专利检索 ipc:"C22C38/34" 第 1 页

1.

发明公开
ADVANCED HIGH STRENGTH ZINC PLATED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND ELECTRICAL RESISTANCE SPOT WELDABILITY AND MANUFACTURING METHOD THEREOF 审中-公开

公开(公告)号：US20240344164A1

公开(公告)日：2024-10-17

申请号：US18646241

申请日：2024-04-25

申请人： POSCO CO., LTD

发明人： Ki-Cheol Kang , Chung-Hwan Lee , Yong-Joo Kim , Kang-Min Lee , Kyoo-Young Lee

IPC分类号： C21D9/46 , B32B15/01 , B32B15/04 , B32B15/18 , C21D1/19 , C21D1/25 , C21D1/76 , C21D1/84 , C21D3/04 , C21D6/00 , C21D8/02 , C21D9/56 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , C23C28/00 , C23C28/02 , C23C30/00

CPC分类号： C21D9/46 , B32B15/01 , B32B15/013 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/19 , C21D1/25 , C21D1/76 , C21D1/84 , C21D3/04 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0257 , C21D8/0263 , C21D8/0273 , C21D8/0278 , C21D9/562 , C22C38/001 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , C23C2/02 , C23C2/022 , C23C2/0224 , C23C2/024 , C23C2/06 , C23C2/28 , C23C2/29 , C23C2/40 , C23C28/025 , C23C28/3225 , C23C28/345 , C23C30/00 , C23C30/005 , B32B2307/732 , Y10T428/12583 , Y10T428/1259 , Y10T428/12597 , Y10T428/12611 , Y10T428/12618 , Y10T428/1266 , Y10T428/12667 , Y10T428/12799 , Y10T428/12958 , Y10T428/12965 , Y10T428/12972 , Y10T428/12993 , Y10T428/24942 , Y10T428/2495 , Y10T428/24967 , Y10T428/24983 , Y10T428/26 , Y10T428/27 , Y10T428/273

摘要： The present disclosure relates to a high-strength hot-dip galvanized steel sheet having excellent surface quality and electrical resistance spot weldability, and a method for manufacturing the same. A galvanized steel sheet according to an aspect of the present disclosure is a galvanized steel sheet including a base steel sheet and a zinc-based plating layer formed on a surface of the base steel sheet, wherein a ratio (a/b) of a hardness of a surface layer portion (a) to a hardness of an internal portion (b) of the base steel sheet may be less than 0.95.

2.

发明授权
Steel material and method for producing same 有权

公开(公告)号：US12110566B2

公开(公告)日：2024-10-08

申请号：US17913106

申请日：2021-03-10

申请人： MOTP LLC

发明人： Michio Shimotomai

IPC分类号： C21D9/00 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/34 , C22C38/38

CPC分类号： C21D9/0081 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/34 , C22C38/38 , C21D2211/002 , C21D2211/004 , C21D2211/008 , C22C2202/04

摘要： To provide a steel and a manufacturing method thereof that can contribute to achieving both high strength and hydrogen embrittlement resistance. The steel has a chemical composition represented by: C: 0.15% to 0.35%; Si: 0.8% to 2.5%; Mn: 0.8% to 2.5%; Al: 0.03% to 2.0%; N: 0.002% to 0.010%; P: 0.01% or less; S: 0.01% or less; O: 0.01% or less; B: 0.0001% to 0.005%; Nb: 0.0% to 0.05%; Ti: 0.0% to 0.2%; V 0.0% to 0.05%; Mo: 0.0% to 1.0%; Cr: 0.0% to 1.0%; Ni: 0.01% to 1.0%; Cu: 0.05% to 1.0%; at least one of Ca, Mg and REM: 0.0005% to 0.01%; and the balance: Fe and impurities, and has a martensite phase or/and a bainite phase in which ε-carbide is dispersedly precipitated.

3.

