公开(公告)号：US11566309B2

公开(公告)日：2023-01-31

申请号：US14897560

申请日：2014-06-12

申请人： OUTOKUMPU OYJ

发明人： James Oliver ,  Erik Schedin ,  Rachel Pettersson

IPC分类号： C22C38/58 ,  C22C38/42 ,  C22C38/00 ,  C22C38/02 ,  C22C38/54 ,  C21D6/00 ,  C22C38/40 ,  C22C38/44 ,  C21D9/00

摘要： Disclosed is a duplex ferritic austenitic stainless steel of 40-60 volume % ferrite and 40-60 volume % austenite, with improved cold workability and impact toughness. It contains less than 0.07% carbon (C), 0.1-2.0% silicon (Si), 3-5% manganese (Mn), 19-23% chromium (Cr), 1.1-1.9% nickel (Ni), 1.1-3.5% copper (Cu), 0.18-0.30% nitrogen (N), optionally molybdenum (Mo) and/or tungsten (W) according to the formula (Mo+½W) 10, where Creq=Cr+1.5Si+Mo+2Ti+0.5Nb Nieq=Ni+0.5Mn+30(C+N)+0.5(Cu+Co).

公开(公告)号：US11560614B2

公开(公告)日：2023-01-24

申请号：US17041830

申请日：2019-03-29

申请人： JFE Steel Corporation

发明人： Hiromi Yoshitomi ,  Masaki Koba ,  Tatsuya Nakagaito ,  Yoshitsugu Suzuki

IPC分类号： C22C38/54 ,  C21D9/46 ,  C21D8/02 ,  C23C2/06 ,  C23C2/26 ,  C22C38/50 ,  C22C38/44 ,  C22C38/46 ,  C22C38/42 ,  C22C38/00

摘要： A high-strength galvanized steel sheet includes a steel sheet having a chemical composition containing a predetermined component element, a mass ratio of a content of Si to a content of Mn in the steel (Si/Mn) being 0.1 or more and less than 0.2, and the balance: Fe and incidental impurities, and a steel structure in which an average grain size of inclusions containing at least one of Al, Si, Mg, and Ca and existing in an area extending from a surface to a position of ⅓ of a sheet thickness is 50 μm or less, and an average nearest distance between ones of the inclusions is 20 μm or more; and a galvanized layer provided on a surface of the steel sheet, in which an amount of diffusible hydrogen contained in the steel is less than 0.25 mass ppm, and a tensile strength is 1100 MPa or more.

公开(公告)号：US20230012944A1

公开(公告)日：2023-01-19

申请号：US17757491

申请日：2020-03-31

申请人： Longnan Longyi Heavy Rare-Earth Technology Co., Ltd.

发明人： Fusheng Zhu ,  Zhigang Wang ,  Qing Yang ,  Zhijin Liao ,  Yupeng Yang ,  Chunhong Li

IPC分类号： C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21B13/12 ,  B22D7/00 ,  C21D6/00

摘要： The present invention discloses to a Hot-work die steel electroslag remelted ingot and a manufacture method thereof. The electroslag remelted ingot comprises the following chemical components, C: 0.36-0.41%, Si: 0.80-1.10%, Mn: 1.00-3.00%, Cr: 4.90-5.40%, Mo: 1.35-1.55%, V: 0.4-0.7%, Ni≤0.04%, Cu≤0.04%%, S≤0.003%, P≤0.012%, O≤0.0015%, H≤0.0002%, N≤0.006%, 0.05%≤RE≤0.20%, the balance being Fe. The above percentage is percentage by mass. According to the present invention, the features of electroslag remelting under inert gas protection are fully combined and a rare earth alloy is precisely fed during the electroslag remelting, thus exerting the excellent effects of RE inclusion modification and micro-alloying under high purity and high uniformity conditions and realizing high-quality and high-performance Hot-work die steel.

