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1.发明专利
公开(公告)号：JP2003027134A
公开(公告)日：2003-01-29
申请号：JP2001209401
申请日：2001-07-10
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： AMAYA TAKASHI , ANRAKU TOSHIRO
Abstract: PROBLEM TO BE SOLVED: To provide martensitic stainless steel with milscale which has no generation of rust in air atmosphere, and to provide a production method therefor. SOLUTION: In the martensitic stainless steel with milscale, the lowest Cr concentration in the range from the boundary between a base material and milscale to a position of 5 μm to the side of the base material is >=9%, and the content of Cr in the base material is 9.2 to 13%. In the production method therefor, the steel consisting of a base material having a Cr concentration of 9.2 to 13% is subjected to final heat treatment at >=900 deg.C, and is made into a product as it is.
Abstract translation: 要解决的问题：提供在空气气氛中不产生锈蚀的马氏体不锈钢，并提供其制造方法。 解决方案：在具有密度的马氏体不锈钢中，从基材和密度之间的边界到基材侧的5μm的位置之间的最低Cr浓度为> = 9％，Cr的含量 在基料中为9.2〜13％。 在其制造方法中，将Cr浓度为9.2〜13％的基材组成的钢在> = 900℃下进行最终热处理，并原样制成产品。
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公开(公告)号：JP2002180210A
公开(公告)日：2002-06-26
申请号：JP2000384965
申请日：2000-12-19
Applicant: SUMITOMO METAL IND
Inventor： KONDO KUNIO , AMAYA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive low C martensitic stainless steel which combines excellent toughness and corrosion resistance, and in which the content of Ni is low such as
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3.发明专利
公开(公告)号：JPH11310855A
公开(公告)日：1999-11-09
申请号：JP11657398
申请日：1998-04-27
Applicant: SUMITOMO METAL IND
Inventor： AMAYA TAKASHI , KONDO KUNIO
Abstract: PROBLEM TO BE SOLVED: To provide a martensitic stainless steel capable of exhibiting sufficient corrosion resistance (sulfide stress corrosion cracking resistance) under the environment where chloride ions, carbon dioxide gas, and hydrogen sulfide gas coexist together. SOLUTION: The steel has a composition which contains, by weight, =2 elements selected from proper amounts of Si, Mn, Al, Ni, Mo, W, Ca, Mg, La, Ce, Ti, Zr, and Nb, and it is desirable to control the contents of P, S, N, and O among impurities to specific values or below, respectively. Further, this steel can be obtained by merely performing air cooling or rapid cooling (water cooling) after the finishing stage of plastic working without delay or after temporary reheating to a temperature in the austenite region.
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公开(公告)号：JPH08142979A
公开(公告)日：1996-06-04
申请号：JP28235194
申请日：1994-11-17
Applicant: SUMITOMO METAL IND
Inventor： KISHIKAWA HIROSHI , YUKI HIDEAKI , KAMIMURA TAKAYUKI , AMAYA TAKASHI
Abstract: PURPOSE: To provide an efficient and economical corrosion protecting method of a ballast tank of a ship. CONSTITUTION: In a corrosion protecting method where a steel structure part in a ballast tank is corrosion protected by filling the inert gas in a space part in the ballast tank of a ship, the inner wall surface of the ballast tank is covered by the film of 10-50μm in dry film thickness consisting of the rust-proof paint containing >=5wt.% rust-proof paint. The sufficient corrosion protecting performance is demonstrated only by covering the surface of the regular steel member constituting the ballast tank with the relatively thin rustproof film, and the usage of the rustproof paint can be reduced.
