RU2647061C1 - Steel - Google Patents

Steel Download PDF

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Publication number
RU2647061C1
RU2647061C1 RU2017115028A RU2017115028A RU2647061C1 RU 2647061 C1 RU2647061 C1 RU 2647061C1 RU 2017115028 A RU2017115028 A RU 2017115028A RU 2017115028 A RU2017115028 A RU 2017115028A RU 2647061 C1 RU2647061 C1 RU 2647061C1
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Russia
Prior art keywords
steel
vanadium
molybdenum
nickel
boron
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RU2017115028A
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Russian (ru)
Inventor
Юлия Алексеевна Щепочкина
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Юлия Алексеевна Щепочкина
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

Abstract

FIELD: metallurgy.
SUBSTANCE: invention relates to ferrous metallurgy, in particular to composition of steels. Can be used for manufacture of thermal units component parts, furnaces, metallurgical equipment, crackers. Steel contains, mass%: carbon 0.4–0.5; silicon 0.3–0.35; manganese 0.4–0.6; chromium 3.0–3.5; molybdenum 0.1–0.15; vanadium 0.6–0.8; titanium 0.04–0.06; nickel 1.4–1.8; boron 0.015–0.017; aluminum 0.2–0.25; copper 0.7–1.1; hafnium 4.5–5.0; iron – the rest.
EFFECT: steel has high heat resistance.
1 cl, 1 tbl

Description

Изобретение относится к области черной металлургии, в частности, к составам сталей, используемых для изготовления деталей тепловых агрегатов, печей, металлургического оборудования, крекингоустановок.The invention relates to the field of ferrous metallurgy, in particular, to the compositions of steels used for the manufacture of parts of thermal units, furnaces, metallurgical equipment, cracking units.

Известна сталь, содержащая мас. %: углерод 0,32-0,54; кремний 0,3-0,75; марганец 0,15-0,6; хром 2,7-3,5; молибден 0,3-1,0; ванадий 0,5-0,8; титан 0,1-0,6; никель 0,35-0,8; бор 0,002-0,006; железо - остальное [1].Known steel containing wt. %: carbon 0.32-0.54; silicon 0.3-0.75; manganese 0.15-0.6; chrome 2.7-3.5; molybdenum 0.3-1.0; vanadium 0.5-0.8; titanium 0.1-0.6; nickel 0.35-0.8; boron 0.002-0.006; iron - the rest [1].

Задачей изобретения является повышение теплостойкости стали.The objective of the invention is to increase the heat resistance of steel.

Технический результат достигается тем, что сталь, включающая углерод, кремний, марганец, хром, молибден, ванадий, титан, никель, бор, железо, дополнительно содержит алюминий, медь и гафний, при следующем соотношении компонентов, мас. %: углерод 0,4-0,5; кремний 0,3-0,35; марганец 0,4-0,6; хром 3,0-3,5; молибден 0,1-0,15; ванадий 0,6-0,8; титан 0,04-0,06; никель 1,4-1,8; бор 0,015-0,017; алюминий 0,2-0,25; медь 0,7-1,1; гафний 4,5-5,0; железо - остальное.The technical result is achieved in that the steel, including carbon, silicon, manganese, chromium, molybdenum, vanadium, titanium, nickel, boron, iron, additionally contains aluminum, copper and hafnium, in the following ratio of components, wt. %: carbon 0.4-0.5; silicon 0.3-0.35; manganese 0.4-0.6; chrome 3.0-3.5; molybdenum 0.1-0.15; vanadium 0.6-0.8; titanium 0.04-0.06; nickel 1.4-1.8; boron 0.015-0.017; aluminum 0.2-0.25; copper 0.7-1.1; hafnium 4.5-5.0; iron is the rest.

В таблице приведены составы стали.The table shows the compositions of steel.

