专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20230126782A1 WELD STRUCTURE, STAINLESS STEEL WELDED STRUCTURE, STAINLESS STEEL WELDED CONTAINER AND STAINLESS STEEL 有权
公开(公告)号：US20230126782A1
公开(公告)日：2023-04-27
申请号：US17907885
申请日：2021-03-19
申请人： NIPPON STEEL Stainless Steel Corporation
发明人： Tooru MATSUHASHI , Naohito KUMANO
IPC分类号： B23K35/30 , C22C38/58 , C22C38/54 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/34 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00
摘要： A weld structure includes a first stainless steel member and a second stainless steel member. A crevice made by welding is defined by welding an end of the first stainless steel member and a portion other than an end of the second stainless steel member. A portion close to the end of the first stainless steel member is formed as a weld metal portion by performing welding heat input on the portion close to the end of the first stainless steel member. In the crevice made by welding, a length LB from a boundary between the weld metal portion and a raw material portion to a crevice deepest portion and a crevice length LC from the crevice deepest portion to a 40 μm-width position satisfy LC

2. 发明授权

US11634801B2 Ferritic stainless steel having reduced carbon sludge adsorption for exhaust system heat exchanger and method of manufacturing same 有权
公开(公告)号：US11634801B2
公开(公告)日：2023-04-25
申请号：US16337629
申请日：2016-11-22
申请人： POSCO
发明人： Il Chan Jung , Jong Chul Kim , Jae Hong Shim , Deok Chan Ahn , Jin Suk Kim
IPC分类号： C22C38/04 , C22C38/34 , C21D6/00 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/26 , C22C38/28 , F28F21/08
摘要： Provided is a ferritic stainless steel for an exhaust system heat exchanger and a method of manufacturing the same. The ferritic stainless steel includes, in percent (%) by weight of the entire composition, 0.003 to 0.1% of carbon (C), 0.01 to 2.0% of silicon (Si), 0.01 to 1.5% of manganese (Mn), 0.05% or less of phosphorus (P), 0.005% or less of sulfur (S), 10 to 30% of chromium (Cr), 0.001 to 0.10% of titanium (Ti), 0.001 to 0.15% of aluminum (Al), 0.003 to 0.03% of nitrogen (N), 0.3 to 0.6% of niobium (Nb), 0.01 to 2.5% of molybdenum (Mo), and the remainder of iron (Fe) and other inevitable impurities, wherein TiN precipitates having a size of 0.1 μm or more are distributed in a surface layer of a ferrite matrix at a concentration of 2.5*104 ea/mm2 or less.

3. 发明申请

US20230085558A1 ROD-SHAPED ELECTROMAGNETIC STAINLESS STEEL MATERIAL 有权
公开(公告)号：US20230085558A1
公开(公告)日：2023-03-16
申请号：US17800846
申请日：2021-02-12
申请人： NIPPON STEEL Stainless Steel Corporation
发明人： Shota YAMASAKI , Kohji TAKANO
IPC分类号： C22C38/58 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/00 , C22C38/34 , C22C38/54 , C22C38/46 , H01F1/147
摘要： A bar-shaped stainless steel product contains, by mass %, 0.001 to 0.030% of C, 0.01 to 4.00% of Si, 0.01 to 2.00% of Mn, 0.01 to 4.00% of Ni, 6.0 to 35.0% of Cr, 0.01 to 5.00% of Mo, 0.01 to 2.00% of Cu, and 0.001 to 0.050% of N. In the product, an F value is 20 or less, a rolling-direction-crystal-orientation RD// fraction is 0.05 or more, and preferably a rolling-direction-crystal-orientation RD// fraction is 0.2 or less. The above RD// fraction means an area ratio of crystal having 25 degrees or less of an orientation difference between a orientation and a rolling direction, and the above RD// fraction means an area ratio of crystal having 10 degrees or less of an orientation difference between a orientation and a rolling direction. F value=700C+800N+20Ni+10Cu+10Mn−6.2Cr−9.2Si−9.3Mo−74.4Ti−37.2A1−3.1Nb+63.2

