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公开(公告)号：US10711336B2
公开(公告)日：2020-07-14
申请号：US16184434
申请日：2018-11-08
发明人： Soshi Fujita , Shintaro Yamanaka
IPC分类号： C21D9/46 , C23C2/28 , C23C2/06 , C22C18/00 , C22C38/00 , C22C38/06 , B32B15/01 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/58 , C21D6/00 , C21D8/02 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C23C2/02
摘要： Provided is an alloyed hot-dip galvanized steel sheet including a base steel sheet, the base steel sheet containing a given amount of C, Si, Mn, and other elements. The alloyed hot-dip galvanized steel sheet is provided with an alloyed hot-dip galvanized layer on a surface of the base steel sheet, the alloyed hot-dip galvanized layer containing, in mass %, Fe: more than or equal to 5% and less than or equal to 15%, and having a thickness of more than or equal to 3 μm and less than or equal to 30 μm. The alloyed hot-dip galvanized steel sheet includes an A layer immediately under the surface of the base steel sheet, the A layer being formed in the base steel sheet and having a thickness of more than or equal to 2 μm and less than or equal to 20 μm from the surface of the base steel sheet, containing more than or equal to 50 vol % of a ferrite structure, and containing more than or equal to 90 mass % of unoxidized Fe, less than or equal to 10 mass % of a total of contents of oxides of Fe, Si, Mn, P, S, and Al, and less than 0.05 mass % of C.
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公开(公告)号：US10704132B2
公开(公告)日：2020-07-07
申请号：US16060331
申请日：2016-02-25
发明人： Takeshi Yasui , Hiroyuki Kawata , Yuji Yamaguchi , Ryosuke Komami , Satoshi Uchida , Akinobu Murasato
IPC分类号： C23C2/06 , C23C2/02 , C23C2/28 , C23C2/40 , C21D9/46 , C21D8/02 , C21D6/00 , C22C38/28 , C22C38/22 , C22C38/16 , C22C38/08 , C22C38/14 , C22C38/12 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/38 , C23C2/26 , C23C2/00 , C23C28/02 , C23C30/00 , C23C2/04 , B32B15/04 , B32B15/01 , B32B15/18 , C22C38/18 , C22C38/40 , C22C38/48 , C22C18/00 , C22C38/20 , C22C38/44 , C22C38/50 , C22C38/42 , C22C38/54 , C22C38/26 , C22C38/58 , C22C38/32 , C22C38/34 , C23G1/00
摘要： A high-strength hot-dip galvanized steel sheet excellent in impact resistance and worked portion corrosion resistance including a hot-dip galvanized plating layer on a steel sheet base material whose tensile strength is 590 MPa or more, wherein the plating layer includes projecting alloy layers being in contact with the steel sheet base material, a number density of the projecting alloy layers is 4 pieces/mm or more, wherein the steel sheet base material includes: a miniaturized layer being directly in contact with the interface between the steel sheet base material and the plating layer; a decarburized layer being in contact with the miniaturized layer; and an inner layer other than the miniaturized layer and the decarburized layer, and one or more kinds of oxides of Si and Mn are contained in layers of the miniaturized layer, the decarburized layer, and the projecting alloy layers.
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公开(公告)号：US10697036B2
公开(公告)日：2020-06-30
申请号：US15556066
申请日：2016-03-07
发明人： Shusaku Takagi , Akihide Nagao , Mitsuo Kimura , Hiroshi Okano
IPC分类号： C22C38/44 , C22C38/38 , C22C38/06 , C22C38/02 , C22C38/00 , F17C1/00 , C21D6/00 , C21D9/08 , C21D8/10 , C21D7/12 , C22C38/12 , C22C38/04 , C22C38/18 , C22C38/22 , C22C38/58 , F16L9/00 , F16L9/18 , C22C38/08 , F16L9/02 , C22C38/40 , B32B15/01 , B32B15/04 , B32B15/00 , B32B15/18 , B32B1/08
摘要： Steel material for composite pressure vessel liners that, when used as raw material for manufacturing a composite pressure vessel liner, yields a liner having sufficient strength and a high fatigue limit and enables the manufacture of an inexpensive composite pressure vessel is provided. Steel material for composite pressure vessel liners comprises: a chemical composition containing, in mass %, C: 0.10% to 0.60%, Si: 0.01% to 2.0%, Mn: 0.1% to 5.0%, P: 0.0005% to 0.060%, S: 0.0001% to 0.010%, N: 0.0001% to 0.010%, and Al: 0.01% to 0.06%, with a balance being Fe and incidental impurities; and a metallic microstructure in which a mean grain size of prior austenite grains is 20 μm or less, and a total area ratio of martensite and lower bainite is 90% or more.
