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EP3031942A1 - Rostfreies Stahlband für Klappenventile - Google Patents

Rostfreies Stahlband für Klappenventile Download PDF

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Publication number
EP3031942A1
EP3031942A1 EP14196949.3A EP14196949A EP3031942A1 EP 3031942 A1 EP3031942 A1 EP 3031942A1 EP 14196949 A EP14196949 A EP 14196949A EP 3031942 A1 EP3031942 A1 EP 3031942A1
Authority
EP
European Patent Office
Prior art keywords
strip
steel
mpa
strip according
following requirements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14196949.3A
Other languages
English (en)
French (fr)
Other versions
EP3031942B1 (de
Inventor
Chris Millward
Azhar Nawaz
Alexander Löf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voestalpine Precision Strip AB
Original Assignee
Voestalpine Precision Strip AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=52015965&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3031942(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voestalpine Precision Strip AB filed Critical Voestalpine Precision Strip AB
Priority to EP14196949.3A priority Critical patent/EP3031942B1/de
Priority to ES14196949.3T priority patent/ES2643579T3/es
Priority to US15/102,217 priority patent/US9890436B2/en
Priority to JP2016535110A priority patent/JP6196381B2/ja
Priority to BR112016015645-5A priority patent/BR112016015645B1/pt
Priority to PCT/SE2015/051316 priority patent/WO2016093762A1/en
Priority to SG11201703857WA priority patent/SG11201703857WA/en
Priority to CN201580003829.XA priority patent/CN105934530B/zh
Priority to KR1020177018768A priority patent/KR102274408B1/ko
Publication of EP3031942A1 publication Critical patent/EP3031942A1/de
Publication of EP3031942B1 publication Critical patent/EP3031942B1/de
Application granted granted Critical
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/20—Isothermal quenching, e.g. bainitic hardening
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/06—Valve parameters
    • F04B2201/0603—Valve wear