公开(公告)号：US20230012836A1

公开(公告)日：2023-01-19

申请号：US17943470

申请日：2022-09-13

申请人： AKTIEBOLAGET SKF

发明人： Juergen Gegner

IPC分类号： F16C33/62 ,  C23C30/00 ,  C22C38/02 ,  C22C38/04 ,  C23C4/18 ,  C22C38/18 ,  C22C38/00 ,  C23C4/067 ,  C23C4/131 ,  C23C24/10 ,  C23C4/123 ,  C22C38/22 ,  C22C38/26 ,  C22C38/44 ,  C22C38/20 ,  C22C38/42 ,  C22C38/24 ,  C22C38/06 ,  C22C38/46 ,  C22C38/30 ,  C22C38/32 ,  C22C38/52 ,  C22C38/54 ,  C22C38/28 ,  C22C38/50 ,  C22C38/48 ,  F16C33/58 ,  C22C38/60 ,  C22C38/10 ,  C22C38/12 ,  C22C38/16 ,  C22C38/14 ,  C22C38/40

摘要： A bearing component such as a bearing ring includes a metallic base body and at least one alloy steel coating on the base body, the coating being applied to the base body by deposition welding. The base body is preferably non-alloy steel or cast iron, and the alloy includes at least one carbide-forming transition metal such as niobium, tantalum, zirconium, titanium, hafnium, tungsten, molybdenum, vanadium, or manganese. The coating can form a raceway of the bearing component or a structural element such as a flange. Also a method of forming such a bearing component is provided.

公开(公告)号：US11551838B2

公开(公告)日：2023-01-10

申请号：US16961286

申请日：2019-02-08

申请人： NIPPON STEEL CORPORATION

发明人： Satoshi Arai ,  Hideyuki Hamamura ,  Shunsuke Okumura ,  Kimihiko Sugiyama

IPC分类号： H01F1/147 ,  B23K26/364 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/60 ,  C21D6/00 ,  C21D8/12 ,  C21D9/46

摘要： A grain-oriented electrical steel sheet according to the present invention has a steel sheet surface provided with grooves. An average protrusion height of the surface protrusion extending along a longitudinal direction of the groove is more than 5 μm and not more than 10 μm. When the surface protrusion is viewed in a cross section including the longitudinal direction of the groove and a normal direction of the steel sheet surface, the surface protrusion includes specific portions each having a height of 50% or more with respect to a height of each peak point appearing on a profile line of the surface protrusion. In the longitudinal direction of the groove, the total length of the specific portions is a length of 30% or more with respect to an overall length of the surface protrusion.

公开(公告)号：US20230002875A1

公开(公告)日：2023-01-05

申请号：US17810703

申请日：2022-07-05

申请人： Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing ,  Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering ,  Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences

发明人： Zhuhui Qiao ,  Yuan Yu ,  Weimin Liu ,  Huaguo Tang ,  Lujie Wang ,  Tongyang Li ,  Lin Song ,  Youjian Zhang

IPC分类号： C22C38/42 ,  C22C33/02 ,  C22C33/00

摘要： The present disclosure discloses a preparation method of a multi-functional marine engineering alloy. Through the coupling of a multi-principal alloy structure, structural entropy, and temperature and powder metallurgy and heat treatment, mutual solubility between elements and free energy of an alloy system are regulated, Cu grain boundary segregation is eliminated, and uniform and dispersed nano-precipitation of the anti-fouling element Cu in corrosion-resistant and high-plasticity multi-principal alloys is realized. The preparation method is simple and controllable to operate, and the prepared material has plasticity higher than 75%, high yield strength, excellent corrosion resistance and anti-fouling property, and has important application prospects in the field of marine engineering.

