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公开(公告)号：US20180355496A1
公开(公告)日：2018-12-13
申请号：US16061079
申请日：2016-12-01
发明人： Yusuke Nakagawa , Takeshi Suzuki , Mikito Suto , Katsumi Kojima , Yuya Baba
摘要： A steel sheet for cans has, on the surface thereof, in order from the steel sheet side, a chromium metal layer and a hydrous chromium oxide layer. The chromium metal layer is deposited in an amount of 65-200 mg/m2, and the hydrous chromium oxide layer is deposited in an amount of 3-15 mg/m2 in terms of chromium. The chromium metal layer includes: a flat chromium metal layer that has a thickness of at least 7 nm; and a granular chromium metal layer that includes granular protrusions that are formed on the surface of the flat chromium metal layer. The maximum grain size of the granular protrusions is 100 nm or smaller. The number density of the granular protrusions per unit area is 10/μm2 or higher.
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2.发明申请METHOD AND FACILITY FOR MANUFACTURING SEAMLESS STEEL PIPE WITH EXCELLENT TOUGHNESS 审中-公开制造具有优异韧性的无缝钢管的方法和设备公开(公告)号：US20150368734A1
公开(公告)日：2015-12-24
申请号：US14764813
申请日：2014-01-22
IPC分类号： C21D9/08 , C22C38/46 , C22C38/44 , C22C38/00 , C22C38/06 , C22C38/04 , C22C38/02 , C21D1/18 , C22C38/42
CPC分类号： C21D9/08 , C21D1/18 , C21D11/005 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/58
摘要： It is difficult in the related art to realize not only a decrease in material variability due to non-uniform microstructure distribution in the wall thickness direction of a pipe body but also the maintenance of satisfactory productivity of the whole heat treatment line at the same time. A method includes determining in advance whether or not the pipe body is made of a steel grade having an Ms point lower than 200° C.; leaving the pipe body of a steel grade having an Ms point lower than 200° C. additionally at room temperature (it is preferable to be transported to a holding bed 6 and left) until the temperature difference between the portion having the highest temperature and the portion having the lowest temperature in a cross section in a direction at a right angle to the pipe axis becomes less than 2.0° C. after the quenching treatment has been performed, and then performing the tempering treatment; and, on the other hand, performing a tempering treatment on the pipe body of a steel grade not having an Ms point lower than 200° C. without leaving the pipe body at room temperature after a quenching treatment has been performed.
摘要翻译： 在现有技术中难以实现由于管体的壁厚方向上的不均匀的微观结构分布导致的材料变异性的降低，而且实现了整个热处理线的满意的生产率的保持。 一种方法包括事先确定管体是否由Ms点低于200℃的钢种制成; 在室温下放置Ms点低于200℃的钢种的管体（优选被运送到保持床6并离开），直到温度最高的部分和 在进行淬火处理之后，在与管轴直角的方向上的横截面中具有最低温度的部分变得小于2.0℃，然后进行回火处理; 另一方面，在淬火处理后，在室温下不离开管体的情况下，对不具有Ms点低于200℃的钢种的管体进行回火处理。
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公开(公告)号：US10914016B2
公开(公告)日：2021-02-09
申请号：US16060206
申请日：2016-12-01
发明人： Yusuke Nakagawa , Takeshi Suzuki , Mikito Suto , Katsumi Kojima , Yuya Baba
摘要： A steel sheet for cans has, on the surface thereof, in order from the steel sheet side, a chromium metal layer and a hydrous chromium oxide layer. The chromium metal layer is deposited in an amount of 50-200 mg/m2, and the hydrous chromium oxide layer is deposited in an amount of 3-15 mg/m2 in terms of chromium. The chromium metal layer includes: a flat chromium metal layer that has a thickness of at least 7 nm; and a granular chromium metal layer that includes granular protrusions that are formed on the surface of the flat chromium metal layer. The maximum grain size of the granular protrusions is 150 nm or smaller. The number density of the granular protrusions per unit area is 10/μm2 or higher.
