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1
EP3438304A1
Publication/Patent Number: EP3438304A1
Publication date: 2019-02-06
Application number: 17773605.5
Filing date: 2017-01-30
Assignee: Hitachi, Ltd.
Abstract: An object of the invention is to provide a two-phase alloy which contains inexpensive Cr as a main component, and which is superior in strength properties including corrosion resistance and toughness, and in abrasion resistance to conventional ones under a high corrosion circumstance such as in an oil well. The invention is a Cr based two-phase alloy including two phases of a ferrite phase and an austenite phase in a mixed state, in which a chemical composition of the Cr based two-phase alloy consists of a major component, an accessory component, impurities, a first optional accessory component, and a second optional accessory component, and the major component consists of 33% by mass or more and 65% by mass or less of Cr, 18% by mass or more and 40% by mass or less of Ni, and 10% by mass or more and 33% by mass or less of Fe. An object of the invention is to provide a two-phase alloy which contains inexpensive Cr as a main component, and which is superior in strength properties including corrosion resistance and toughness, and in abrasion resistance to conventional ones under a high corrosion ...more ...less
2
US20190071754A1
Publication/Patent Number: US20190071754A1
Publication date: 2019-03-07
Application number: 16/084,299
Filing date: 2017-01-30
Assignee: HITACHI, LTD.
Abstract: An object of the invention is to provide a two-phase alloy which contains inexpensive Cr as a main component, and which is superior in strength properties including corrosion resistance and toughness, and in abrasion resistance to conventional ones under a high corrosion circumstance such as in an oil well. The invention is a Cr based two-phase alloy including two phases of a ferrite phase and an austenite phase in a mixed state, in which a chemical composition of the Cr based two-phase alloy consists of a major component, an accessory component, impurities, a first optional accessory component, and a second optional accessory component, and the major component consists of 33% by mass or more and 65% by mass or less of Cr, 18% by mass or more and 40% by mass or less of Ni, and 10% by mass or more and 33% by mass or less of Fe. An object of the invention is to provide a two-phase alloy which contains inexpensive Cr as a main component, and which is superior in strength properties including corrosion resistance and toughness, and in abrasion resistance to conventional ones under a high corrosion ...more ...less
3
EP3441492A1
Publication/Patent Number: EP3441492A1
Publication date: 2019-02-13
Application number: 17773522.2
Filing date: 2017-01-19
Assignee: Hitachi, Ltd.
Abstract: There is provided a Cr-based two-phase alloy including two phases of a ferrite phase and an austenite phase that are mixed with each other. A chemical composition of the Cr-based two-phase alloy consists of a main component, an auxiliary component, impurities, a first optional auxiliary component, and a second optional auxiliary component. The main component consists of 33-61 mass % Cr, 18-40 mass % Ni and 10-33 mass % Fe, and a total content of the Ni and the Fe is 37-65 mass %. The auxiliary component consists of 0.1-2 mass % Mn, 0.1-1 mass % Si, 0. 005-0. 05 mass % Al, and 0. 02-0. 3 mass % Sn. The impurities include 0.04 mass % or less of P, 0.01 mass % or less of S, 0.03 mass % or less of C, 0.04 mass % or less of N, and 0.05 mass % or less of O. There is provided a Cr-based two-phase alloy including two phases of a ferrite phase and an austenite phase that are mixed with each other. A chemical composition of the Cr-based two-phase alloy consists of a main component, an auxiliary component, impurities, a first optional ...more ...less
4
US20190100825A1
Publication/Patent Number: US20190100825A1
Publication date: 2019-04-04
Application number: 16/086,331
Filing date: 2017-01-19
Assignee: HITACHI, LTD.