4. 发明申请

US20230029040A1 HIGH STRENGTH STEEL SHEET HAVING SUPERIOR WORKABILITY AND METHOD FOR MANUFACTURING SAME 有权
公开(公告)号：US20230029040A1
公开(公告)日：2023-01-26
申请号：US17786426
申请日：2020-11-24
申请人： POSCO
发明人： Jae-Hoon LEE , Tae-Kyo HAN , Sang-Hwan LEE
IPC分类号： C21D9/46 , C22C38/38 , C22C38/34 , C22C38/16 , C22C38/14 , C22C38/22 , C22C38/10 , C22C38/08 , C22C38/06 , C22C38/00 , C21D8/02 , C21D6/00
摘要： Provided is a steel sheet which can be used for automobile parts and the like, and relates to a steel sheet having a superior balance of strength and ductility and strength and hole expansion ratio and superior bending formability, and a method for manufacturing same.

5. 发明授权

US11519061B2 Steel sheet 有权
公开(公告)号：US11519061B2
公开(公告)日：2022-12-06
申请号：US15751113
申请日：2015-08-31
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Riki Okamoto , Hiroyuki Kawata , Masafumi Azuma , Akihiro Uenishi , Naoki Maruyama
IPC分类号： C22C38/58 , C22C38/12 , C21D8/12 , C22C38/08 , C22C38/04 , C22C38/14 , C22C38/16 , C22C38/02 , C22C38/06 , C22C38/34 , C22C38/42 , C22C38/44 , C21D9/46 , C22C38/00 , C23C2/28 , C21D8/00 , C23C2/06 , C25D7/06 , C25D5/36 , C25D5/48 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54
摘要： A steel sheet includes: a predetermined chemical composition; and a steel structure represented by, in area %, first martensite in which two or more iron carbides each having a circle-equivalent diameter of 2 nm to 500 nm are contained in each lath: 20% to 95%, ferrite: 15% or less, retained austenite: 15% or less, and the balance: bainite, or second martensite in which less than two iron carbides each having a circle-equivalent diameter of 2 nm to 500 nm are contained in each lath, or the both of these, in which the total area fraction of ND// orientation grains and ND// orientation grains is 40% or less, and the content of solid-solution C is 0.44 ppm or more.

6. 发明授权

US11519047B2 Motor vehicle component and a method of manufacturing thereof 有权
公开(公告)号：US11519047B2
公开(公告)日：2022-12-06
申请号：US15592545
申请日：2017-05-11
申请人： Benteler Automobiltechnik GmbH
发明人： Martin Holzweissig , Georg Frost , Ruediger Erhardt
IPC分类号： C21D9/00 , C21D1/06 , C21D8/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/34
摘要： A motor vehicle component and a method of manufacturing thereof is disclosed having at least regionally high-strength and at the same time ductile properties, including providing a sheet metal blank composed of a hardenable steel alloy with at least 0.25% carbon fraction, at least partially heating the sheet metal blank to above austenitizing temperature, in less than 20 seconds, hot-forming and press-hardening the sheet metal blank, in the process, setting a tensile strength Rm of greater than 1800 MPa and an elongation at break A20 of greater than 6%.

7. 发明申请

US20220359108A1 NON-ORIENTED ELECTRICAL STEEL SHEET, METHOD FOR PRODUCING THE SAME, AND MOTOR CORE 有权
公开(公告)号：US20220359108A1
公开(公告)日：2022-11-10
申请号：US17619838
申请日：2020-07-07
申请人： JFE Steel Corporation
发明人： Takaaki Tanaka , Tomoyuki Okubo , Yoshiaki Zaizen , Yoshihiko Oda , Yukino Miyamoto
IPC分类号： H01F1/147 , C22C38/18 , C22C38/16 , C22C38/14 , C22C38/12 , C22C38/08 , C22C38/06 , C22C38/04 , C22C38/34 , C22C38/00 , C21D9/46 , C21D8/02 , C21D6/00 , H02K1/02
摘要： Provided is a non-oriented electrical steel sheet having an average crystal grain size of crystal grains being not more than 80 μm, an area ratio of crystal grains having a grain size of not less than 1.5 times the average crystal grain size being not less than 10%; and an area ratio of crystal grains having aspect ratios of not more than 0.3 being not more than 20%, by subjecting a steel raw material containing, in mass %, C: not more than 0.005%, Si: 2.0 to 5.0%, Mn: 0.05 to 5.0%, Al: not more than 3.0%, and Zn: 0.0003 to 0.0050% to hot rolling, cold rolling, and cold-rolled sheet annealing and by heating the cold-rolled sheet to an annealing temperature between 700 to 850° C. at the average heating rate between 500 and 700° C. in a heating process of the cold-rolled sheet annealing to be not less than 10° C./s.