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公开(公告)号：US10151012B2
公开(公告)日：2018-12-11
申请号：US14916265
申请日：2014-08-04
IPC分类号： C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C21D9/08 , C22C38/00 , C22C38/58 , C21D6/00 , C21D9/14 , C21D8/10 , C22C38/40 , C22C38/42 , C22C38/54 , B21B19/04 , B21C23/00 , B22D11/00 , C21D1/18 , C21D1/613 , C22C38/02 , C22C38/04 , C22C38/06
摘要： A method of manufacturing a high-strength stainless steel pipe includes forming a steel pipe having a predetermined size, the steel having a composition comprising by mass % 0.005 to 0.05% C, 0.05 to 1.0% Si, 0.2 to 1.8% Mn, 0.03% or less P, 0.005% or less S, 14 to 20% Cr, 1.5 to 10% Ni, 1 to 5% Mo, 0.5% or less V, 0.15% or less N, 0.01% or less O, 0.002 to 0.1% Al, and Fe and unavoidable impurities as a balance; applying a quenching treatment two times or more to the steel pipe where the steel pipe is quenched by reheating to a temperature of 750° C. or above and cooling to a temperature of 100° C. or below at a cooling rate equal to or higher than an air-cooling rate; and applying a tempering treatment where the steel pipe is tempered at a temperature of 700° C. or below.
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公开(公告)号：US11377743B2
公开(公告)日：2022-07-05
申请号：US16619584
申请日：2018-06-08
发明人： Mikito Suto , Takeshi Suzuki , Yusuke Nakagawa , Katsumi Kojima , Hiroki Habazaki , Yuki Satoh
摘要： Provided are: a multilayer structure in which a titanium oxide layer exhibits excellent photocatalytic activity; and a method for producing this multilayer structure. The above-described multilayer structure comprises: a conductive part which contains a metal element A other than Ti, while having electrical conductivity; and a titanium oxide layer which is arranged on the conductive part and contains 1.0% by atom or more of the metal element A.
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6.发明申请公开(公告)号：US20170355038A1
公开(公告)日：2017-12-14
申请号：US15532293
申请日：2015-12-01
发明人： Takeshi Suzuki , Yukio Miyata , Hiroki Ota , Shinsuke Ide
IPC分类号： B23K9/23 , C22C38/04 , C22C38/02 , C21D6/00 , B23K35/30 , C22C38/42 , C22C38/44 , C22C38/50 , C22C38/46 , B23K9/028 , C21D9/08 , C22C38/00 , B23K103/04 , B23K101/06
摘要： Provided is a method for producing a circumferential weld joint. With this method, when low-carbon martensitic stainless steel pipes used for pipelines for transportation of petroleum and natural gas are subjected to circumferential welding, the circumferential welding can be performed efficiently using a low-cost welding material having a composition similar to the composition of the low-carbon martensitic stainless steel pipes. Pipe ends of low-carbon martensitic stainless steel pipes containing prescribed components are butted against each other and subjected to multi-pass arc welding using a welding material containing prescribed components. In the first pass in the multi-pass arc welding, CMT welding is performed in which the welding material is moved back and forth against a molten pool to generate an arc intermittently. In the second and subsequent passes, one selected from GMA welding, GTA welding, and the CMT welding is performed.
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公开(公告)号：US20140102907A1
公开(公告)日：2014-04-17
申请号：US14132090
申请日：2013-12-18
发明人： Takeshi Suzuki , Norihiko Nakamura , Hiroki Iwasa
CPC分类号： C25D5/10 , C23C2/08 , C23C2/26 , C23C2/28 , C23C22/08 , C23C22/20 , C23C22/73 , C23C28/321 , C23C28/322 , C23C28/34 , C25D3/30 , C25D5/48 , C25D11/36
摘要： A method of manufacturing a tin-plated steel sheet includes forming an Sn-containing plating layer on at least one surface of a steel sheet so that the mass per unit area of Sn is 0.05 to 20 g/m2; forming a first chemical conversion coating by immersing the steel sheet in a first chemical conversion solution containing tetravalent tin ions and phosphate ions or cathodically electrolyzing the steel sheet in the first chemical conversion solution; forming a second chemical conversion coating after forming the first chemical conversion coating without drying the steel sheet by immersing the steel sheet in a second chemical conversion solution containing 5 to 200 g/L of aluminum phosphate monobasic and having a pH of 1.5 to 2.4 or cathodically electrolyzing the steel sheet in the second chemical conversion solution; and drying the steel sheet.