Abstract: There is provided a Cr-based two-phase alloy including two phases of a ferrite phase and an austenite phase that are mixed with each other. A chemical composition of the Cr-based two-phase alloy consists of a main component, an auxiliary component, impurities, a first optional auxiliary component, and a second optional auxiliary component. The main component consists of 33-61 mass % Cr, 18-40 mass % Ni and 10-33 mass % Fe, and a total content of the Ni and the Fe is 37-65 mass %. The auxiliary component consists of 0.1-2 mass % Mn, 0.1-1 mass % Si, 0.005-0.05 mass % Al, and 0.02-0.3 mass % Sn. The impurities include 0.04 mass % or less of P, 0.01 mass % or less of S, 0.03 mass % or less of C, 0.04 mass % or less of N, and 0.05 mass % or less of O. There is provided a Cr-based two-phase alloy including two phases of a ferrite phase and an austenite phase that are mixed with each other. A chemical composition of the Cr-based two-phase alloy consists of a main component, an auxiliary component, impurities, a first optional ...more ...less
5
JP2018048509A
Publication/Patent Number: JP2018048509A
Publication date: 2018-03-29
Application number: 2016185531
Filing date: 2016-09-23
Assignee: SHIMIZU CORP
Abstract: PROBLEM TO BE SOLVED: To provide a management method and a management device for tunnel excavation that estimates a self position of a 3D scanner from a position measurement result of the 3D scanner.SOLUTION: The present invention relates to a method of managing tunnel excavation using a management device 100 comprising: a 3D scanner 1 which takes a position measurement of a tunnel being constructed by acquiring three-dimensional position data on an excavation plane; an arithmetic unit 2 which performs an operation to estimate a self position of the 3D scanner 1 from a measurement result of the 3D scanner 1; and an inclinometer 3 which measures an inclination of the 3D scanner 1 so as to control an installation attitude of the 3D scanner 1. The method includes the steps of: taking, after installing the 3D scanner 1 in the tunnel in a predetermined attitude, a position measurement in the tunnel by the 3D scanner 1; and estimating, from a position measurement result of the 3D scanner 1, coordinate values of the center position of a sensor 4 of the 3D scanner 1 in a coordinate system of the tunnel.SELECTED DRAWING: Figure 1 PROBLEM TO BE SOLVED: To provide a management method and a management device for tunnel excavation that estimates a self position of a 3D scanner from a position measurement result of the 3D scanner.SOLUTION: The present invention relates to a method of managing tunnel ...more ...less
6
WO2018066303A1
Publication/Patent Number: WO2018066303A1
Publication date: 2018-04-12
Application number: 2017032485
Filing date: 2017-09-08
Assignee: Hitachi, Ltd.
Abstract: The purpose of the present invention is to provide a product that uses a low cost Cr-based two phase alloy with mechanical properties equal to prior art and higher corrosion resistance than the past, and a production method therefor. This Cr-based two phase alloy product that uses a Cr-based two phase alloy in which the two phases, ferrite phases and austenite phases, are intermixed is characterized in that: the chemical composition of the Cr-based two phase alloy is made of main components, secondary components, impurities and optional secondary components; the main components are 34–70 mass% of Cr, 17–42 mass% of Ni and 10–33 mass% Fe, the mass content of Cr being the highest; the secondary components are 0.1–2 mass% of Mn, 0.1–1 mass% of Si, 0.005–0.05 mass% of Al, 0.06–0.2 mass% of N; and the impurities include greater than 0 mass% to 0.04 mass% of P, greater than 0 mass% to 0.01 mass% of S, greater than 0 mass% to 0.03 mass% of C, and greater than 0 mass% to 0.05 mass% of O. The purpose of the present invention is to provide a product that uses a low cost Cr-based two phase alloy with mechanical properties equal to prior art and higher corrosion resistance than the past, and a production method therefor. This Cr-based two phase alloy product that ...more ...less