公开(公告)号：US20230002869A1

公开(公告)日：2023-01-05

申请号：US17784416

申请日：2020-12-16

申请人： POSCO

发明人： Jai-Ik Kim ,  Jea-Chun Jeon

IPC分类号： C22C38/04 ,  C22C38/54 ,  C22C38/50 ,  C22C38/42 ,  C22C38/06 ,  C22C38/00 ,  C21D8/02 ,  C21D9/00

摘要： The present invention provides a tin blackplate for processing and a method for manufacturing the same.
The tin blackplate according to an exemplary embodiment of the present invention comprises: in % by weight, 0.0005 to 0.005% of carbon (C), 0.15 to 0.60% of manganese (Mn), 0.01 to 0.06% of aluminum (AI), 0.0005 to 0.004% of nitrogen (N), 0.0005 to 0.003% of boron (B), 0.01 to 0.035% of titanium (Ti), and the balance being iron (Fe) and inevitable impurities, and satisfies the following Formula 1. 4.8≤([Ti]+[Al])/[N]−[B]≤12.5  [Equation 1] In this case, in Equation 1, [Ti], [Al], [N], and [B] mean each value obtained by dividing the content (% by weight) of Ti, Al, N, and B in the blackplate by each atomic weight thereof.

公开(公告)号：US11542567B2

公开(公告)日：2023-01-03

申请号：US16934168

申请日：2020-07-21

申请人： NUCOR CORPORATION

发明人： Tao Wang ,  Kishlay Mishra ,  Jeffery Edward Keffer

IPC分类号： C21D8/02 ,  C21D9/46 ,  B21B27/10 ,  B21B45/00 ,  B21B45/02 ,  B21B3/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/12 ,  C22C38/60 ,  C22C38/42

摘要： Described herein are thin metal strips having hot rolled exterior side surfaces characterized as being primarily or substantially free of all prior austenite grain boundaries, or at least primarily or substantially free of all prior austenite grain boundaries, and including elongated surface structure. As a result, because the prior austenite grain boundaries are not primarily or substantially present, all such prior austenite grain boundaries are not susceptible to grain boundary etching due to acid etching or pickling. In particular examples, the thin metal strips undergo hot rolling performed with a coefficient of friction equal to or greater than 0.20 with or without use of lubrication.

公开(公告)号：US11530474B2

公开(公告)日：2022-12-20

申请号：US16634346

申请日：2019-02-15

申请人： NIPPON STEEL CORPORATION

发明人： Soshi Fujita ,  Yuki Suzuki ,  Masahiro Fuda ,  Jun Maki ,  Hideaki Irikawa ,  Tatsuya Kubota

IPC分类号： C23C2/12 ,  B32B15/10 ,  B21D22/02 ,  C21D8/02 ,  C22C21/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/42 ,  C22C38/60 ,  C23C2/28 ,  C23C2/40 ,  C23C28/02

摘要： Fe-Al-based plated hot-stamped member exhibiting excellent formed part corrosion resistance and post-coating corrosion resistance and manufacturing method. The hot-stamping member includes Fe-Al-based plated layer on one or both surfaces of a base material, the base material has a predetermined steel component, Fe-Al-based plated layer has a thickness of 10 μm or more and 60 μm or less, formed by A, B, C and D layers sequentially from a surface toward the base material, and each of the four layers is a Fe-Al-based intermetallic compound containing Al, Fe, Si, Mn and Cr for predetermined contents with the balance made up of impurities, the D layer further contains Kirkendall voids each of which cross-sectional area is 3 μm2-30 μm2 for 10 pieces/6000 μm2 or more and 40 pieces/6000 μm2 or less.

公开(公告)号：US20220388120A1

公开(公告)日：2022-12-08

申请号：US17776262

申请日：2020-11-19

申请人： VULKAN INOX GMBH

发明人： Marc HIDDE ,  André HAHN

IPC分类号： B24C11/00 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/52 ,  C22C38/42 ,  C22C38/06 ,  C22C38/58 ,  C22C38/02 ,  C22C38/00

摘要： A stainless blasting medium is provided including blasting medium elements containing an austenitic chromium-manganese steel, the blasting medium comprising the austenitic chromium-manganese steel-containing blasting medium elements in a range of ≥90 wt.-% to ≤100 wt.-% relative to the total weight of the stainless blasting medium. The following further relates to the use of the stainless blasting medium for blasting surfaces, metal and non-metal surfaces, such as workpieces, in particular stainless workpieces.