公开(公告)号：US2026390A

公开(公告)日：1935-12-31

申请号：US74043334

申请日：1934-08-18

Applicant: HEIHACHI KAMURA

Inventor： HEIHACHI KAMURA

IPC: C22C33/04

CPC classification number: C22C33/04

公开(公告)号：US1941556A

公开(公告)日：1934-01-02

申请号：US49419230

申请日：1930-11-07

Applicant: LEBANON STEEL FOUNDRY

Inventor： JONES ABNER C

IPC: C22C33/04 ,  C22C38/04

CPC classification number: C22C33/04 ,  C22C38/04

公开(公告)号：US1867804A

公开(公告)日：1932-07-19

申请号：US43014030

申请日：1930-02-20

Applicant: BROWNE VERE B

Inventor： BROWNE VERE B

IPC: C22C33/04

CPC classification number: C22C33/04

公开(公告)号：US1574550A

公开(公告)日：1926-02-23

申请号：US2025225

申请日：1925-04-02

Applicant: BROWNE VERE B

Inventor： BROWNE VERE B

IPC: C22C33/04

CPC classification number: C22C33/04

公开(公告)号：US12227817B2

公开(公告)日：2025-02-18

申请号：US18036253

申请日：2022-01-19

Applicant: NIPPON STEEL CORPORATION

Inventor： Shinichiro Tabata ,  Kazuhisa Kusumi ,  Yuki Suzuki

IPC: B32B15/01 ,  C21D1/18 ,  C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C22C33/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/60 ,  C23C2/06 ,  C23C2/12 ,  C23C2/40

Abstract: This steel has a steel sheet substrate and a protective film formed on at least a part of a surface of the steel sheet substrate, the chemical composition of the steel sheet substrate is, by mass %, C: 0.25% to 0.65%, Si: 0.05% to 2.00%, Mn: 0.30% to 3.00%, P: 0.050% or less, S: 0.0100% or less, N: 0.010% or less, O: 0.010% or less, Cr: 0.05% to 1.00%, and Cu: 0.10% to 1.00%, in an X-ray analysis in which measurement is carried out using a CuKα radiation, in a case where a peak intensity at a diffraction angle (2θ) position of 36.6±0.5° is regarded as 100%, the protective film has a peak having a peak intensity of more than 250% at a diffraction angle (2θ) position of 35.5±0.5° and a tensile strength is more than 1,500 MPa.

公开(公告)号：US20250043378A1

公开(公告)日：2025-02-06

申请号：US18434830

申请日：2024-02-07

Applicant: WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  WUKE XINCAI (WUHAN) TECHNOLOGY CO., LTD. ,  WUKE COMPOSITE MATERIALS (HAIKOU) TECHNOLOGY CO., LTD. ,  SINO-ENERGY HUAYUAN FLOATING WIND INSTITUTE

Inventor： Kaiming WU ,  Shi CHENG ,  Shaoguan XIANG

IPC: C21D9/46 ,  C21C7/06 ,  C21C7/10 ,  C21D1/18 ,  C21D6/00 ,  C21D8/02 ,  C22C33/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14

Abstract: A high-strength steel with excellent neutral aqueous medium corrosion resistance, and a preparation method and application thereof are provided. A steel plate is designed with cheap chemical compositions of low carbon, low silicon and medium manganese, and is completely free of precious metal elements such as Cr, Ni and Cu, thereby greatly reducing the material cost. According to the present invention, instead of the traditional Al deoxidation technology, Si or Si—Mn deoxidation assisted by Zr—Ti composite deoxidation is used to form a fine, dispersed and uniform composite oxysulfide, which greatly decreases the density of corrosion-active inclusions, and obviously improves the neutral aqueous medium corrosion resistance. Through the design of low carbon equivalent, the steel plate has excellent welding performance; and the composite microalloying of Nb, Zr and Ti is adopted to cooperate with the TMCP rolling parameter control, so that the steel plate has high strength and good extensibility.

公开(公告)号：US20250043371A1

公开(公告)日：2025-02-06

申请号：US18436044

申请日：2024-02-08

Applicant: WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  WUKE XINCAI (WUHAN) TECHNOLOGY CO., LTD ,  WUKE COMPOSITE MATERIALS (HAIKOU) TECHNOLOGY CO., LTD. ,  SINO-ENERGY HUAYUAN FLOATING WIND INSTITUTE

Inventor： Kaiming WU ,  Shaoguan XIANG

IPC: C21C7/00 ,  C21C7/06 ,  C22C33/04 ,  C22C38/00 ,  C22C38/14

Abstract: A composite additive for forming inclusions with a core-shell structure, a preparation method and a smelting method are provided. The composite additive includes the following chemical components by mass percentage: Fe: 41-59%, Zr: 5-11%, Ti: 14-26%, Mg: 11-19%, and RE: 4-10%, in which the mass percentage content of Zr element, Ti element, Mg element and RE element satisfies a formula: (Ti+Mg+RE)/Zr=4-8. The composite additive for forming inclusions with a core-shell structure has the characteristics of fineness, spheroidization and obvious dispersion effect. This type of inclusions has a bulk modulus similar to that of the iron matrix, which can significantly improve the plasticity, toughness, fatigue resistance, local corrosion resistance, welding performance, cold bending performance, etc. of steel materials, suitable for steel types with strict requirements on the shape of inclusions, such as marine steel, pipeline steel, container steel, cold heading steel, tool and die steel, etc.

