公开(公告)号：US20230060392A1

公开(公告)日：2023-03-02

申请号：US17784379

申请日：2020-12-17

Applicant: POSCO

Inventor： Se Il LEE ,  Hyunwoo MUN

IPC: C21D9/46 ,  C21D8/12 ,  C21D6/00 ,  C22C38/14 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  H01F1/147

Abstract: A double-oriented electrical steel sheet according to an example of the present invention comprises, by weight 2.0 to 4.0 wt % of Si, 0.01 to 0.04 wt % of Al, 0.0004 to 0.02 wt % of S, 0.05 to 0.3 wt % of Mn, at most 0.01 wt % (exclusive of 0 wt %) of N, at most 0.005 wt % (exclusive of 0 wt %) of C, 0.005 to 0.15 wt % of P, 0.001 to 0.005 wt % of Ti, and 0.0001 to 0.005 wt % of Mg, with the balance being Fe and other inevitable impurities, wherein the area fraction of crystal grains having an orientation within 15° from {100} is 60 to 99%, and the area fraction of crystal grains having an orientation within 15° from {100} is 1 to 30%.

公开(公告)号：US20230021013A1

公开(公告)日：2023-01-19

申请号：US17784444

申请日：2020-12-17

Applicant: POSCO

Inventor： Se Il LEE ,  Hyunwoo MUN

IPC: C22C38/08 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/04 ,  C22C38/16 ,  C21D9/46 ,  C21D8/02

Abstract: A non-oriented electrical steel sheet according to an embodiment of the present invention includes, in wt %, Si: 1.5% or less, C: 0.01% or less (excluding 0%), Mn: 0.03 to 3%, P: 0.01 to 0.2%, S: 0.001 to 0.02%, Al: 0.01% or less (excluding 0%), N: 0.005% or less (excluding 0%), Cu: 0.02 to 0.3%, 0.0001 to 0.005 wt % of Ca and Mg either alone or in total, 0.001 to 0.2 wt % of Sb and Sn either alone or in total, and a balance of Fe and inevitable impurities.