SEAT BACK
    1.
    发明申请

    公开(公告)号:US20250145067A1

    公开(公告)日:2025-05-08

    申请号:US18715481

    申请日:2022-12-01

    Applicant: POSCO CO., LTD

    Inventor: Jaehyun Kim

    Abstract: The present invention provides a seat back comprising: an upper frame; a first side frame coupled to one side of the upper frame; and a first belt bracket which is coupled to a section at which the upper frame and the first side frame are connected, and which guides a seat belt. The first belt bracket comprises: a front bracket disposed in front of the section at which the upper frame and the first side frame are connected; and a rear bracket which is manufactured so as to be separable from the front bracket, is coupled to the front bracket, and is disposed behind the section at which the upper frame and the first side frame are connected.

    Non-oriented electrical steel sheet and manufacturing method therefor

    公开(公告)号:US12272474B2

    公开(公告)日:2025-04-08

    申请号:US18268784

    申请日:2021-12-16

    Applicant: POSCO Co., Ltd

    Abstract: A non-oriented electrical steel sheet according to an exemplary embodiment of the present invention contains, by wt %, 0.005% or less (excluding 0%) of C, 1.2 to 2.7% of Si, 0.4 to 2.0% of Mn, 0.005% or less (excluding 0%) of S, 0.3% or less (excluding 0%) of Al, 0.005% or less (excluding 0%) of N, 0.005% or less (excluding 0%) of Ti, and a balance of Fe and inevitable impurities, wherein the non-oriented electrical steel sheet satisfies the following Expression 1, and a volume fraction of grains having an angle of 15° or less between a {112} plane and a rolling plane in the steel sheet is 40 to 60%. 0.3 ≤ ( [ Si ] + [ Al ] - 1 . 5 ) / [ Mn ] ≤ 0 . 8 ⁢ 5 [ Expression ⁢ 1 ] (In Expression 1, [Si], [Al], and [Mn] represent contents (wt %) of Si, Al, and Mn, respectively.)

    COLD ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING

    公开(公告)号:US20250043404A1

    公开(公告)日:2025-02-06

    申请号:US18716476

    申请日:2022-12-16

    Applicant: POSCO CO., LTD

    Inventor: Jaiik Kim

    Abstract: A cold rolled steel sheet according to an exemplary embodiment of the present invention comprises, by wt %: C: 0.01 to 0.10%; Mn: 0.1 to 0.4%; Al: 0.01 to 0.10%; P: 0.003 to 0.020%; N: 0.001 to 0.006%; S: 0.015% or less; Cr: 0.1 to 0.4%; B: 0.0005 to 0.0035%; Ni: 0.04 to 0.10%; and the balance Fe and other unavoidable impurities, and comprises a (Cr—B)(C—N)-based composite precipitate having a size of 0.01 to 0.1 μm, wherein a [I 222+I 554]/I 200 texture ratio is 5.0 to 10.0, an earing rate is less than 3.0%, and an alloying rate of an alloy layer may be 5 to 15%.

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