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公开(公告)号：US12129525B2
公开(公告)日：2024-10-29
申请号：US17568835
申请日：2022-01-05
IPC分类号： G01N33/48 , C21D6/00 , C21D6/02 , C21D7/13 , C22C33/00 , C22C38/06 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/54 , G01N33/50 , G16C60/00 , G06F30/27 , G06F113/26
CPC分类号： C21D6/02 , C21D6/004 , C21D7/13 , C22C33/00 , C22C38/06 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/54 , G16C60/00 , C21D2211/001 , C21D2211/004 , G06F30/27 , G06F2113/26
摘要： An optimized Gamma-prime (γ′) strengthened austenitic transformation induced plasticity (TRIP) steel comprises a composition designed and processed such that the optimized γ′ strengthened austenitic TRIP steel meets property objectives comprising a yield strength of 896 MPa (130 ksi), and an austenite stability designed to have Msσ(sh)=−40° C., wherein Msσ(sh) is a temperature for shear, and wherein the property objectives are design specifications of the optimized γ′ strengthened austenitic TRIP steel. The optimized γ′ strengthened austenitic TRIP steel is Blastalloy TRIP 130.
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公开(公告)号：US12121950B2
公开(公告)日：2024-10-22
申请号：US17594664
申请日：2020-05-06
发明人： Cangji Shi , Eric Denijs , Pascal Charest
CPC分类号： B21D22/022 , C21D1/25 , C21D1/42 , C21D1/673 , C21D7/13 , C21D8/0421 , C21D8/0447 , C21D9/48 , C21D11/00
摘要： A system for producing components by hot forming includes a conductive post-furnace heat station, a furnace, a computer system, and a press. The computer system comprises one or more physical processors operatively connected with the furnace in and the conductive post-furnace heat station. The one or more physical processors being programmed with computer program instructions which, when executed cause the computer system to control the furnace to heat the blank to a temperature that is below AC3 temperature; and control the conductive post-furnace heat station to heat a portion of the heated blank to a temperature above the AC3 temperature by thermal conduction. The press is constructed and arranged to receive the post-heated blank from the post-furnace heat station and to form the post-heated blank into the shape of the component.
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公开(公告)号：US12104231B2
公开(公告)日：2024-10-01
申请号：US17751230
申请日：2022-05-23
发明人： Masamichi Kawano
IPC分类号： C22C38/24 , C21D6/00 , C21D7/13 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22
CPC分类号： C22C38/24 , C21D6/002 , C21D7/13 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22
摘要： The present invention relates to a steel material including, in mass %: 0.310≤C≤0.410; 0.001≤Si≤0.35; 0.45≤V≤0.70; Cr≤6.00; 6.25≤Mn+Cr; Mn/Cr≤0.155; Cu+Ni≤0.84; 0.002≤P≤0.030; 0.0003≤S≤0.0060; P+5S≤0.040; 2.03
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公开(公告)号：US12064814B2
公开(公告)日：2024-08-20
申请号：US17266371
申请日：2019-07-09
发明人： Kenjiro Sugio , Takuya Takahashi , Hitoshi Sawada , Gen Sasaki , Kazuhiro Matsugi , Yongbum Choi , Zhefeng Xu , Hajime Suetsugu , Hiroki Kondo , Hideki Manabe , Kyotaro Yamane , Kenichi Hatakeyama , Keizo Kawasaki , Tsuyoshi Itaoka , Shinsaku Seno , Yasushi Tamura , Ichirou Ino , Yoshihide Hirao
摘要： Provided is a method of producing a composite having high strength and high thermal conductivity. The method includes: an alloy preparation step including preparing an alloy which is a solid solution containing α-Fe as a solvent and at least one type of α-phase stabilizing element as a solute; a first mixing step including mixing at least one type of α-phase stabilizing element in powder form and SiC to prepare a first mixture; a second mixing step including mixing the alloy and the first mixture to prepare a second mixture; and a sintering step including sintering the second mixture.
