SU148085A1 - - Google Patents
Info
- Publication number
- SU148085A1 SU148085A1 SU738021A SU738021A SU148085A1 SU 148085 A1 SU148085 A1 SU 148085A1 SU 738021 A SU738021 A SU 738021A SU 738021 A SU738021 A SU 738021A SU 148085 A1 SU148085 A1 SU 148085A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- steel
- chromium
- nickel
- heat
- niobium
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000005266 casting Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- -1 nickel-chromium Chemical compound 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
Description
Известны жаропрочные стали дл изготовлени литых и сварнолитых узлов энергооборудовани , работающего длительное врем при температуре 650°С. Эти стали содержат углерод, кремний, марганец, хром, никель и ниобий.Heat-resistant steels are known for the manufacture of cast and welded-cast power equipment assemblies operating for a long time at 650 ° C. These steels contain carbon, silicon, manganese, chromium, nickel and niobium.
Предлагаема хромоникелева сталь отличаетс от известных сталей подобного типа изменением процентного состава вход щих в нее компонентов, а также дополнительным введением в ее состав вольфрама . Сталь содержит также ограниченное (2-4о/о), регулируемое ри выплавке исходное количество ферритной фазы. Это позвол ет повысить жаропрочность стали при одновременной высокой технологичности при отливке и сварке.The proposed nickel-chromium steel differs from the known steels of this type by a change in the percentage composition of the components included in it, as well as the additional introduction of tungsten into its composition. The steel also contains a limited (2-4 o / o), adjustable during smelting, the initial amount of the ferritic phase. This makes it possible to increase the heat resistance of steel with simultaneous high processability during casting and welding.
Химический состав стали (о/о):The chemical composition of the steel (o / o):
углерод0 08-0,12carbon0 08-0.12
кремний0 4 -0,6silicon0 4 -0.6
марганец1,0 -1.5manganese1.0 -1.5
хром15,0-16,5Chrome15.0-16.5
никель8,5 -10,0nickel8.5 -10.0
вольфрам3,0 -40tungsten3.0 -40
пиобий не более . 1,2no more piobias. 1.2
серане более , 0,025more than 0,025
фосфор не более , 0,03phosphorus not more than 0.03
Описываема сталь, условно названна ЦЖ-15, при отливке и сварке характеризуетс малой чувствительностью к образованию гор чих и холодных трещин в отливках и околошовных зонах сварных соединений .The described steel, conventionally named CZH-15, during casting and welding, is characterized by low sensitivity to the formation of hot and cold cracks in the castings and heat-affected weld zones.
№ 148085- 2 -No. 148085-2 -
Механические свойства стали после аустенизации при и отпуска при 900°С в течение 5 час следующие:The mechanical properties of the steel after austenitization at and tempering at 900 ° C for 5 hours are as follows:
предел текучести, K2/jVut 21-27 1) -15yield strength, K2 / jVut 21-27 1) -15
предел прочности, кг/лиг 45-60 23-33tensile strength, kg / lig 45-60 23-33
относительное удлинение, о/о23-55 22-34relative elongation, о / о23-55 22-34
относительное сужение, /о32-56 40-64relative narrowing, / о32-56 40-64
ударна в зкость, кгм/см 6-10 7-15 ударна в зкость после старени приimpact viscosity, kgm / cm 6–10 7–15 impact strength after aging at
700°С, кгм/см700 ° С, kgm / cm
1000 час3-7 . -1000 hours 3-7. -
3000 час3-4 - предел длительной прочности при 650°С,3000 h3-4 - the limit of long-term strength at 650 ° C,
кг/ммkg / mm
10000 час- 1310,000 hours- 13
100000 час - 10100,000 hour - 10
Сталь ЦЖ-15 имеет достаточно высокие кратковременные механические свойства, сравнительно низкую чувствительность к охрупчиванию в процессе термического старени и высокую жаропрочность. Из описываемой стали были изготовлены жесткие сварнолитые корпуса задвижек ДУ-125 с толщиной стенок 90 мм. Дефекты в основном металле отливок и в сварных соединени х полностью отсутствовали. Сталь ЦЖ-15 может найти применение при изготовлении литых и сварнолитых узлов и деталей паротурбинных и газотурбинных установок, работающих при температуре 650°С.Steel ЦЖ-15 has rather high short-term mechanical properties, relatively low sensitivity to embrittlement during thermal aging and high heat resistance. Rigid welded-casings of DU-125 valves with wall thickness of 90 mm were made of the described steel. Defects in the base metal of castings and in welded joints were completely absent. Steel TSZh-15 can be used in the manufacture of cast and svarnolity casting units and parts of steam turbine and gas turbine plants operating at a temperature of 650 ° C.
Предмет изобретени Subject invention
Жаропрочна сталь, содержаща углерод, кремний, марганец, хром, никель, ниобий, отличающа с тем, что, с целью повышени жаропрочности и технологичности при отливке и сварке, она содержит (о/о): углерод 0,08-0,12; кремний 0,4-0,6; марганец 1,0-1,5; хром 15,0-16,5; никель 8,5-10,0; вольфрам 3,0-4,0; ниобий не более 1,2; сера не бо лее 0,025; фосфор не более 0,03 и ограниченное (2-4о/о), регулируемое при выплавке исходное количество ферритной фазы.Heat-resistant steel containing carbon, silicon, manganese, chromium, nickel, niobium, characterized in that, in order to increase the heat resistance and processability during casting and welding, it contains (o / o): carbon 0.08-0.12; silicon 0.4-0.6; manganese 1.0-1.5; chromium 15.0-16.5; nickel 8.5-10.0; tungsten 3.0-4.0; niobium not more than 1.2; sulfur is not more than 0.025; phosphorus is not more than 0.03 and limited (2-4о / о), the initial amount of the ferritic phase is adjustable during smelting.
при 20°С при 650°Сat 20 ° C at 650 ° C
Publications (1)
Publication Number | Publication Date |
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SU148085A1 true SU148085A1 (en) |
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