7
JP2017058312A
Publication/Patent Number: JP2017058312A
Publication date: 2017-03-23
Application number: 2015184965
Filing date: 2015-09-18
Assignee: SHIMIZU CORP
Abstract: PROBLEM TO BE SOLVED: To provide a measurement system which can easily and exactly confirm a deformation-necessary point
8
JP2017039498A
Publication/Patent Number: JP2017039498A
Publication date: 2017-02-23
Application number: 2015160477
Filing date: 2015-08-17
Assignee: SHIMIZU CORP
Abstract: PROBLEM TO BE SOLVED: To provide a silo management system capable of performing the management of grains
9
JP2017218792A
Publication/Patent Number: JP2017218792A
Publication date: 2017-12-14
Application number: 2016113875
Filing date: 2016-06-07
Assignee: SHIMIZU CORP
Abstract: 【課題】施工管理の作業時間を短縮することができる施工管理装置および施工管理方法を提供する。【解決手段】施工対象物の施工予定箇所の3次元形状データを取得する3次元形状データ取得手段12と、3次元形状データ取得手段12により取得した3次元形状データに基づいて施工必要箇所を判定し、施工予定箇所に照射する画像を作成する演算手段16と、演算手段16により作成した画像を施工予定箇所に照射する画像照射手段14とを備え、施工対象物の施工管理を行う装置10であって、3次元形状データ取得手段12の取得方向および画像照射手段14の照射方向の傾斜角度を検出する傾斜角検出手段24と、回転角度を検出する回転角検出手段26とをさらに備え、演算手段16は、傾斜角検出手段24および回転角検出手段26による検出結果に基づいて施工必要箇所を判定し、施工予定箇所に照射する画像を作成するようにする。【選択図】図1 【課題】施工管理の作業時間を短縮することができる施工管理装置および施工管理方法を提供する。【解決手段】施工対象物の施工予定箇所の3次元形状データを取得する3次元形状データ取得手段12と、3次元形状データ取得手段12により取得した3次元形状データに基づいて施工必要箇所を判定し、施工予定箇所に照射する画像を作成する演算手段16と、演算手段16により作成した画像を施工予定箇所に照射する画像照射手段14とを備え、施工対象物の施工管理を行う装置10であって、3次元形状データ取得手段12の取得方向および画像照射手段14の照射方向の傾斜角度を検出する傾斜角検出手段24 ...more ...less
10
WO2017037851A1
Publication/Patent Number: WO2017037851A1
Publication date: 2017-03-09
Application number: 2015074786
Filing date: 2015-08-31
Assignee: Hitachi, Ltd.
Abstract: The purpose of the present invention is to provide a low-cost Cr-based two-phase alloy which is a metal material suitable for applications in a highly corrosive environment and in a temperature range of oil wells or the like
11
WO2017169056A1
Publication/Patent Number: WO2017169056A1
Publication date: 2017-10-05
Application number: 2017003081
Filing date: 2017-01-30
Assignee: Hitachi, Ltd.
Abstract: The purpose of the present invention is to provide a two-phase alloy having Cr
12
WO2017168640A1
Publication/Patent Number: WO2017168640A1
Publication date: 2017-10-05
Application number: 2016060432
Filing date: 2016-03-30
Assignee: Hitachi, Ltd.
Abstract: The purpose of the present invention is to provide a product obtained using a low cost chromium-based two-phase alloy having high corrosion resistance and good mechanical characteristics at levels not lower than the prior art
13
WO2017168806A1
Publication/Patent Number: WO2017168806A1
Publication date: 2017-10-05
Application number: 2016081573
Filing date: 2016-10-25
Assignee: Hitachi, Ltd.
Abstract: A Cr-based two-phase alloy product according to the present invention is a product in which a Cr-based two-phase alloy in which two phases including a ferrite phase and an austenite phase are mixed is used
14
US20170292175A1
Publication/Patent Number: US20170292175A1
Publication date: 2017-10-12
Application number: 15/510,322
Filing date: 2015-09-28
Assignee: HITACHI, LTD.