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94.发明授权公开(公告)号：US10648057B1
公开(公告)日：2020-05-12
申请号：US16596017
申请日：2019-10-08
申请人： MM Metals USA, LLC
发明人： Daniel Shaw , James Saville , John Williams , Trevor N. Mustoe
摘要： A method and system for recovering a high yield of low carbon ferrochrome from chromite and low carbon ferrochrome produced by the method. A stoichiometric mixture of feed materials including scrap aluminum granules, lime, silica sand, and chromite ore are provided into a plasma arc furnace. The scrap aluminum granules are produced from used aluminum beverage containers. The feed materials are heated, whereupon the aluminum in the aluminum granules produces an exothermic reaction reducing the chromium oxide and iron oxide in the chromite to produce molten low carbon ferrochrome with molten slag floating thereon. The molten low carbon ferrochrome is extracted, solidified and granulated into granules of low carbon ferrochrome. The molten slag is extracted, solidified and granulated into granules of slag.
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公开(公告)号：US10648054B2
公开(公告)日：2020-05-12
申请号：US15509353
申请日：2015-08-20
IPC分类号： C21D6/00 , C22C38/04 , C22C38/02 , C21D9/46 , C23C2/02 , C23C2/06 , C23C2/40 , C23C2/28 , C22C38/00 , C21D8/02 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/32 , C23F17/00
摘要： A method for producing high-strength galvanized steel sheets having excellent coating adhesion, workability and appearance. The method comprises hot rolling a slab comprising, by mass %, C: 0.05 to 0.30%, Si: 0.1 to 2.0% and Mn: 1.0 to 4.0%, then coiling the steel sheet into a coil at a specific temperature TC, and pickling the steel sheet, cold rolling the hot-rolled steel sheet resulting from the hot rolling, annealing the cold-rolled steel sheet resulting from the cold rolling under specific conditions, and galvanizing the annealed sheet resulting from the annealing in a galvanizing bath containing 0.12 to 0.22 mass % Al.
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公开(公告)号：US10605374B2
公开(公告)日：2020-03-31
申请号：US15822857
申请日：2017-11-27
发明人： Seisuke Takaki , Hiroshi Oshige , Ayato Oikawa
IPC分类号： F16K25/00 , F02M63/00 , C22C38/18 , C22C38/12 , C22C38/10 , C22C38/04 , C22C38/02 , C22C33/02
摘要： A valve seat insert made of an iron-base sintered alloy is configured to have a structure in which the base matrix phase is a fine carbide precipitation phase in which a fine carbide being 10 μm or less in size is precipitated and which has a hardness of 550 HV or more in Vickers hardness; and in the base matrix phase, hard-particles having a hardness of 650-1200 HV in Vickers hardness are dispersed in an area percentage of 20-40%, a diffusional phase is formed in an area percentage of more than 0% and not more than 5%, and solid-lubricant particles are dispersed in an area percentage of 0-5%. Even if a valve having a high face hardness of 400 HV or more, or 600 HV or more is used, a facing valve seat insert wears only slightly, improving valve train durability.
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公开(公告)号：US10597741B2
公开(公告)日：2020-03-24
申请号：US15038223
申请日：2014-11-13
IPC分类号： C21D1/74 , C21D9/56 , C25F1/06 , C22C38/06 , C21D9/46 , C22C38/00 , C22C38/60 , C21D8/04 , C21D1/76 , C22C38/02 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18
摘要： A high-strength steel sheet and a method for manufacturing a high-strength steel sheet having excellent phosphatability and excellent corrosion resistance after electrodeposition coating has been performed, even in the case where the contents of Si and Mn are high. The method may comprise annealing a steal sheet by using a continuous annealing method, performing a heating process, controlling the maximum end-point temperature of a steel sheet in the annealing furnace, controlling the traveling time of the steel sheet, and controlling the dew point of the atmosphere.