公开(公告)号：US20240417830A1

公开(公告)日：2024-12-19

申请号：US18703948

申请日：2022-01-27

Applicant: INSTITUTE OF RESEARCH OF IRON AND STEEL, JIANGSU PROVINCE/SHA-STEEL, CO. LTD (CN) ,  Jiangsu Shagang Group Co., Ltd. ,  ZHANGJIAGANG YANGTZE RIVER COLD ROLLED PLATE CO., LTD

Inventor： Chongxiang YUE ,  Hongwei QIAN ,  Shengjie WU ,  Dongfang ZHAN

IPC: C22C38/02 ,  C21D1/26 ,  C21D6/00 ,  C21D8/10 ,  C21D8/12 ,  C21D9/46 ,  C22C33/04 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06

Abstract: A non-oriented silicon steel for driving motors of new energy vehicles and a production method thereof. The silicon steel is produced sequentially by steel smelting, continuous casting, hot rolling, normalizing, acid washing, single stand cold rolling without pre-heating, annealing, cooling, coating, and finishing. During steel smelting, no Cu, Cr, Ni, Nb, V, and Ti are added. The silicon steel comprises the following chemical ingredients: Si: 2.95%-3.15%, Al: 0.75%-0.95%, Si+2Al: 4.6%-4.9%, Mn: 0.5%-0.7%, Sn: 0.03%-0.04%, C≤0.0025%, with the balance being iron, wherein Mn/S≥380, and Al/N≥200. In the present application, the strength is improved while the magnetic performance is ensured, to solve the problem in the prior art that the magnetic performance and strength cannot be pursued at the same time, thus meeting the requirements for use in driving motors of new energy vehicles.

公开(公告)号：US12087481B2

公开(公告)日：2024-09-10

申请号：US18091899

申请日：2022-12-30

Applicant: Baotou Jinshan Magnetic Material Co., Ltd.

Inventor： Feng Xia ,  Yulong Fu ,  Chen Chen ,  Hailong Zheng ,  Zichao Wang ,  Yonghong Liu ,  Caina Sun ,  Yu Wang

IPC: B22F9/02 ,  B22F1/05 ,  B22F3/16 ,  C22C33/04 ,  C22C38/00 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  H01F1/057 ,  H01F41/02 ,  B22F9/04

CPC classification number: H01F1/057 ,  B22F1/05 ,  B22F3/16 ,  B22F9/023 ,  C22C33/04 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  H01F41/0253 ,  B22F2009/044 ,  B22F2201/20 ,  B22F2202/05 ,  B22F2301/355 ,  B22F2304/10 ,  B22F2998/10 ,  C22C2202/02

Abstract: Provided are an auxiliary alloy casting piece, a high-remanence and high-coercive force NdFeB permanent magnet, and preparation methods thereof. The method for preparing the auxiliary alloy casting piece includes the following steps: providing an auxiliary alloy material including, by mass percentage, 40% to 45% of Pr, 1% to 2% of Co, 0.5% to 1% of Ga, 0.6% to 0.8% of B, 0.1% to 0.2% of V, 0.3% to 0.7% of Ti, and a balance of Fe; smelting the auxiliary alloy material to obtain a smelted material; and subjecting the smelted material to a quick-setting casting to obtain the auxiliary alloy casting piece; where the quick-setting casting includes a refining and a casting in sequence.

公开(公告)号：US20240133490A1

公开(公告)日：2024-04-25

申请号：US18547172

申请日：2022-02-25

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Wen SUN ,  Yaoheng LIU ,  Zhonghua ZHANG ,  Ping HU ,  Yannan MA

IPC: F16L9/02 ,  C21D1/84 ,  C21D6/00 ,  C21D8/10 ,  C21D9/08 ,  C22C33/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

CPC classification number: F16L9/02 ,  C21D1/84 ,  C21D6/005 ,  C21D6/008 ,  C21D8/105 ,  C21D9/085 ,  C22C33/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C21D2211/002

Abstract: The present disclosure provides a bainite geological drilling pipe, comprising the following chemical elements in percentage by mass: 0.14-0.22% of C, 0.2-0.55% of Si, 2.1-2.9% of Mn, 0.01-0.04% of Nb, 0.015-0.04% of Al, 0.001-0.005% of B, 0