Abstract: An object of the invention is to provide: a two-phase alloy as a metal material that can be preferably utilized under circumstances of a temperature range and a high corrosion as in an oil well, the two-phase alloy having a high corrosion resistance and good mechanical properties that are equivalent or more than those of conventional ones, and saving a cost; a product of the two-phase alloy; and a method for producing the product. There is provided a two-phase alloy containing Cr as a major component and including two phases of an austenite phase and a ferrite phase in a mixed state. The alloy has a chemical composition containing: 34-70 mass % of Cr; 17-45 mass % of Ni; 10-35 mass % of Fe; 0.1-2 mass % of Mn; 0.1-1 mass % of Si; and impurities. The total content of the Ni and the Fe is 30-65 mass %. An object of the invention is to provide: a two-phase alloy as a metal material that can be preferably utilized under circumstances of a temperature range and a high corrosion as in an oil well, the two-phase alloy having a high corrosion resistance and good mechanical ...more ...less
15
WO2017168972A1
Publication/Patent Number: WO2017168972A1
Publication date: 2017-10-05
Application number: 2017001626
Filing date: 2017-01-19
Assignee: Hitachi, Ltd.
Abstract: Provided are: a low cost Cr-based two-phase alloy having corrosion resistance at least as high and mechanical properties at least as good as conventional technology; and a product using said two-phase alloy. This Cr-based two-phase alloy has two phases
16
EP3202934A1
Publication/Patent Number: EP3202934A1
Publication date: 2017-08-09
Application number: 15845890.1
Filing date: 2015-09-28
Assignee: Hitachi, Ltd.
Abstract: An object of the invention is to provide: a two-phase alloy as a metal material that can be preferably utilized under circumstances of a temperature range and a high corrosion as in an oil well, the two-phase alloy having a high corrosion resistance and good mechanical properties that are equivalent or more than those of conventional ones, and saving a cost; a product of the two-phase alloy; and a method for producing the product. There is provided a two-phase alloy containing Cr as a major component and including two phases of an austenite phase and a ferrite phase in a mixed state. The alloy has a chemical composition containing: 34-70 mass % of Cr; 17-45 mass % of Ni; 10-35 mass % of Fe; 0.1-2 mass % of Mn; 0.1-1 mass % of Si; and impurities. The total content of the Ni and the Fe is 30-65 mass %. An object of the invention is to provide: a two-phase alloy as a metal material that can be preferably utilized under circumstances of a temperature range and a high corrosion as in an oil well, the two-phase alloy having a high corrosion resistance and good mechanical ...more ...less
17
JP2016084493A
Publication/Patent Number: JP2016084493A
Publication date: 2016-05-19
Application number: 2014216821
Filing date: 2014-10-24
Assignee: HITACHI LTD
Abstract: PROBLEM TO BE SOLVED: To improve the mechanical properties and corrosion resistance of stainless steel and also to reduce its residual stress.SOLUTION: In Fe based stainless steel containing Cr by 15% or more
18
JP5978095B2
Publication/Patent Number: JP5978095B2
Publication date: 2016-08-24
Application number: 2012230431
Filing date: 2012-10-18
Abstract: PROBLEM TO BE SOLVED: To provide an austenite stainless steel reducing sensitivity to occurrence of an irradiation induced stress corrosion crack.SOLUTION: An austenite stainless steel contains C:0.03 to 0.04 wt.%
19
JP5916392B2
Publication/Patent Number: JP5916392B2
Publication date: 2016-05-11
Application number: 2012006996
Filing date: 2012-01-17
Abstract: PROBLEM TO BE SOLVED: To provide a powder soft magnetic material
20
WO2016052445A1
Publication/Patent Number: WO2016052445A1
Publication date: 2016-04-07
Application number: 2015077398
Filing date: 2015-09-28
Assignee: Hitachi, Ltd.
Abstract: The purpose of the present invention is to provide a two-phase alloy which is a metallic material suitable even for use in highly corrosive environments with a temperature range as in oil wells and which has high corrosive resistance equal or superior to that of conventional ones