发明公开
NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME 审中-公开

公开(公告)号：US20240301525A1

公开(公告)日：2024-09-12

申请号：US18662318

申请日：2024-05-13

申请人： JFE Steel Corporation

发明人： Takaaki TANAKA , Tomoyuki OKUBO

IPC分类号： C21D9/46 , C21D6/00 , C21D8/12 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/10 , C22C38/12 , C22C38/34 , C22C38/60 , H01F1/147

CPC分类号： C21D9/46 , C21D6/002 , C21D6/005 , C21D6/007 , C21D6/008 , C21D8/1222 , C21D8/1233 , C21D8/1261 , C21D8/1277 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/10 , C22C38/12 , C22C38/34 , C22C38/60 , H01F1/14791 , C22C2202/02

摘要： A non-oriented electrical steel sheet includes, by mass %, C: 0.010% or less, Si: 1.0% or more and 5.0% or less, Mn: 0.05% or more and 5.0% or less, P: 0.1% or less, S: 0.01% or less, Al: 3.0% or less, N: 0.005% or less, and the balance being Fe and inevitable impurities, wherein an average crystal grain size is 50 μm or less, and a sum SA of area ratios of crystal grains with oriented in a rolling direction or a direction perpendicular to the rolling direction and a sum SB of area ratios of crystal grains with oriented in the rolling direction or the direction perpendicular to the rolling direction satisfy SA−SB≥0.

4.

发明公开
LAMINATED CORE AND METHOD FOR THE PRODUCTION OF A LAMINATED CORE 审中-公开

公开(公告)号：US20240275217A1

公开(公告)日：2024-08-15

申请号：US18440296

申请日：2024-02-13

申请人： Vacuumschmelze GmbH & Co KG

发明人： Philipp LINK

IPC分类号： H02K1/02 , B32B7/14 , B32B15/04 , B32B15/18 , B32B37/12 , B32B37/18 , B32B38/00 , B32B38/04 , B32B38/14 , C22C19/07 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/10 , C22C38/12 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/30 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58 , H01F1/147 , H02K15/02

CPC分类号： H02K1/02 , B32B7/14 , B32B15/043 , B32B15/18 , B32B37/1292 , B32B37/18 , B32B38/0004 , B32B38/04 , B32B38/14 , C22C19/07 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/10 , C22C38/105 , C22C38/12 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/30 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58 , H01F1/147 , H02K15/02 , B32B2038/0076 , B32B2038/042 , B32B2250/05 , B32B2255/06 , B32B2255/26 , B32B2305/72 , B32B2305/74 , B32B2307/206 , B32B2307/208 , B32B2309/02 , B32B2309/105 , B32B2309/12 , B32B2310/0825 , B32B2311/22 , B32B2311/30 , B32B2457/00 , C22C2202/02

摘要： A method for the production of a laminated core is provided. A plurality of laminations are provided that are made of a soft-magnetic CoFe alloy and that have a first main surface and a second main surface that is located opposite the first main surface. An adhesive is applied to the first main surface of a first of the laminations by means of a printing process. The adhesive is then transferred to a partially cured B-stage. A second main surface of a second of the laminations is stacked on the B-stage adhesive, which is located on the first main surface of the first lamination, thereby forming a stack of loose laminations. The stack or the adhesive in the stack is cured, the adhesive thus being transferred to the fully cured C-stage in order to bond the first and second laminations to one another and so produce the laminated core.

5.

发明公开
SOFT MAGNETIC ALLOY POWDER AND PRODUCTION METHOD THEREFOR 审中-公开

公开(公告)号：US20240271259A1

公开(公告)日：2024-08-15

申请号：US18568922

申请日：2022-10-24

申请人： MITSUBISHI STEEL MFG. CO., LTD.