摘要翻译： 制造镀锡钢板的方法包括在钢板的至少一个表面上形成含Sn镀层，使得每单位面积Sn的质量为0.05〜20g / m 2; 通过将钢板浸入含有四价锡离子和磷酸根离子的第一化学转化溶液中或者在第一化学转化溶液中阴极电解钢板，形成第一化学转化膜; 在形成第一化学转化膜之后，通过将钢板浸渍在含有5〜200g / L磷酸二氢铝酸盐并具有1.5〜2.4的pH或第二化学转化处理溶液中而形成第一化学转化膜的第二化学转化膜 在第二化学转化溶液中电解钢板; 并干燥钢板。
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公开(公告)号：US11339491B2
公开(公告)日：2022-05-24
申请号：US16619147
申请日：2018-06-05
发明人： Yusuke Nakagawa , Takeshi Suzuki , Mikito Suto , Katsumi Kojima , Yuya Baba , Hanyou Sou , Yoichiro Yamanaka , Shunsuke Tokui
摘要： A steel sheet for cans which exhibits excellent weldability; and a production method therefor include a steel sheet for cans with the surface of a steel sheet in order from the steel sheet side, a chromium metal layer and a hydrous chromium oxide layer. The deposited amount of the chromium metal layer is 65-200 mg/m2. The deposited amount of the hydrous chromium oxide layer in terms of chromium is 3-30 mg/m2. The chromium metal layer includes: a base part having a thickness of 7.0 nm or higher; and granular protrusions which are on the base part, have a maximum grain size of 100 nm or lower, and have a number density per unit area of at least 200 per μm2.
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公开(公告)号：US10392709B2
公开(公告)日：2019-08-27
申请号：US15475393
申请日：2017-03-31
发明人： Yuka Miyamoto , Takeshi Suzuki , Hiroki Iwasa , Norihiko Nakamura , Masao Inose , Hisato Noro , Yoichi Tobiyama
IPC分类号： C23C28/02 , C25D5/10 , C25D5/12 , C25D7/00 , C25D9/08 , C25D9/10 , C25D3/02 , C25D3/12 , C21D8/02 , C21D9/46 , C23C22/50 , C23G1/08 , C25D3/20 , C25D3/22 , C25D3/38 , C25D3/54 , C25D5/36 , C25F1/00 , C25D3/30 , C25D5/50
摘要： A coated steel sheet includes a corrosion-resistant coating composed of at least one layer selected from the group consisting of a Ni layer, a Sn layer, an Fe—Ni alloy layer, an Fe—Sn alloy layer, and an Fe—Ni—Sn alloy layer disposed on at least one surface of a steel sheet, and an adhesive coating disposed on the corrosion-resistant coating, the adhesive coating containing Zr and further containing at least one metal element selected from the group consisting of Co, Fe, Ni, V, Cu, Mn, and Zn, in total, at a ratio by mass of 0.01 to 10 with respect to Zr. The coated steel sheet has excellent humid resin adhesion and corrosion resistance, in which streaky surface defects do not occur.
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公开(公告)号：US20180363160A1
公开(公告)日：2018-12-20
申请号：US16060206
申请日：2016-12-01
发明人： Yusuke Nakagawa , Takeshi Suzuki , Mikito Suto , Katsumi Kojima , Yuya Baba
摘要： A steel sheet for cans has, on the surface thereof, in order from the steel sheet side, a chromium metal layer and a hydrous chromium oxide layer. The chromium metal layer is deposited in an amount of 50-200 mg/m2, and the hydrous chromium oxide layer is deposited in an amount of 3-15 mg/m2 in terms of chromium. The chromium metal layer includes: a flat chromium metal layer that has a thickness of at least 7 nm; and a granular chromium metal layer that includes granular protrusions that are formed on the surface of the flat chromium metal layer. The maximum grain size of the granular protrusions is 150 nm or smaller. The number density of the granular protrusions per unit area is 10/μm2 or higher.
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