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公开(公告)号：US20240254606A1
公开(公告)日：2024-08-01
申请号：US18561557
申请日：2022-05-13
发明人： Hiroto UNNO , Atsushi YASHIRO , Hiroaki OHARA , Ayaka SAWADA , Naoki FUJIMOTO , Naoya SAWAKI
CPC分类号： C22C38/52 , C21D7/02 , C21D7/13 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/50
摘要： The present invention addresses the problem of reducing the cause of etching failure or pinholes as much as possible in an extremely thin ferrous alloy foil that has a thickness of 10-30 μm and that is applied to a metal mask used for increasing the precision of an electronic component. In order to solve the abovementioned problem, the present invention provides a ferrous alloy foil that has a composition containing at most 0.150% of C, at most 2.00% of Si, at most 10.00% of Mn 2.00-50.00% of Ni, at most 19.00% of Cr, at most 0.20% of N, at most 0.030% of Al, at most 5.00% of Co, at most 0.0005% of Mg, at most 0.0005% of Ca, at most 0.01% of Ti, at most 0.035% of P, and at most 0.0300% of S, with the balance consisting of Fe and impurities. The amount of Al2O3 is at most 30 mass % and the amount of MgO is at most 15 mass % with respect to the total mass of inclusions having a particle diameter of 2.00 μm or larger, and among the inclusions having a particle diameter of 2.00 μm or larger, the number ratio of inclusions having a particle diameter of no larger than 5.00 μm is 80.00% or higher.
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公开(公告)号：US20240124962A1
公开(公告)日：2024-04-18
申请号：US18396165
申请日：2023-12-26
发明人： In Beom Lee , Min Woo Kang , Min Woo Kang , Dong Hwi Kim , Chang Won Kang , Myung Sik Kim , Sung Min Hong , Gung Seung Nam , Sang Won Lee
摘要： A steel for a gear includes, based on a total weight of the steel: C: 0.10-0.30 wt %, Si: 0.60-0.80 wt %, Mn: 0.25-0.75 wt %, Cr: 1.80-2.20 wt %, Ni: 0.50-1.50 wt %, Mo: 0.20-0.40 wt %, Nb: 0.025-0.050 wt %, V: 0.030-0.050 wt %, and a balance of Fe and inevitable impurities, wherein contents of Nb and V satisfy the following :
0.055 ,
wherein [Nb] represents a content of Nb and [V] represents a content of V.-
公开(公告)号：US11814709B2
公开(公告)日：2023-11-14
申请号：US17286876
申请日：2019-10-28
发明人： Masayuki Kasai , Naoya Ihara , Kimihiro Nishimura
IPC分类号： C22C38/60 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/42 , C22C38/54 , C22C38/00 , C22C38/06 , C22C38/52 , C23C12/00 , C21D9/00 , C21D8/00 , C21D7/13
CPC分类号： C22C38/60 , C21D7/13 , C21D8/005 , C21D9/00 , C22C38/001 , C22C38/002 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C23C12/00 , C21D2211/002
摘要： Provided is a steel for nitrocarburizing that ensures mechanical workability before nitrocarburizing treatment. A steel for nitrocarburizing comprises: a chemical composition containing, in mass %, C: ≥0.02% and 0.020% and ≤1.0%, Ti: >0.0050% and ≤0.015%, N: ≤0.0200%, Sb: 0.0030-0.010%, with a balance being Fe and inevitable impurities, satisfying Expression (1) or (2); and a steel microstructure where an area ratio of bainite phase is >50%, a prior austenite grain size is ≤100 μm, ≥300/μm2 Ti precipitates with an equivalent circular particle size of ≤30 nm disperse, Sb segregates to prior austenite grain boundaries.