Definitions

  • the invention relates to a stainless steel strip for flapper valves in compressors and other reed applications.
  • Flapper or reed valves are used in various types of applications where a specific type of compression cycle is regulated for a specific purpose. It can be a refrigeration cycle in a hermetic reciprocating compressor working uninterrupted in a refrigerator or in the air conditioner of a car.
  • a flapper valve is basically a spring made from a pre-hardened steel strip. In its simplest form, the flapper valve is tongue shaped, where one end is fixed and the opposite end hangs free and regulates the liquid or gas flow in the compressor.
  • the flapper valve suffers from both cyclic bending stresses and cyclic impact stresses during its service. Usually, these cyclic stresses eventually cause fatigue failure. Accordingly, the fatigue properties are of the utmost importance for the flapper valve material.
  • a flapper valve made of a steel strip of this invention has its fatigue properties optimized by a combined effect of modifications to the chemical composition of the steel, the non-metallic inclusions and the heat treatment.
  • Compressor OEMs require materials that have a higher fatigue life to improve the compressor's performance and life.
  • COP coefficient of performance
  • the existing steel grades used for reed valves are modified versions of a carbon steel AISI 1095 and a stainless steel AISI 420 produced via conventional melting, casting, rolling and heat treatment processes.
  • the industry demands and resulting performance requirements mean that future flapper reeds will increasingly need to be made out of very thin steel strip with an increased fatigue life expectancy and higher damping properties.
  • the general object of the present invention is to provide a pre-hardened stainless steel strip for flapper valves having an optimized property profile such that it can be used to produce more efficient and reliable compressors.
  • a further object is to provide pre-hardened stainless steel strip for flapper valves, which reduces the flapper reed contribution to the overall noise levels of the compressor.
  • Carbon is to be present in a minimum content of 0.3 %, preferably at least 0.32, 0.34, 0.36 or 0.36 %.
  • Carbon is a strong austenite stabilizer with relatively large solubility in austenite.
  • the upper limit for carbon is 0.5 % and may be set to 0.48, 0.46, 0.44 or 0.42 %.
  • a referred range is 0.35 - 0.41 %.
  • the amount of carbon should be controlled such that the amount of primary carbides of the type M 23 C 6 , M 7 C 3 and M 6 C in the steel is limited, preferably the steel is free from such primary carbides.
  • Si is used for deoxidation.
  • Si is a strong ferrite former and increases the carbon activity.
  • Si is also a powerful solid-solution strengthening element and strengthens the steel matrix. This effect appears at a content of 0.2 %Si. A preferred range is 0.30 - 0.60 %.
  • Manganese is an austenite stabilizer and contributes to improving the hardenability of the steel. Manganese shall therefore be present in a minimum content of 0.2 %, preferably at least 0.3, 0.35 or 0.4 %. When the content of Mn is too large the amount of retained austenite after finish annealing may be too high.
  • the steel shall therefore contain maximum 1.0 % Mn, preferably maximum 0.8, 0.7 or 0.65 %.
  • Chromium is a ferrite stabilizing element, which is added to impart corrosion resistance to the steel. Cr needs to be present in a content of at least 12.0 % in order to provide a passive film on the steel surface.
  • the lower limit may be 12,4, 12, 6, 12, 8 or 13 %. When the content of Cr exceeds 15 %, however, delta ferrite may form.
  • Mo is a ferrite stabilizer and is known to have a very favourable effect on the hardenability. Molybdenum is essential for attaining a good secondary hardening response. The minimum content is 0.5 % and may be set to 0.6, 0.7 or 0.8 %. Molybdenum is strong carbide forming element and also a strong ferrite former. The maximum content of molybdenum is therefore 2.0 %. Preferably Mo is limited to 1.5, 1.3 or 1.1 %.
  • Vanadium forms evenly distributed fine precipitated carbides, nitrides and carbonitrides of the type V(N,C) in the matrix of the steel.
  • This hard phase may also be denoted MX, wherein M is mainly V but other metals like Cr and Mo may be present to some extent.
  • X is one or both of C and N. Vanadium shall therefore be present in an amount of 0.01 - 0.2%.
  • the upper limit may be set to 0.1 or 0.08 %.
  • the lower limit may be 0.02, 0.03, 0.04 or 0.05%.
  • Nitrogen is a strong austenite former. N is restricted to 0.15% in order to obtain the desired type and amount of hard phases, in particular V(C,N). Higher nitrogen content may lead to work hardening, edge cracking and/or a high amount of retained austenite.
  • vanadium rich carbonitrides V(C,N) will form. These will be partly dissolved during the austenitizing step and then precipitated during the tempering step as particles of nanometre size.
  • the thermal stability of vanadium carbonitrides is considered to be better than that of vanadium carbides. Therefore the resistance against grain growth at high austenitizing temperatures is enhanced.
  • the lower limit may be 0.02, 0.03, 0.04 or 0.05 %.
  • the upper limit may be 0.12, 0.10, 0.08 or 0.06 %.
  • Nickel is an austenite former. Ni may be present in an amount of ⁇ 2.0 %. It gives the steel a good hardenability and toughness. However, because of the expense, the nickel content of the steel should be limited. The upper limit may therefore be set to 1.0, 0.5 or 0.5%. However, Ni is normally not deliberately added.
  • Cobalt is an austenite former. Co causes the solidus temperature to increase and therefore provides an opportunity to raises the hardening temperature. During austenitization it is therefore possible to dissolve larger fraction of carbides and thereby enhance the hardenability. Co also increases the M s temperature. However, large amount of Co may result in a decreased toughness and wear resistance. The maximum amount is 2 % and may be set to 0.5 %. However, for practical reasons, such as scrap handling, a deliberate addition of Co is normally not made.
  • Cu is an austenite stabilizing element but has a low solubility in ferrite. Cu may contribute to increasing the hardness and the corrosion resistance of the steel. However, it is not possible to extract copper from the steel once it has been added. This drastically makes the scrap handling more difficult. For this reason, the upper limit may be 1.0, 0.5, or 0.3 %. Copper is normally not deliberately added.
  • Aluminium may be used for deoxidation in combination with Si and Mn.
  • the lower limit is set to 0.001, 0.003, 0.005 or 0.007% in order to ensure a good deoxidation.
  • the upper limit is restricted to 0.06% for avoiding precipitation of undesired phases such as AlN and hard, brittle Alumina inclusions.
  • the upper limit may be 0.05, 0.04, 0.03, 0.02 or 0.015%.
  • molybdenum may be replaced by twice as much with tungsten because of their chemical similarities.
  • tungsten is expensive and it also complicates the handling of scrap metal.
  • the maximum amount is therefore limited to 2 %, preferably 0.5 % or 0.3 % and most preferably no deliberate additions are made.
  • Niobium is similar to vanadium in that it forms carbonitrides of the type M(N,C) and may in principle be used to replace part of the vanadium but that requires the double amount of niobium as compared to vanadium.
  • Nb results in a more angular shape of the M(N,C) and these are also much more stable than V(C,N) and may therefore not be dissolved during austenitising.
  • the maximum amount is therefore 0.05%, preferably 0.01 % and most preferably no deliberate additions are made.
  • These elements are carbide formers and may be present in the alloy in the claimed ranges for altering the composition of the hard phases. However, normally none of these elements are added.
  • B may be used in order to further increase the hardness of the steel.
  • the amount is limited to 0.01 %, preferably ⁇ 0.005 or even ⁇ 0.001 %.
  • P, S and O are the main impurities, which have a negative effect on the mechanical properties of the steel strip.
  • P may therefore be limited to 0.03%, preferably to 0.01%.
  • S may be limited to 0.03, 0.01, 0.008, 0.0005 or 0.0002%.
  • O may be limited to 0.003, 0.002 or 0.001%.
  • the present inventors have systematically investigated the effect of a modified chemical composition and a modified heat treatment on the mechanical properties of the flapper valve material.
  • the modifications made to the chemical composition relative to the conventional material were mainly focused on increases in nitrogen and vanadium although some benefits were also gained from increases in austenite levels and tighter control over such elements as carbon, manganese and phosphorus.
  • valve strip was undertaken using different furnace parameters to map the hardening response of material from the conventional and modified chemical compositions.
  • the production trials were carried out at a constant line speed with hardening temperatures in the range from 1000 °C to 1080°C, quenching into a molten lead alloy at a temperature in the range of 250°C to 350°C and tempering at temperatures in the range from 220°C to 600°C.
  • a stainless steel strip according to the invention is compared to a conventional stainless steel strip.
  • the composition of the investigated steels was as follows: Conventional Inventive C 0.38 0.40 Si 0.36 0.42 Mn 0.48 0.56 Cr 13.1 13.4 Mo 0.98 0.99 N 0.017 0.052 V 0.009 0.055 Ni 0.31 0.15 P 0.018 0.018 S 0.0004 0.0006
  • the cold rolled strips used for the hardening and tempering trials all had a thickness of 0.203 mm and a width of 140 mm.
  • the strips were subjected to hardening and tempering in the above mentioned continuous hardening furnace.
  • Tensile strength measurements were made according to ISO 6892:2009.
  • Fig. 1 discloses tensile properties as a function of the austenitising temperature.
  • Fig. 2 discloses the tensile properties as a function of the tempering temperature.
  • the inventive steel strip can be used for producing flapper valves for compressors having improved properties.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)
EP14196949.3A 2014-12-09 2014-12-09 Rostfreies Stahlband für Klappenventile Revoked EP3031942B1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP14196949.3A EP3031942B1 (de) 2014-12-09 2014-12-09 Rostfreies Stahlband für Klappenventile
ES14196949.3T ES2643579T3 (es) 2014-12-09 2014-12-09 Tira de acero inoxidable para válvulas de aleta
SG11201703857WA SG11201703857WA (en) 2014-12-09 2015-12-08 Stainless steel for flapper valves
JP2016535110A JP6196381B2 (ja) 2014-12-09 2015-12-08 フラッパ弁用ステンレス鋼帯
BR112016015645-5A BR112016015645B1 (pt) 2014-12-09 2015-12-08 Tira de aço inoxidável para válvulas de charneira
PCT/SE2015/051316 WO2016093762A1 (en) 2014-12-09 2015-12-08 Stainless steel for flapper valves
US15/102,217 US9890436B2 (en) 2014-12-09 2015-12-08 Stainless steel strip for flapper valves
CN201580003829.XA CN105934530B (zh) 2014-12-09 2015-12-08 用于舌形阀的不锈钢
KR1020177018768A KR102274408B1 (ko) 2014-12-09 2015-12-08 플래퍼 밸브들용 스테인레스강 스트립