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公开(公告)号：JP2012177205A
公开(公告)日：2012-09-13
申请号：JP2012121632
申请日：2012-05-29
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： AMAYA TAKASHI , OGAWA KAZUHIRO , TANIYAMA AKIRA , UEDA MASAKATSU , TAKABE HIDEKI
CPC classification number: C22C38/02 , C22C38/005 , C22C38/04 , C22C38/06 , C22C38/40
Abstract: PROBLEM TO BE SOLVED: To provide a martensitic stainless steel for a welded structure, which is excellent in SCC resistance in a weld part in Sweet environments.SOLUTION: The martensitic stainless steel for the welded structure includes, in mass%, 0.001-0.05% C, 0.05-1% Si, 0.05-2% Mn, ≤0.03% P, 0.0005-0.1% REM, 8-16% Cr, 0.1-9% Ni, and 0.001-0.1% sol.Al; contains one or more of 0.005-0.5% Ti, 0.005-0.5% Zr, 0.005-0.5% Hf, 0.005-0.5% V, and 0.005-0.5% Nb; contains one or more of 0.0005-0.01% Ca, and 0.0005-0.01% Mg; and contains ≤0.005% O, ≤0.1% N, and the balance of Fe and impurities. The content of P and REM satisfies P≤0.6×REM.
Abstract translation: 要解决的问题：提供用于焊接结构的马氏体不锈钢，其在甜蜜环境中的焊接部分中的SCC电阻优异。 解决方案：用于焊接结构的马氏体不锈钢以质量％计含有0.001-0.05％C，0.05-1％Si，0.05-2％Mn，≤0.03％P，0.0005-0.1％REM，8- 16％Cr，0.1-9％Ni和0.001-0.1％sol.Al; 含有0.005-0.5％Ti，0.005-0.5％Zr，0.005-0.5％Hf，0.005-0.5％V和0.005-0.5％Nb中的一种或多种; 含有0.0005-0.01％Ca和0.0005-0.01％Mg中的一种或多种; 含有≤0.005％O，≤0.1％N，余量为Fe和杂质。 P和REM的含量满足P≤0.6×REM。 版权所有（C）2012，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2009030153A
公开(公告)日：2009-02-12
申请号：JP2008010557
申请日：2008-01-21
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： SAGARA MASAYUKI , SUWABE HITOSHI , AMAYA TAKASHI , KIMURA SHIGEMITSU , IGARASHI MASAAKI
CPC classification number: C22C38/02 , C21D6/004 , C21D8/10 , C21D8/105 , C21D9/14 , C22C38/04 , C22C38/42 , C22C38/44
Abstract: PROBLEM TO BE SOLVED: To provide a process for the production of a high alloy steel pipe which permits pipe making by hot working and which exhibits satisfactory ductility in cold working conducted after pipe making for the purpose of attaining higher strength and is excellent in corrosion resistance. SOLUTION: The process for the production of the high alloy steel pipe by making a high alloy steel pipe stock having a chemical composition which contains by mass ≤0.03% C, ≤1.0% Si, 0.05-1.5% Mn, ≤0.03% P, ≤0.03% S, >22-40% Ni, 20-30% Cr, 0.01- 0.05-0.30% N, ≤0.010% O and the balance Fe with impurities and in which the product of N content and O content satisfies expression (1), by hot working and then subjecting the pipe stock to cold working, is characterized in that the final step of the cold working is conducted under conditions that the reduction ratio (Rd) in terms of reduction of a sectional area satisfies expression (2), the pipe stock containing Ca, Mg and rare-earth metal elements optionally: N×O≤0.001...(1), 15≤Rd(%)≤370×(C+N)...(2), wherein N, O and C represent the content (mass%) of respective elements and Rd represents the reduction ratio (%) in terms of reduction of the sectional area. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：提供一种制造高合金钢管的方法，该高合金钢管允许通过热加工进行制管，并且在制造后在冷加工中表现出令人满意的延展性以获得更高的强度并且是优异的 耐腐蚀性。 解决方案：通过制备具有质量≤0.03％C，≤1.0％Si，0.05-1.5％Mn，≤0.03质量％的化学组成的高合金钢管材料，生产高合金钢管的方法 ％P，≤0.03％S，> 22-40％Ni，20-30％Cr，0.01- <4.0％Mo，0-4.0％Cu，0.001-0.30％Al，> 0.05-0.30％N，≤0.010％ O，余量为Fe的杂质，其中N含量和O含量的产物满足表达式（1），通过热加工然后对管材进行冷加工，其特征在于进行冷加工的最后步骤 在截面积减小率的减少率（Rd）满足式（2）的条件下，含有Ca，Mg和稀土金属元素的管材料任选地为：N×O≤0.001...（1）， 15≤Rd（％）≤370×（C + N）...（2）其中，N，O和C表示各元素的含量（质量％），Rd表示还原率（％） 的截面积。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2002212684A
