RU2198236C2 - Cold-resistant steel - Google Patents
Cold-resistant steel Download PDFInfo
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- RU2198236C2 RU2198236C2 RU2000120077/02A RU2000120077A RU2198236C2 RU 2198236 C2 RU2198236 C2 RU 2198236C2 RU 2000120077/02 A RU2000120077/02 A RU 2000120077/02A RU 2000120077 A RU2000120077 A RU 2000120077A RU 2198236 C2 RU2198236 C2 RU 2198236C2
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- Prior art keywords
- steel
- niobium
- molybdenum
- vanadium
- carbon
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 20
- 239000010959 steel Substances 0.000 title claims abstract description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 239000010955 niobium Substances 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 9
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 9
- 239000011733 molybdenum Substances 0.000 claims abstract description 9
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 9
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 8
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 8
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 239000011651 chromium Substances 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 5
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000011572 manganese Substances 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009847 ladle furnace Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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Abstract
Description
Изобретение относится к металлургии, в частности к производству хладостойких и жаропрочных сталей, и может быть использовано в энергомашиностроении для производства дисков и роторов газовых и паровых турбин. The invention relates to metallurgy, in particular to the production of cold-resistant and heat-resistant steels, and can be used in power engineering for the production of disks and rotors of gas and steam turbines.
Известна сталь, описанная в патенте Российской Федерации RU 2077602 С1, (опубликованном 20.04.1997), которая эксплуатируется при температурах от -70 до 300oС. Сталь содержит компоненты в следующем соотношении, мас.%:
Углерод - 0,04-0,09
Хром - 12,5-15,0
Никель - 4,0-6,5
Марганец - 0,1-1,0
Молибден - 2,5-3,53
Азот - 0,02-0,1
Кремний - 0,3-1,6
Ниобий - 0,02-0,4
Кобальт - 3,5-6,0
Церий - 0,001-0,05
Кальций - 0,001-0,05
Железо - Остальное
при этом выполняется соотношение:
Уровень хладостойкости известной стали недостаточно высокий.Known steel, described in the patent of the Russian Federation RU 2077602 C1 (published on 04/20/1997), which is operated at temperatures from -70 to 300 o C. Steel contains components in the following ratio, wt.%:
Carbon - 0.04-0.09
Chrome - 12.5-15.0
Nickel - 4.0-6.5
Manganese - 0.1-1.0
Molybdenum - 2.5-3.53
Nitrogen - 0.02-0.1
Silicon - 0.3-1.6
Niobium - 0.02-0.4
Cobalt - 3.5-6.0
Cerium - 0.001-0.05
Calcium - 0.001-0.05
Iron - Else
this satisfies the ratio:
The cold resistance level of known steel is not high enough.
Изобретение направлено на решение задачи повышения хладостойкости путем повышения ударной вязкости разрушения при температуре от -60 до 20oС, а также на повышение кратковременной, длительной и циклической прочности стали.The invention is aimed at solving the problem of increasing cold resistance by increasing the fracture toughness at a temperature of from -60 to 20 o C, as well as to increase the short-term, long-term and cyclic strength of steel.
Для решения поставленной задачи предложенная хладостойкая сталь, содержащая углерод, хром, молибден, никель, кремний, марганец, ниобий и железо, дополнительно содержит ванадий при следующем соотношении компонентов, мас.%:
Углерод - 0,08-0,13
Хром - 11,0-13,0
Молибден - 1,5-1,75
Никель - 2,0-3,1
Ванадий - 0,2-0,35
Кремний - 0,3-0,1
Марганец - 0,05-0,1
Ниобий - 0,01-0,02
Церий - До 0,5
Железо - Остальное
при выполнении следующего соотношения:
(хром + молибден + ниобий + ванадий) - (1,5 никель + 30 углерод) = 4,2÷6,7.To solve this problem, the proposed cold-resistant steel containing carbon, chromium, molybdenum, nickel, silicon, manganese, niobium and iron, additionally contains vanadium in the following ratio of components, wt.%:
Carbon - 0.08-0.13
Chrome - 11.0-13.0
Molybdenum - 1.5-1.75
Nickel - 2.0-3.1
Vanadium - 0.2-0.35
Silicon - 0.3-0.1
Manganese - 0.05-0.1
Niobium - 0.01-0.02
Cerium - Up to 0.5
Iron - Else
when performing the following ratio:
(chromium + molybdenum + niobium + vanadium) - (1.5 nickel + 30 carbon) = 4.2 ÷ 6.7.