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公开(公告)号：US10578409B2
公开(公告)日：2020-03-03
申请号：US16111673
申请日：2018-08-24
发明人： Lonnie Burrow
IPC分类号： F42B5/30 , F42C19/08 , F42B33/00 , F42B5/02 , B22F3/10 , B22F5/00 , C22C1/04 , F42B5/307 , F42B33/02 , B22F3/00 , B22F3/22 , B22F5/06 , C22C14/00 , C22C33/02 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/42 , C22C38/44 , C22C38/48 , C22C38/58 , C04B35/64 , F42B5/313 , F42B33/04
摘要： The present invention provides a primer insert for a polymer ammunition cartridge comprising: a top surface; a bottom surface opposite the top surface; a coupling element that extends from the bottom surface, wherein the coupling element comprises an interior surface and an exterior surface, wherein the interior surface comprises: a transition region that transitions from the bottom surface to a second segment wherein the transition region has a radius of from 0.02 to 0.08; a first segment extending from the second segment and terminates at a tip, wherein the first segment has a first segment distance from 0.05 to 0.09 inches and the second segment has a second segment distance from 0.05 to 0.09 inches, wherein the second segment has a second segment angle from +3 to −3 degrees relative to the first segment angle and the first segment has a first segment angle from +6 to −6 degrees from perpendicular to the top surface; a primer recess in the top surface that extends toward the bottom surface; a primer flash aperture positioned in the primer recess through the bottom surface; and a flash aperture groove in the primer recess and positioned around the primer flash aperture and adapted to receive a polymer overmolding through the primer flash aperture.
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公开(公告)号：US20200063234A1
公开(公告)日：2020-02-27
申请号：US16611642
申请日：2018-05-10
IPC分类号： C21D9/46 , C21D8/12 , C21D6/00 , C22C38/60 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/18 , C22C38/16 , C22C38/08 , C22C38/12
摘要： A grain-oriented electrical steel sheet having excellent iron loss property is produced from a steel slab containing, by mass %, C: 0.002-0.15%, Si: 2.5-6.0%, Mn: 0.01-0.80%, Al: 0.010-0.050% and N: 0.003-0.020%, when: a heating rate between 500-700° C. In decarburization annealing is not less than 80° C./s, a surface roughness Ra of a work roll in final cold rolling is 0.01-3.0 μm, a total content of alkaline earth metals to MgO in annealing separator is 0-5 mass %, an average length L in rolling direction of passed crystal grains is not more than 25 mm, a ratio of crystal grains having a length in rolling direction of not less than 0.5 μm is 40-90%, and an existence ratio of alkaline earth metal sulfides having a size corresponding to circle of not less than 0.5 μm in a cross section of forsterite film is not more than 0.2/μm per unit length in sheet width direction.
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公开(公告)号：US10571228B2
公开(公告)日：2020-02-25
申请号：US16111692
申请日：2018-08-24
发明人： Lonnie Burrow
IPC分类号： F42B5/30 , F42C19/08 , F42B33/00 , F42B5/02 , B22F3/10 , B22F5/00 , C22C1/04 , F42B5/307 , F42B33/02 , B22F3/00 , B22F3/22 , B22F5/06 , C22C14/00 , C22C33/02 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/42 , C22C38/44 , C22C38/48 , C22C38/58 , C04B35/64 , F42B5/313 , F42B33/04
摘要： The present invention provides a primer insert for a polymer ammunition cartridge comprising: a top surface; a bottom surface opposite the top surface; a coupling element that extends from the bottom surface, wherein the coupling element comprises an interior surface and an exterior surface, wherein the interior surface comprises: a transition region that transitions from the bottom surface to a second segment wherein the transition region has a radius of from 0.02 to 0.2; a first segment extending from the second segment and terminates at a tip, wherein the first segment has a first segment distance from 0.02 to 0.18 inches and the second segment has a second segment distance from 0.02 to 0.18 inches, wherein the second segment has a second segment angle from +3 to −3 degrees relative to the first segment angle and the first segment has a first segment angle from +6 to −6 degrees from perpendicular to the top surface; a primer recess in the top surface that extends toward the bottom surface; a primer flash aperture positioned in the primer recess through the bottom surface; and a flash aperture groove in the primer recess and positioned around the primer flash aperture and adapted to receive a polymer overmolding through the primer flash aperture.
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