The invention relates to axle housing steel capable of controlling strength reduction after hot forming, a preparation method thereof and an axle housing, and belongs to the technical field of steel smelting and rolling. The axle housing steel capable of controlling strength reduction after hot forming is composed of the following chemical elements of, in percentage by mass, 0.26%-0.30% of C, 0%-0.1%, 1.8%-2.2% of Mn, less than or equal to 0.010% of P, less than or equal to 0.005% of S, 0.02%-0.05% of Al, 0.01%-0.03% of V, 0%-0.003% of N, and the balance Fe and inevitable impurities. The yieldstrength of the axle housing steel plate is larger than 600 MPa, the tensile strength of the axle housing steel plate is larger than 700 MPa, the elongation of the axle housing steel plate is largerthan 20%, the plate shape and the surface quality are excellent, the yield strength after hot forming is larger than 550 MPa, the tensile strength of the axle housing steel plate is larger than 650 MPa, and the excellent surface quality effect is achieved.

    本发明涉及一种控制热成形后强度下降的桥壳钢及其制备方法、桥壳,属于钢铁冶炼与轧制技术领域,本发明提供的控制热成形后强度下降的桥壳钢由如下质量分数的化学元素组成:C:0.26‑0.30%;Si:0‑0.1%;Mn:1.8‑2.2%;P:≤0.010%;S:≤0.005%;Al:0.02‑0.05%;V:0.01‑0.03%;N:0‑0.003%;其余为Fe及不可避免的杂质;该桥壳钢板的屈服强度大于600MPa,抗拉强度大于700MPa,延伸率大于20%,板形与表面质量优,热成形后的屈服强度大于550MPa,抗拉强度大于650MPa,并具有优异的表面质量的效果。


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    Title :

    Axle housing steel capable of controlling strength reduction after hot forming, preparation method of axle housing steel and axle housing


    Additional title:

    一种控制热成形后强度下降的桥壳钢及其制备方法、桥壳


    Contributors:
    HUI YAJUN (author) / WU KEMIN (author) / TIAN ZHIHONG (author) / LI FEI (author) / CHEN BIN (author) / LIU KUN (author) / LI QIUHAN (author) / ZHOU NA (author) / CAO JIE (author) / XIAO BAOLIANG (author)

    Publication date :

    2020-08-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C22C Legierungen , ALLOYS / B60B VEHICLE WHEELS , Räder für Fahrzeuge / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS



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