公开(公告)号：US20220010402A1

公开(公告)日：2022-01-13

申请号：US17297114

申请日：2019-11-28

申请人： POSCO

发明人： Hyung Don JOO ,  Kyung-Jun KO ,  Chang Soo PARK ,  Jae Kyoum KIM ,  Sang-Woo LEE ,  Jin-Wook SEO

IPC分类号： C21D9/46 ,  C21D6/00 ,  C21D8/12 ,  C22C38/60 ,  C22C38/08 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  H01F1/147

摘要： A grain-oriented electrical steel sheet according to an embodiment of the present invention includes: in wt %, Si at 1.0 to 7.0%, Mn at 0.5% or less (excluding 0%), Al at 0.005% or less (excluding 0%), S at 0.0055% or less (excluding 0%), one or more of Ba and Y at 0.005 to 0.5%, one or more of Sn at 0.02 to 0.15%, Sb at 0.01 to 0.08%, and Ni at 0.02 to 0.5%, and the balance of Fe and inevitable impurities.

公开(公告)号：US20190017140A1

公开(公告)日：2019-01-17

申请号：US16065002

申请日：2016-12-20

申请人： POSCO

发明人： Chang Soo PARK ,  Min Soo HAN ,  Jong Ho PARK ,  Hyung Don JOO ,  Yun Su KIM

IPC分类号： C21D8/12 ,  C22C38/60 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： A manufacturing method of an oriented electrical steel sheet according to an exemplary embodiment of the present invention includes: a step of manufacturing a steel slab including one kind or more among Si at 2 to 7%, Sn at 0.03 to 0.10%, and Sb at 0.01 to 0.05% as wt %; a step of hot-rolling the steel slab to manufacture a hot rolled sheet; a step of cold-rolling the hot rolled sheet to manufacture a cold rolled sheet; a step of decarburizing and nitriding the cold rolled sheet for primary recrystallization annealing; a step of coating and drying an annealing separating agent on the primary recrystallization-annealed cold rolled sheet; and a step of secondary recrystallization-annealing the cold rolled sheet coated with the annealing separating agent.

公开(公告)号：US20190382860A1

公开(公告)日：2019-12-19

申请号：US16471868

申请日：2017-12-20

申请人： POSCO

发明人： Min Soo HAN ,  Jong-Tae PARK ,  Yun Su KIM ,  Chang Soo PARK

IPC分类号： C21D3/04 ,  C21D8/12 ,  C21D9/46 ,  C22C38/02 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/60

摘要： The present invention has been made in an effort to provide an annealing separator component for an oriented electrical steel sheet, an oriented electrical steel sheet, and a manufacturing method thereof. According to an exemplary embodiment of the present invention, an annealing separator composition for an oriented electrical steel sheet, includes: 100 weight parts of at least one of magnesium oxide and magnesium hydroxide; and 5 to 200 weight parts of aluminum hydroxide.

公开(公告)号：US20160322138A1

公开(公告)日：2016-11-03

申请号：US15107905

申请日：2014-12-17

申请人： POSCO

发明人： Min Soo HAN ,  Chang Soo PARK ,  Dae-Uk KIM ,  Ho-Kyung SHIM ,  Soon-Bok PARK

IPC分类号： H01F1/147 ,  C21D1/30 ,  C01B35/14 ,  C23C22/08 ,  C09D1/00 ,  H01B3/10 ,  C21D9/46 ,  C23C22/20

CPC分类号： C01B35/143 ,  C09D1/00 ,  C21D1/30 ,  C21D9/46 ,  C23C22/20 ,  C23C22/22 ,  C23C22/74 ,  H01B3/10 ,  H01F1/18

摘要： A coating agent for an electrical steel sheet and a manufacturing method therefor are disclosed. A coating agent for an electrical steel sheet according to an example embodiment of the present invention includes a metal phosphate derivative solution, colloid silica, chromium oxide, and solid silica, and a solvent, wherein the metal phosphate derivative is a single material of a magnesium phosphate derivative or a mixed material of an aluminum phosphate derivative and a magnesium phosphate derivative, and in the mixed material, an amount of aluminum phosphate derivative is 10 wt % or less (not including 0%).