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14196949.3A EP3031942B1 (de) 2014-12-09 2014-12-09 Rostfreies Stahlband für Klappenventile

Publications (2)

Publication Number Publication Date
EP3031942A1 true EP3031942A1 (de) 2016-06-15
EP3031942B1 EP3031942B1 (de) 2017-07-12

Family

ID=52015965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14196949.3A Revoked EP3031942B1 (de) 2014-12-09 2014-12-09 Rostfreies Stahlband für Klappenventile

Country Status (2)

Country Link
EP (1) EP3031942B1 (de)
ES (1) ES2643579T3 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107779778A (zh) * 2017-09-22 2018-03-09 钢铁研究总院 一种铁路钢轨扣件用不锈钢弹条材料
CN108380835A (zh) * 2018-04-17 2018-08-10 攀钢集团江油长城特殊钢有限公司 一种低偏析气阀钢连铸坯及其制造方法
CN109778079A (zh) * 2017-11-13 2019-05-21 路肯（上海）医疗科技有限公司 一种医疗器械用不锈钢、制作方法、热处理方法和应用
WO2020245285A1 (en) 2019-06-05 2020-12-10 Ab Sandvik Materials Technology A martensitic stainless alloy
EP3822380A4 (de) * 2018-07-11 2022-04-13 Hitachi Metals, Ltd. Streifen aus martensitischem edelstahl und verfahren zur herstellung davon
EP4265784A4 (de) * 2020-12-21 2024-09-25 POSCO Co., Ltd Martensitischer edelstahl mit verbesserter festigkeit und korrosionsbeständigkeit und herstellungsverfahren dafür
WO2025120177A1 (en) 2023-12-08 2025-06-12 Alleima Striptech Ab A martensitic steel, a steel strip and method for production thereof

