The invention discloses bainite non-quenched and tempered steel, a steering drop arm and a preparation method of the steering drop arm. The bainite non-quenched and tempered steel comprises the following components, by mass: less than or equal to 0.32% of C, more than or equal to 0.60% and less than or equal to 1.50% of Si, more than or equal to 1.40% and less than or equal to 2.05% of Mn, less than or equal to 0.01% of P, less than or equal to 0.025% and less than or equal to 0.035% of S, less than or equal to 0.033% of Ti, less than or equal to 0.54% of Cr and the balance of Fe and inevitable impurities. According to the bainite non-quenched and tempered steel disclosed by the embodiment of the invention, low-carbon steel is adopted, Cr and Ti elements are added, and the content of S elements is controlled, so that the purpose of reducing the cost is achieved. And meanwhile, the bainite non-quenched and tempered steel has higher strength and good plasticity, and can meet the requirements of the automobile steering plumbing arm on strength and toughness.

    本发明公开了一种贝氏体非调质钢、转向垂臂及转向垂臂的制备方法。所述贝氏体非调质钢,以质量百分比计,包括C:≤0.32%、Si:0.60%≤Si≤1.50%、Mn:1.40%≤Mn≤2.05%、P:P≤0.01%、S:0.025%≤S≤0.035%、Ti:Ti≤0.033%、Cr:Cr≤0.54%,余量的Fe和不可避免的杂质。根据本发明实施例的贝氏体非调质钢,采用低碳钢增加Cr和Ti元素,控制硫S元素含量,达到降低成本的目的。同时具有较高的强度和有良好的塑性,可满足汽车转向垂臂对于强度和韧性的要求。


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    Title :

    Bainite non-quenched and tempered steel, steering drop arm and preparation method of steering drop arm


    Additional title:

    贝氏体非调质钢、转向垂臂及转向垂臂的制备方法


    Contributors:
    XU HAI (author) / WANG ZHONGXING (author) / WANG BAOKUN (author) / YAN ZHI (author) / ZHANG TAO (author) / ZHANG ZHE (author)

    Publication date :

    2022-02-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C22C Legierungen , ALLOYS / B21J FORGING , Schmieden / B21K MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS , Herstellen von Schmiede- oder Presserzeugnissen aus Metall, z.B. Hufeisen, Nieten, Bolzen oder Rädern / B62D MOTOR VEHICLES , Motorfahrzeuge / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS



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