Figure 00000001
Figure 00000001

Figure 00000002
Figure 00000002

Ванадий и алюминий увеличивают вязкость сплава. Ванадий, гафний и молибден препятствуют возникновению и развитию трещин при термической нагрузке. Бор способствует равномерному прогреву и охлаждению стали. Хром препятствует росту окалины, тормозит снижение твердости и прочности стали при повышении температуры. Никель и титан улучшают металлическую основу стали. Алюминий раскисляет сплав.Vanadium and aluminum increase the viscosity of the alloy. Vanadium, hafnium and molybdenum prevent the occurrence and development of cracks under thermal stress. Boron promotes uniform heating and cooling of steel. Chrome inhibits the growth of scale, inhibits the decrease in hardness and strength of steel with increasing temperature. Nickel and titanium improve the metal base of steel. Aluminum deoxidizes the alloy.

Сталь может быть выплавлена в электропечах. Термическая обработка стали включает закалку при температуре 850-880°С и отпуск при температуре 220-225°С.Steel can be smelted in electric furnaces. Heat treatment of steel includes hardening at a temperature of 850-880 ° C and tempering at a temperature of 220-225 ° C.

Источник информацииThe source of information

1. SU 1062301, 1983.1. SU 1062301, 1983.

Claims (3)

Сталь, включающая углерод, кремний, марганец, хром, молибден, ванадий, титан, никель, бор и железо, отличающаяся тем, что она дополнительно содержит алюминий, медь и гафний при следующем соотношении компонентов, мас.%: Steel, including carbon, silicon, manganese, chromium, molybdenum, vanadium, titanium, nickel, boron and iron, characterized in that it additionally contains aluminum, copper and hafnium in the following ratio of components, wt.%: углеродcarbon 0,4-0,50.4-0.5 кремнийsilicon 0,3-0,350.3-0.35 марганецmanganese 0,4-0,60.4-0.6 хромchromium 3,0-3,5            3.0-3.5 молибденmolybdenum 0,1-0,150.1-0.15 ванадийvanadium 0,6-0,80.6-0.8 титанtitanium 0,04-0,06            0.04-0.06 никельnickel 1,4-1,8            1.4-1.8 борboron 0,015-0,017             0.015-0.017 алюминийaluminum 0,2-0,250.2-0.25 медьcopper 0,7-1,1             0.7-1.1 гафнийhafnium 4,5-5,04,5-5,0
железоiron остальноеrest
RU2017115028A 2017-04-27 2017-04-27 Steel RU2647061C1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1062301A1 (en) * 1982-04-15 1983-12-23 Предприятие П/Я А-1125 Steel
JPS634046A (en) * 1986-06-20 1988-01-09 Sumitomo Metal Ind Ltd High-tensile steel for oil well excellent in resistance to sulfide cracking
RU2321670C2 (en) * 2003-02-07 2008-04-10 ЭДВАНСТ СТИЛ ТЕКНОЛОДЖИ ЭлЭлСи Fine-grain martensite stainless steel and method for producing it
RU2559070C2 (en) * 2011-04-21 2015-08-10 Ниппон Стил Энд Сумитомо Метал Корпорейшн High-strength cold-rolled steel plate with excellent uniform relative elongation and ability for hole expansion and method of its production
US20170096719A1 (en) * 2014-03-18 2017-04-06 Innomaq 21, Sociedad Limitada Extremely high conductivity low cost steel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1062301A1 (en) * 1982-04-15 1983-12-23 Предприятие П/Я А-1125 Steel
JPS634046A (en) * 1986-06-20 1988-01-09 Sumitomo Metal Ind Ltd High-tensile steel for oil well excellent in resistance to sulfide cracking
RU2321670C2 (en) * 2003-02-07 2008-04-10 ЭДВАНСТ СТИЛ ТЕКНОЛОДЖИ ЭлЭлСи Fine-grain martensite stainless steel and method for producing it
RU2559070C2 (en) * 2011-04-21 2015-08-10 Ниппон Стил Энд Сумитомо Метал Корпорейшн High-strength cold-rolled steel plate with excellent uniform relative elongation and ability for hole expansion and method of its production
US20170096719A1 (en) * 2014-03-18 2017-04-06 Innomaq 21, Sociedad Limitada Extremely high conductivity low cost steel

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