摘要翻译： 公开了一种电工钢板用涂布剂及其制造方法。 根据本发明的一个示例性实施方案的电工钢板用涂料包括金属磷酸盐衍生物溶液，胶体二氧化硅，氧化铬和固体二氧化硅以及溶剂，其中金属磷酸盐衍生物是镁的单一材料 磷酸酯衍生物或磷酸铝衍生物和磷酸镁衍生物的混合材料，在该混合材料中，一定量的磷酸铝衍生物为10重量％以下（不含0重量％）。

公开(公告)号：US20230025678A1

公开(公告)日：2023-01-26

申请号：US17786508

申请日：2020-12-17

申请人： POSCO

发明人： Hyung Don JOO ,  Il-Nam YANG ,  Junesoo PARK ,  Chang Soo PARK

IPC分类号： H01F1/147 ,  H01F41/02 ,  C21D9/46 ,  C21D8/12 ,  C21D1/06 ,  C21D6/00 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C23C8/26 ,  C23C8/80

摘要： A non-oriented electrical steel sheet according to an embodiment of the present invention includes, in wt%, Si: 2.2 to 4.5 %, Mn: 0.5 % or less (excluding 0 %), AI: 0.001 to 0.5 %, Sn: 0.07 to 0.25 %, and N: 0.0010 to 0.0090 %, and the balance of Fe and inevitable impurities.
A surface layer portion existing in an inner direction from a surface of the steel sheet and a central portion existing inside the surface layer portion are included, and the central portion includes N at 0.005 wt% or less, and the surface layer portion further includes N at 0.001 wt% or more compared to the central portion; and the surface layer portion has an average grain size of 60 µm or less, while the central portion has an average grain size of 70 to 300 µm.

公开(公告)号：US20210130937A1

公开(公告)日：2021-05-06

申请号：US16472485

申请日：2017-12-20

申请人： POSCO

发明人： Kyu-Seok HAN ,  Chang Soo PARK ,  Jae-Kyoum KIM ,  Jong-Tae PARK

IPC分类号： C22C38/06 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C21D8/02 ,  C21D9/00 ,  C21D9/46 ,  C22C38/14

摘要： A grain-oriented electrical steel sheet according to an embodiment of the prevent invention comprises: Si: 1.0% to 7.0%, C: 0.005% or less (excluding 0%), P: 0.0010 to 0.1%, Sn: 0.005 to 0.2%, S: 0.0005 to 0.020%, Se: 0.0005 to 0.020% and B: 0.0001 to 0.01% by weight, and the remainder comprising Fe and other inevitable impurities.

公开(公告)号：US20190010572A1

公开(公告)日：2019-01-10

申请号：US16065774

申请日：2016-12-23

申请人： POSCO

发明人： Min Soo HAN ,  Hyung Don JOO ,  Jong Ho PARK ,  Chang Soo PARK ,  Byung Deug HONG

IPC分类号： C21D9/46 ,  C22C38/02 ,  C22C38/00 ,  C21D8/12 ,  C21D8/00 ,  C21D6/00

摘要： A method for manufacturing grain-oriented electrical steel sheet comprises: manufacturing a steel slab comprising at least one of 2 wt % to 7 wt % of Si, 0.03 wt % to 0.10 wt % of Sn, and 0.01 wt % to 0.05 wt % of Sb; hot-rolling the steel slab to produce a hot-rolled sheet; cold-rolling the hot-rolled sheet to produce a cold-rolled sheet; primary recrystallization-annealing the cold-rolled sheet; applying an annealing separator to the primary recrystallization-annealed cold-rolled sheet and drying the same; and secondary recrystallization-annealing the cold-rolled sheet on which the annealing separator is applied. The primary recrystallization-annealing is performed so that the thickness of an oxide layer formed on the surface of the cold-rolled sheet is 0.5 μm to 2.5 μm, and the oxygen amount of the oxide layer is 600 ppm or more after the primary recrystallization-annealing, and in which a forsterite (Mg2SiO4) film can be removed in the secondary recrystallization-annealing.