8. 发明授权

US11492678B2 Non-oriented electrical steel sheet and method for preparing same 有权
公开(公告)号：US11492678B2
公开(公告)日：2022-11-08
申请号：US16957977
申请日：2018-05-17
申请人： POSCO
发明人： Jae-Hoon Kim , Yong-Soo Kim , Jung-Woo Kim , Su-Yong Shin
IPC分类号： C21D9/46 , C21D6/00 , C21D8/02 , C21D8/12 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/34
摘要： A non-oriented electrical steel sheet according to an exemplary embodiment of the present invention includes, by weight %, Si: 2.5 to 6.0%, Al: 0.2 to 3.5%, Mn: 0.2 to 4.5%, Cr: 0.01 to 0.2%, P: 0.005 to 0.08%, Mg: 0.0005 to 0.05%, and a remainder including Fe and inevitable impurities, while satisfying Equation 1 below, and formed with an inner oxidation layer of a 0.2 to 5 μm thickness inside a base steel sheet. −2.5≤[P]/[Cr]−[Mg]×100≤6.5 [Equation 1] (In Equation 1, [P], [Cr], and [Mg] respectively represent a content (by wt %) of P, Cr, and Mg).

9. 发明授权

US11491588B2 Brazing material 有权
公开(公告)号：US11491588B2
公开(公告)日：2022-11-08
申请号：US16470118
申请日：2017-12-11
申请人： SWEP INTERNATIONAL AB
发明人： Tomas Dahlberg , Niclas Bornegård
IPC分类号： B23K35/30 , B23K35/02 , C22C38/58 , C22C38/54 , C22C38/44 , C22C38/34 , B23K101/14
摘要： A brazing material for brazing a brazed plate heat exchanger comprising a number of heat exchanger plates being provided with a pressed pattern of ridges and grooves adapted to provide contact points between neighbouring heat exchanger plates, such that the heat exchanger plates are kept on a distance from one another and such that interplate flow channels for media to exchange heat are formed between the heat exchanger plates comprises a brazing alloy comprising at least one melting point depressing element and metals resembling the composition of the heat exchanger plates. The brazing material comprises a mixture between grains of a melting brazing material having solidus and liquidus temperatures lower than a brazing temperature and a non-melting brazing material having solidus and liquidus temperatures above the brazing temperature. The ratio between the melting and non-melting brazing materials is such that an alloy formed by the melting and non-melting brazing materials has a solidus temperature lower than the brazing temperature and a liquidus temperature higher than the brazing temperature.

10. 发明申请

US20220344084A1 GRAIN ORIENTED ELECTRICAL STEEL SHEET 有权
公开(公告)号：US20220344084A1
公开(公告)日：2022-10-27
申请号：US17761092
申请日：2020-09-16
申请人： NIPPON STEEL CORPORATION
发明人： Takashi KATAOKA , Ichiro TANAKA , Haruhiko ATSUMI , Kazutoshi TAKEDA , Ryutaro YAMAGATA , Nobusato MORISHIGE
IPC分类号： H01F1/147 , C22C38/28 , C22C38/20 , C22C38/06 , C22C38/04 , C22C38/34 , C22C38/00 , C21D9/46 , C21D8/12 , C21D8/00 , C21D6/00 , C21D3/04
摘要： A grain oriented electrical steel sheet includes a base steel sheet, a glass film, and a tension-insulation coating. When a glow discharge emission spectroscopy is conducted from a surface of the glass film toward a depth direction, an analysis starting time Ts, a time TAlp at which Al shows a maximum emission intensity, an Al emission intensity F(TAlp) at the TAlp, a time TSip at which Si shows a maximum emission intensity, and an Al emission intensity F(TSip) at the TSip satisfy 0.05≤F(TSip)/F(TAlp)≤0.50 and 2.0≤(TAlp−Ts)/(TSip−Ts)≤5.0.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式