公开(公告)日：2002-07-31
申请号：JP2001014700
申请日：2001-01-23
Applicant: SUMITOMO METAL IND
Inventor： KONDO KUNIO , AMAYA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a martensitic stainless steel which has high temperature strength as well. SOLUTION: The steel has a composition containing, by mass, 0.001 to 0.04% C, 0.05 to 1% Si, 0.05 to 1.5% Mn, 10 to 14% Cr, 1.5 to 8% Ni, 0.0005 to 0.05% Al and 0.001 to 0.07% N as fundamental components, and, if required, containing one or more selected from Mo, Cu, Ti, V, Nb, Zr, Ca, Mg, rare earth metals and B, and in which the content of P as impurities is controlled to
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公开(公告)号：JP2000119817A
公开(公告)日：2000-04-25
申请号：JP29202698
申请日：1998-10-14
Applicant: SUMITOMO METAL IND
Inventor： AMAYA TAKASHI , KONDO KUNIO , UEDA MASAKATSU
Abstract: PROBLEM TO BE SOLVED: To obtain a stainless steel tube with a martensitic single phase structure free from quenching cracks caused by water quenching in the producing process and excellent in strength and toughness by specifying the contents of C, Si, Mn, Cr and Ni and specifying the relation between the thickness of the steel tube and the contents of C and Cr. SOLUTION: In a martensitic stainless steel tube having a compsn. contg., by weight, 0.005 to 0.2% C,
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公开(公告)号：JPH11302802A
公开(公告)日：1999-11-02
申请号：JP36860898
申请日：1998-12-25
Applicant: SUMITOMO METAL IND
Inventor： HIDAKA YASUYOSHI , ANRAKU TOSHIRO , AMAYA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a martensitic stainless steel product having a scale layer which is practically free from peeling off and falling off in the course of manufacture or transportation after shipment from a factory and exhibits excellent corrosion resistance even in the case where the product is a steel pipe and this steel pipe is used, e.g. for oil well pipe and line pipe, and its manufacture. SOLUTION: In the stainless steel product, a base material is composed of martensitic stainless steel containing
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公开(公告)号：JPH0924890A
公开(公告)日：1997-01-28
申请号：JP17766095
申请日：1995-07-13
Applicant: SUMITOMO METAL IND
Inventor： KISHIKAWA HIROSHI , YUKI HIDEAKI , KAMIMURA TAKAYUKI , AMAYA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To obtain stable corrosion preventing effect over a long period of time by forming a ballast tank of steel with a resin film of specified film thickness applied thereto, and making material, smaller in specific gravity than sea water and incompatible to sea water, float on the sea water surface in the ballast tank. SOLUTION: A ballast tank loaded with sea water by filling for the stable navigation of a ship such as a cargo ship is formed of steel with a resin film of 10-50μm in film thickness applied thereto in order to improve corrosion resistance, and material smaller in specific gravity than sea water, incompatible to sea water and in the form of liquid on the sea water surface is made float on the sea water surface in the ballast tank 1. It is desirable that substances in the form of solids on the sea water surface are made float in the material in the form of liquid on the sea water surface. Alkane, alcohol, fats and oils, or the like is used as the floating liquid 4 that covers the sea water surface, and resin, wood, or the like is used as the floating solids.
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