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公开(公告)号：US11767585B2
公开(公告)日：2023-09-26
申请号：US17047795
申请日：2019-04-24
发明人： Johan Norstrom , David Thureborn , Fumito Kanno , Masaki Ishihara
CPC分类号： C22C38/50 , C21D7/13 , C21D8/065 , C21D9/0081 , C21D9/525 , C22C38/001 , C22C38/02 , C22C38/06 , C21D2211/001 , C21D2211/005 , C21D2211/008
摘要： The invention relates to a steel wire suitable for making a spring or medical wire products which remarkably improve the performance of conventional stainless steel wire. The steel comprises (in wt. %): C: 0.02 to 0.15, Si: 0.1 to 0.9, Mn: 0.8 to 1.6, Cr 16 to 20, Ni: 7.5 to 10.5, Mo: ≤3, Al: 0.5 to 2.5, Ti: ≤0.15, N: ≤0.05, optional elements, and impurities, balance Fe, wherein the total amount of Cr and Ni is 25 to 27 wt. %, and wherein the steel has a microstructure including, in volume % (vol. %), martensite: 40 to 90, austenite: 10 to 60, and delta ferrite: ≤5.
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公开(公告)号：US20230250505A1
公开(公告)日：2023-08-10
申请号：US17766390
申请日：2020-07-27
发明人： Kazuya Tokunaga , Keisuke Ando
IPC分类号： C21D9/04 , C22C38/40 , C22C38/38 , C22C38/32 , C22C38/26 , C22C38/24 , C22C38/22 , C22C38/20 , C22C38/04 , C22C38/02 , C22C38/00 , C21D7/13 , C21D1/84 , B21B1/085
CPC分类号： C21D9/04 , B21B1/085 , C21D1/84 , C21D7/13 , C22C38/02 , C22C38/002 , C22C38/04 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/32 , C22C38/38 , C22C38/40 , C21D2211/009
摘要： A rail includes a foot, a web, and a head. The web has a chemical composition containing C: 0.70 to 1.20 mass%, Si: 0.20 to 1.20 mass%, Mn: 0.20 to 1.50 mass%, P: 0.035 mass% or less, and Cr: 0.20 to 2.50 mass%, with the balance being Fe and incidental impurities. The area fraction of pearlite in the web is 95% or more, and the average size of pearlite blocks is 60 µm or less.
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公开(公告)号：US20180354081A1
公开(公告)日：2018-12-13
申请号：US15779786
申请日：2016-12-01
申请人： Babasaheb Neelkanth KALYANI , Madan Umakant TAKALE , Vijaykumar Hanumantrao KHASNIS , Amol Raghunathrao DESHMUKH , Bharat Forge Limited
发明人： Babasaheb Neelkanth Kalyani , Madan Umakant Takale , Vijaykumar Hanumantrao Khasnis , Amol Raghunathrao Deshmukh
CPC分类号： B23P15/50 , B21K1/26 , B23P15/00 , C21D7/13 , C21D9/0081 , C21D2221/00 , C21D2261/00 , F04B1/053 , F04B27/053 , F04B39/121 , F04B39/123 , F04B39/125 , F04B53/007 , F04B53/16 , F16L41/021
摘要： The present invention discloses a Fluid End and its manufacturing method. The conventional fluid end manufacturing methods involve machining of all surfaces.This demands more input stock for manufacturing process and a lot of material wastage during machining process. In the conventional processes involving open die forging followed by machining result into only about 34% utilization of material. In the present invention, fluid end component geometry is optimized. Assembly surfaces are machined whereas other or non-assembly surfaces are as-forged condition. The method of invention also results in significant reduction in machining time and chip removal. The present invention also discloses a process of manufacturing using a combination of open die and closed die forging, and machining. It involves the steps of cogging an ingot to form billet for closed die forging using open die forging, forging the billet in closed die using forging equipment, semi-finish/rough/partial machining, heat treatment, drilling and finish machining the component. Most of the non-assembly areas of the fluid end are left in as-forged condition.
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