形成框架结构。本发明的制造方法降低了超高强钢管件零件弯曲制造难度,成形后具有变强度特点的零件结构性能好,可实现轻量化。


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    Title :

    Variable-strength back row seat backrest pipe frame part and manufacturing method thereof


    Additional title:

    一种变强度后排座椅靠背管框零件及其制作方法


    Contributors:
    XU DONGKAI (author) / YUAN JINGXI (author) / XIAO HUA (author) / ZHANG JICHAO (author) / CHEN ZIKAI (author) / SHI LEI (author)

    Publication date :

    2023-04-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs



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