公开(公告)号：US20230235434A1

公开(公告)日：2023-07-27

申请号：US18128650

申请日：2023-03-30

申请人： POSCO CO., LTD

发明人： Jae Kyoum KIM ,  Kyu-Seok HAN ,  Chang Soo PARK ,  Jin-Wook SEO ,  Yujun PARK

IPC分类号： C22C38/16 ,  C21D8/02 ,  C21D9/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

CPC分类号： C22C38/16 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D9/0081 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

摘要： An oriented electrical steel sheet according to an embodiment of the present invention includes, in a unit of wt %, Si at 1.0 wt % to 5.0 wt %, C at 0.005 wt % or less (excluding 0 wt %), Mn at 0.001 wt % to 0.1 wt %, Cu at 0.001 wt % to 0.1 wt %, S at 0.001 wt % to 0.020 wt %, Se at 0.001 wt % to 0.050 wt %, Al at 0.0005 wt % to 0.010 wt %, N at 0.0005 wt % to 0.005 wt %, and the remainder of Fe and inevitable impurities.
The oriented electrical steel sheet according to the embodiment of the present invention satisfies Equation 1.


16≤(10×[Mn]+[Cu])/([S]+[Se])+(0.02−[Al])/[N]≤20  [Equation 1]

(In Equation 1, [Mn], [Cu], [S], [Se], [Al], and [N] represent contents (wt %) of Mn, Cu, S, Se, Al, and N, respectively.)

公开(公告)号：US20210062309A1

公开(公告)日：2021-03-04

申请号：US16957943

申请日：2018-05-17

申请人： POSCO

发明人： Jae Kyoum KIM ,  Kyu-Seok HAN ,  Chang Soo PARK ,  Jin-Wook SEO ,  Yujun PARK

IPC分类号： C22C38/16 ,  C22C38/04 ,  C22C38/02 ,  C22C38/06 ,  C22C38/00 ,  C21D8/02 ,  C21D9/00

摘要： An oriented electrical steel sheet according to an embodiment of the present invention includes, in a unit of wt %, Si at 1.0 wt % to 5.0 wt %, C at 0.005 wt % or less (excluding 0 wt %), Mn at 0.001 wt % to 0.1 wt %, Cu at 0.001 wt % to 0.1 wt %, S at 0.001 wt % to 0.020 wt %, Se at 0.001 wt % to 0.050 wt %, Al at 0.0005 wt % to 0.010 wt %, N at 0.0005 wt % to 0.005 wt %, and the remainder of Fe and inevitable impurities.
The oriented electrical steel sheet according to the embodiment of the present invention satisfies Equation 1. 16≤(10×[Mn]+[Cu])/([S]+[Se])+(0.02−[Al])/[N]≤20   [Equation 1] (In Equation 1, [Mn], [Cu], [S], [Se], [Al], and [N] represent contents (wt %) of Mn, Cu, S, Se, Al, and N, respectively.)

公开(公告)号：US20180371576A1

公开(公告)日：2018-12-27

申请号：US16063483

申请日：2016-12-15

申请人： POSCO

发明人： Chang Soo PARK ,  Jong Ho PARK ,  Byung Deug HONG ,  Yun Su KIM

IPC分类号： C21D9/46 ,  C21D8/12 ,  C21D6/00 ,  C21D1/06 ,  C21D3/04 ,  C23C8/26 ,  C23C8/80 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

摘要： The present invention relates to an annealing separator for an oriented electrical steel sheet, an oriented electrical steel sheet, and a manufacturing method of an oriented electrical steel sheet.An annealing separator for an oriented electrical steel sheet including: a first component including a Mg oxide or a Mg hydroxide; and a second component including one kind among oxides and hydroxides of a metal selected from Al, Ti, Cu, Cr, Ni, Ca, Zn, Na, K, Mo, In, Sb, Ba, Bi, and Mn, or two or more kinds thereof, and of which Equation 1 below is satisfied, an oriented electrical steel sheet manufactured by using the same, and a manufacture method of an oriented electrical steel sheet, are provided. 0.05