Оптимальное содержание Si не превышает 0,05-0,07%. Содержание Si≅10[0] является технологически необходимым для связывания примесей О и S в округлые неметаллические включения в процессе кристаллизации стали. The optimum Si content does not exceed 0.05-0.07%. The Si≅10 [0] content is technologically necessary for the binding of O and S impurities to rounded nonmetallic inclusions during the crystallization of steel.
Желаемое содержание Мл <0,05-0,10%, причем содержание Mn≅15[S] является технологически необходимым для связывания О и S в oкpyглые неметаллические включения в процессе кристаллизации стали. Церий вводится в случае выплавки в открытых агрегатах с целью регулирования распределения включений и связывания водорода. The desired content of Ml is <0.05-0.10%, and the content of Mn ]15 [S] is technologically necessary for the binding of O and S into circular non-metallic inclusions during the crystallization of steel. Cerium is introduced in the case of smelting in open aggregates in order to control the distribution of inclusions and the binding of hydrogen.
Содержание S, О, Р не должно превышать 0,005% каждого, во избежание образования большего количества включений и накопления поверхностно-активных элементов на границах литого и границ аустенитного рекристаллизованного зерна. The content of S, O, P should not exceed 0.005% of each, in order to avoid the formation of more inclusions and the accumulation of surface-active elements at the boundaries of cast and the boundaries of austenitic recrystallized grains.
Содержание остаточного алюминия не должно превышать 0,02%, чтобы обеспечить оптимальный состав оксидных включений. The residual aluminum content should not exceed 0.02% in order to ensure the optimal composition of oxide inclusions.
Содержание Nb зависит от условий эксплуатации ротора или диска. При эксплуатации при температурах ниже 350oС и запуске из холодного состояния содержание не должно превышать 0,02%.The Nb content depends on the operating conditions of the rotor or disk. When operating at temperatures below 350 o C and starting from a cold state, the content should not exceed 0.02%.
Химический состав стали двух плавок (базовой и опытной) приведен в табл. 1. The chemical composition of the steel of two heats (base and experimental) is given in table. 1.
Сопоставление результатов показывает, что предложенная сталь обладает существенно лучшим сочетанием свойств, особенно при отрицательных температурах (температура охрупчивания ниже, чем у известной стали, и при температурах эксплуатации предел длительной прочности выше). A comparison of the results shows that the proposed steel has a significantly better combination of properties, especially at negative temperatures (the embrittlement temperature is lower than that of the known steel, and the long-term strength is higher at operating temperatures).
Использование предлагаемой стали существенно повышает изотропность свойств, надежность эксплуатации энергомашин их долговечность. Кроме того, предлагаемая сталь может быть выплавлена не только методами ЭШП и ВДП, но и в установках типа печь-ковш, т. к. ее структура определяется не столько условиями кристаллизации, сколько составом металла. The use of the proposed steel significantly increases the isotropy of the properties, the reliability of the operation of energy machines, their durability. In addition, the proposed steel can be smelted not only by ESR and VDP, but also in plants of the ladle-furnace type, because its structure is determined not so much by crystallization conditions as by the composition of the metal.
Механические свойства стали (после термообработки по режиму 1050oC, отпуск - 550 - 570oC) представлены в табл. 2.The mechanical properties of steel (after heat treatment according to the regime of 1050 o C, tempering - 550 - 570 o C) are presented in table. 2.
В табл. 3 представлены данные по коэффициентам анизотропии (соотношение свойств вдоль и поперек волокна) для промышленных дисков из предлагаемой стали. In the table. 3 presents data on the anisotropy coefficients (the ratio of properties along and across the fiber) for industrial disks of the proposed steel.