发明人： Tetsuji SHISEKI , Michitaka AIHARA , Keita KUME , Seiichi SAITO

IPC分类号： C22C38/34 , B22F9/08

CPC分类号： C22C38/34 , B22F9/082 , B22F2009/0848 , B22F2207/01

摘要： An Fe—Cr—Si-based soft magnetic alloy powder is provided in which the Cr weight ratio of Cr contained in the alloy powder gradually decreases from the surface of the alloy powder to a predetermined depth in the depth direction, the amount contained of Si is in the range of 3 to 6.5% by weight, the amount contained of Cr may be in the range of 1 to 5% by weight, at least one of Mn, P, S, and O may be further contained, the weight ratio of Cr oxide/metal Cr may gradually decrease from the surface of the alloy powder in the depth direction, and loss in the soft magnetic alloy powder used in a dust core is reduced so as to be able to cope with higher frequencies and larger currents.

6.

发明授权
High strength steel sheet having excellent ductility and workability, and method for manufacturing same 有权

公开(公告)号：US12037656B2

公开(公告)日：2024-07-16

申请号：US17297733

申请日：2019-07-15

申请人： POSCO

发明人： Jae-Hoon Lee , Sang-Ho Han

IPC分类号： C21D9/46 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/30 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/60

CPC分类号： C21D9/46 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/30 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/60 , C21D2211/001 , C21D2211/002 , C21D2211/008

摘要： Provided is a steel sheet that can be used for automobile parts or the like, and relates to a steel sheet having an excellent balance of strength and ductility, and excellent workability, and a method for manufacturing same.

7.

发明公开
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MAGNETIC-DOMAIN-REFINEMENT THEREOF 审中-公开

公开(公告)号：US20240186041A1

公开(公告)日：2024-06-06

申请号：US18285178

申请日：2022-12-20

申请人： POSCO Co., Ltd

发明人： Ohyeoul Kwon , Woosin Kim , Kyuseok Han

IPC分类号： H01F1/18 , C21D1/74 , C21D6/00 , C21D8/12 , C21D9/46 , C21D10/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/34 , C22C38/60

CPC分类号： H01F1/18 , C21D1/74 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/1222 , C21D8/1233 , C21D8/1255 , C21D8/1261 , C21D8/1272 , C21D8/1283 , C21D9/46 , C21D10/005 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/34 , C22C38/60 , C21D2201/05 , C22C2202/02

摘要： According to an exemplary embodiment of the present invention, a grain oriented electrical sheet includes: a plurality of deformed parts formed on a surface of the electrical sheet along a rolling direction, in which an interval between the deformed parts is changed over an entire length of the sheet in response to an index Ks of sensitivity calculated by Equation 1 below, and at least two areas having a different interval between the deformed parts exist.

Ks=(0.7×Ds+0.3×B8)/10 [Equation 1]

(in Equation 1, Ks denotes an index of sensitivity, Ds denotes a particle size of grain (mm), and B8 denotes a magnetic flux density T measured at magnetic field strength of 800 A/m.)

8.

发明公开
SOFT MAGNETIC POWDER, METAL POWDER, DUST CORE, MAGNETIC ELEMENT, AND ELECTRONIC DEVICE 审中-公开

公开(公告)号：US20240186038A1

公开(公告)日：2024-06-06

申请号：US18491915

申请日：2023-10-23

申请人： SEIKO EPSON CORPORATION

发明人： Mayu WATANABE

IPC分类号： H01F1/147 , B22F1/142 , B22F3/02 , B22F3/24 , B22F5/10 , B22F9/08 , C22C38/02 , C22C38/20 , C22C38/26 , C22C38/32 , C22C38/34

CPC分类号： H01F1/14775 , B22F1/142 , B22F3/02 , B22F3/24 , B22F5/106 , B22F9/082 , C22C38/02 , C22C38/20 , C22C38/26 , C22C38/32 , C22C38/34 , H01F27/255

摘要： A soft magnetic powder contains a composition represented by a composition formula FexCuaNbb(Si1-y(B1-zCrz)y)100-x-a-b in terms of atomic ratio [in which a, b, x, y, and z satisfy 0.3≤a≤2.0, 2.0≤b≤4.0, 75.5≤x≤79.5, 0.55≤y≤0.91, and 0.015≤z≤0.185], and impurities. A crystallite diameter measured by X-ray diffractometry is 6.0 nm or more and 13.0 nm or less.