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Publication number Priority date Publication date Assignee Title
JPH0533244A (ja) * 1991-07-19 1993-02-09 Kanai Hiroyuki 織機用リード材
JPH08144023A (ja) 1994-11-16 1996-06-04 Aichi Steel Works Ltd 強度、靱性、耐食性に優れた析出硬化型ステンレス鋼
JPH09256116A (ja) * 1996-03-19 1997-09-30 Nisshin Steel Co Ltd 抗菌性に優れた高強度マルテンサイト系ステンレス鋼
JPH1018001A (ja) * 1996-07-01 1998-01-20 Hitachi Metals Ltd 耐孔食性の優れた高硬度マルテンサイト系ステンレス鋼
JPH1018002A (ja) * 1996-07-01 1998-01-20 Hitachi Metals Ltd 耐孔食性の優れた高硬度マルテンサイト系ステンレス鋼
US5714114A (en) * 1995-01-13 1998-02-03 Hitachi Metals, Ltd. High hardness martensitic stainless steel with good pitting corrosion resistance
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JP2000129401A (ja) 1998-10-21 2000-05-09 Nisshin Steel Co Ltd 高いばね特性を有する高靱性調質圧延マルテンサイト系ステンレス鋼板およびその製造法
JP2002194504A (ja) 2000-12-21 2002-07-10 Sumitomo Metal Ind Ltd クロム系ステンレス鋼箔およびその製造方法
EP1739199A1 (de) * 2005-06-30 2007-01-03 OUTOKUMPU, Oyj Martensitischer rostfreier Stahl und Verfahren zu seiner Herstellung
JP2008133499A (ja) 2006-11-27 2008-06-12 Daido Steel Co Ltd 高硬度マルテンサイト系ステンレス鋼
JP2009203528A (ja) * 2008-02-28 2009-09-10 Nippon Steel & Sumikin Stainless Steel Corp 耐食性と耐磨耗性に優れる織機部材用マルテンサイト系ステンレス鋼とその鋼帯の製造方法
US20090301615A1 (en) * 2006-01-26 2009-12-10 Jacques Montagnon Method for producing an internal combustion engine valve and valve obtained in this manner
JP2010024486A (ja) 2008-07-17 2010-02-04 Daido Steel Co Ltd 高窒素マルテンサイト系ステンレス鋼
JP2011184780A (ja) 2010-03-10 2011-09-22 Nisshin Steel Co Ltd オーステナイト＋マルテンサイト複相組織ステンレス鋼板およびその製造方法
CN102337461A (zh) * 2010-07-23 2012-02-01 宝山钢铁股份有限公司 一种高硬度马氏体不锈钢及其制造方法

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0533244A (ja) * 1991-07-19 1993-02-09 Kanai Hiroyuki 織機用リード材
JPH08144023A (ja) 1994-11-16 1996-06-04 Aichi Steel Works Ltd 強度、靱性、耐食性に優れた析出硬化型ステンレス鋼
US5714114A (en) * 1995-01-13 1998-02-03 Hitachi Metals, Ltd. High hardness martensitic stainless steel with good pitting corrosion resistance
JPH09256116A (ja) * 1996-03-19 1997-09-30 Nisshin Steel Co Ltd 抗菌性に優れた高強度マルテンサイト系ステンレス鋼
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CN108380835B (zh) * 2018-04-17 2020-03-27 攀钢集团江油长城特殊钢有限公司 一种低偏析气阀钢连铸坯及其制造方法
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US11814697B2 (en) 2018-07-11 2023-11-14 Proterial, Ltd. Martensitic stainless steel strip and method for producing same
WO2020245285A1 (en) 2019-06-05 2020-12-10 Ab Sandvik Materials Technology A martensitic stainless alloy
CN113966405A (zh) * 2019-06-05 2022-01-21 山特维克材料技术公司 马氏体不锈钢合金
US12371766B2 (en) 2019-06-05 2025-07-29 Alleima Striptech Ab Martensitic stainless alloy
EP4265784A4 (de) * 2020-12-21 2024-09-25 POSCO Co., Ltd Martensitischer edelstahl mit verbesserter festigkeit und korrosionsbeständigkeit und herstellungsverfahren dafür
WO2025120177A1 (en) 2023-12-08 2025-06-12 Alleima Striptech Ab A martensitic steel, a steel strip and method for production thereof

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