Claims (1)
Углерод - 0,08-0,13
Хром - 11,0-13,0
Молибден - 1,5-1,75
Никель - 2,0-3,1
Ванадий - 0,2-0,35
Кремний - 0,03-0,1
Марганец - 0,05-0,1
Ниобий - 0,01-0,02
Церий - До 0,5
Железо - Остальное
при выполнении следующего соотношения: (хром+молибден+ниобий+ванадий)-(1,5никель+30углерод)=4,2÷6,7.Cold-resistant steel containing carbon, chromium, molybdenum, nickel, silicon, manganese, niobium and iron, characterized in that it additionally contains vanadium in the following ratio of components, wt.%:
Carbon - 0.08-0.13
Chrome - 11.0-13.0
Molybdenum - 1.5-1.75
Nickel - 2.0-3.1
Vanadium - 0.2-0.35
Silicon - 0.03-0.1
Manganese - 0.05-0.1
Niobium - 0.01-0.02
Cerium - Up to 0.5
Iron - Else
when the following ratio is satisfied: (chromium + molybdenum + niobium + vanadium) - (1.5nickel + 30 carbon) = 4.2 ÷ 6.7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2000120077/02A RU2198236C2 (en) | 2000-07-27 | 2000-07-27 | Cold-resistant steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2000120077/02A RU2198236C2 (en) | 2000-07-27 | 2000-07-27 | Cold-resistant steel |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2002110727/02A Division RU2237102C2 (en) | 2002-04-22 | 2002-04-22 | Fire-resistant steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2000120077A RU2000120077A (en) | 2002-05-20 |
| RU2198236C2 true RU2198236C2 (en) | 2003-02-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2000120077/02A RU2198236C2 (en) | 2000-07-27 | 2000-07-27 | Cold-resistant steel |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2198236C2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD2816C2 (en) * | 2001-06-21 | 2006-02-28 | Владислав ФАТЕЕВ | Welding on material |
| MD2819C2 (en) * | 2001-06-26 | 2006-03-31 | Илие ЦУРКАН | Electrode material |
| RU2328547C2 (en) * | 2006-07-20 | 2008-07-10 | Общество с ограниченной ответственностью "ОМЗ-Спецсталь" | High chromium steel for steam turbine rotors |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU973662A1 (en) * | 1981-05-27 | 1982-11-15 | Институт проблем литья АН УССР | Casting steel |
| US4465525A (en) * | 1980-03-01 | 1984-08-14 | Nippon Steel Corporation | Ferritic stainless steel having excellent formability |
| US4969963A (en) * | 1988-06-30 | 1990-11-13 | Aichi Steel Works, Ltd. | Soft magnetic stainless steel having good cold forgeability |
| US5190722A (en) * | 1990-12-28 | 1993-03-02 | Tohoku Special Steel Works Limited | High cold-forging electromagnetic stainless steel |
| RU2009262C1 (en) * | 1992-09-24 | 1994-03-15 | Скворцов Александр Иванович | Steel |
| RU2016127C1 (en) * | 1991-06-22 | 1994-07-15 | Эфрон Леонид Иосифович | Steel |
-
2000
- 2000-07-27 RU RU2000120077/02A patent/RU2198236C2/en active IP Right Revival
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4465525A (en) * | 1980-03-01 | 1984-08-14 | Nippon Steel Corporation | Ferritic stainless steel having excellent formability |
| SU973662A1 (en) * | 1981-05-27 | 1982-11-15 | Институт проблем литья АН УССР | Casting steel |
| US4969963A (en) * | 1988-06-30 | 1990-11-13 | Aichi Steel Works, Ltd. | Soft magnetic stainless steel having good cold forgeability |
| US5190722A (en) * | 1990-12-28 | 1993-03-02 | Tohoku Special Steel Works Limited | High cold-forging electromagnetic stainless steel |
| RU2016127C1 (en) * | 1991-06-22 | 1994-07-15 | Эфрон Леонид Иосифович | Steel |
| RU2009262C1 (en) * | 1992-09-24 | 1994-03-15 | Скворцов Александр Иванович | Steel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD2816C2 (en) * | 2001-06-21 | 2006-02-28 | Владислав ФАТЕЕВ | Welding on material |
| MD2819C2 (en) * | 2001-06-26 | 2006-03-31 | Илие ЦУРКАН | Electrode material |
| RU2328547C2 (en) * | 2006-07-20 | 2008-07-10 | Общество с ограниченной ответственностью "ОМЗ-Спецсталь" | High chromium steel for steam turbine rotors |
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