RU2017121048A - DUPLEX STAINLESS STEEL FOR THE MANUFACTURE OF SHUT-OFF AND REGULATING FITTINGS - Google Patents

DUPLEX STAINLESS STEEL FOR THE MANUFACTURE OF SHUT-OFF AND REGULATING FITTINGS Download PDF

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Publication number
RU2017121048A
RU2017121048A RU2017121048A RU2017121048A RU2017121048A RU 2017121048 A RU2017121048 A RU 2017121048A RU 2017121048 A RU2017121048 A RU 2017121048A RU 2017121048 A RU2017121048 A RU 2017121048A RU 2017121048 A RU2017121048 A RU 2017121048A
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RU
Russia
Prior art keywords
stainless steel
duplex stainless
shut
manufacture
niobium
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RU2017121048A
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Russian (ru)
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RU2693718C2 (en
RU2017121048A3 (en
Inventor
Леонид Яковлевич Левков
Ксения Николаевна Уткина
Дмитрий Александрович Шурыгин
Алан Георгиевич Баликоев
Виктор Михайлович Ефимов
Дмитрий Александрович Калугин
Сергей Иванович Марков
Сергей Витальевич Орлов
Дмитрий Сергеевич Толстых
Original Assignee
Акционерное общество "Научно-производственное объединение "Центральный научно-исследовательский институт технологии машиностроения" АО "НПО "ЦНИИТМАШ"
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Priority to RU2017121048A priority Critical patent/RU2693718C2/en
Publication of RU2017121048A publication Critical patent/RU2017121048A/en
Publication of RU2017121048A3 publication Critical patent/RU2017121048A3/ru
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    • 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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Soft Magnetic Materials (AREA)
  • Contacts (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Claims (5)

1. Дуплексная нержавеющая сталь для производства запорной и регулирующей арматуры, содержащая углерод, кремний, марганец, хром, никель, молибден, азот, кобальт, медь, ниобий, церий и/или лантан и железо, отличающаяся тем, что дополнительно содержит серу, фосфор, алюминий, кальций и иттрий при следующих соотношениях компонентов, мас. %:1. Duplex stainless steel for the production of valves and control valves containing carbon, silicon, manganese, chromium, nickel, molybdenum, nitrogen, cobalt, copper, niobium, cerium and / or lanthanum and iron, characterized in that it additionally contains sulfur, phosphorus , aluminum, calcium and yttrium in the following ratios of components, wt. %: углеродcarbon 0,01-0,040.01-0.04 кремнийsilicon 0,3-0,50.3-0.5 марганецmanganese 0,9-1,20.9-1.2 хромchromium 22,5-24,022.5-24.0
никельnickel 5,8-7,05.8-7.0
молибденmolybdenum 3,5-4,83.5-4.8 азотnitrogen 0,16-0,250.16-0.25 медьcopper 3,0-3,33.0-3.3 ниобийniobium 0,27-0,370.27-0.37 церий и/или лантанcerium and / or lanthanum 0,001-0,0040.001-0.004 сераsulfur ≤0,004≤0.004 фосфорphosphorus ≤0,004≤0.004 алюминийaluminum 0,01-0,020.01-0.02 кальцийcalcium 0,001-0,0040.001-0.004 иттрийyttrium ≤0,005%≤0.005% железоiron остальноеrest
2. Дуплексная нержавеющая сталь по п. 1, отличающаяся тем, что структура дуплексной стали, полученная электрошлаковым переплавом, содержит 50-60 об. % феррита, а нитриды и карбонитриды ниобия имеют размеры ≤300 нм и располагаются внутри ферритных зерен.2. Duplex stainless steel according to claim 1, characterized in that the duplex steel structure obtained by electroslag remelting contains 50-60 vol. % ferrite, and niobium nitrides and carbonitrides are ≤300 nm in size and are located inside ferrite grains.
RU2017121048A 2017-06-16 2017-06-16 Duplex stainless steel for production of shutoff and control valves RU2693718C2 (en)

Priority Applications (1)

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RU2017121048A RU2693718C2 (en) 2017-06-16 2017-06-16 Duplex stainless steel for production of shutoff and control valves

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Application Number Priority Date Filing Date Title
RU2017121048A RU2693718C2 (en) 2017-06-16 2017-06-16 Duplex stainless steel for production of shutoff and control valves

Publications (3)

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RU2017121048A true RU2017121048A (en) 2018-12-18
RU2017121048A3 RU2017121048A3 (en) 2019-04-17
RU2693718C2 RU2693718C2 (en) 2019-07-04

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Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7705578L (en) * 1976-05-15 1977-11-16 Nippon Steel Corp TWO-PHASE STAINLESS STEEL
JPS54127823A (en) * 1978-03-29 1979-10-04 Nippon Steel Corp Two phase stainless steel
JP3446294B2 (en) * 1994-04-05 2003-09-16 住友金属工業株式会社 Duplex stainless steel
RU2184793C2 (en) * 2000-07-11 2002-07-10 Федеральное государственное унитарное предприятие Центральный научно-исследовательский институт конструкционных материалов "Прометей" Corrosion-resisting steel
KR100460346B1 (en) * 2002-03-25 2004-12-08 이인성 Super duplex stainless steel with a suppressed formation of intermetallic phases and having an excellent corrosion resistance, embrittlement resistance, castability and hot workability
EP1650320B1 (en) * 2003-06-10 2011-03-16 Sumitomo Metal Industries Limited Method for producing steel for hydrogen gas environment
EP1715073B1 (en) * 2004-01-29 2014-10-22 JFE Steel Corporation Austenitic-ferritic stainless steel
JP4915121B2 (en) * 2006-03-31 2012-04-11 住友金属工業株式会社 Manufacturing method of duplex stainless steel seamless pipe
JP5868206B2 (en) * 2011-03-09 2016-02-24 新日鐵住金ステンレス株式会社 Duplex stainless steel with excellent weld corrosion resistance
FI125854B (en) * 2011-11-04 2016-03-15 Outokumpu Oy Duplex stainless steel

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RU2693718C2 (en) 2019-07-04
RU2017121048A3 (en) 2019-04-17

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