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RU2009145115A - THIN CAST BAND WITH ADDITION OF MICROalloys AND METHOD FOR ITS MANUFACTURE - Google Patents

THIN CAST BAND WITH ADDITION OF MICROalloys AND METHOD FOR ITS MANUFACTURE Download PDF

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Publication number
RU2009145115A
RU2009145115A RU2009145115/02A RU2009145115A RU2009145115A RU 2009145115 A RU2009145115 A RU 2009145115A RU 2009145115/02 A RU2009145115/02 A RU 2009145115/02A RU 2009145115 A RU2009145115 A RU 2009145115A RU 2009145115 A RU2009145115 A RU 2009145115A
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steel product
less
product according
steel
rolled steel
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RU2009145115/02A
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Russian (ru)
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RU2471589C2 (en
Inventor
Джеймс Джеффри УИЛЛЬЯМС (AU)
Джеймс Джеффри УИЛЛЬЯМС
Харольд Роланд КАУЛ (AU)
Харольд Роланд КАУЛ
Дэниэл Джеффри ЭДЕЛЬМАН (US)
Дэниэл Джеффри ЭДЕЛЬМАН
Кристофер Рональд КИЛЛМОР (AU)
Кристофер Рональд КИЛЛМОР
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Ньюкор Корпорейшн (Us)
Ньюкор Корпорейшн
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Priority claimed from US11/744,881 external-priority patent/US20070212249A1/en
Application filed by Ньюкор Корпорейшн (Us), Ньюкор Корпорейшн filed Critical Ньюкор Корпорейшн (Us)
Publication of RU2009145115A publication Critical patent/RU2009145115A/en
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • 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
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C21D6/02—Hardening by precipitation
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Continuous Casting (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Metal Rolling (AREA)

Abstract

1. Рулонное стальное изделие, содержащее в расчете на массу менее 0,25% углерода, от 0,20 до 2,0% марганца, от 0,05 до 0,50% кремния, менее 0,01% алюминия и, по меньшей мере, один элемент, выбранный из группы, состоящей из приблизительно от 0,01% до 0,20% ниобия, приблизительно от 0,01% до 0,20% ванадия или их смеси, и содержащее более 70% ниобия и/или ванадия в твердом растворе в состоянии после смотки и охлаждения. ! 2. Рулонное стальное изделие по п.1, в котором содержание ниобия составляет менее 0,1%. ! 3. Рулонное стальное изделие по п.1, дополнительно содержащее мелкие частицы оксида кремния и железа, распределенные в микроструктуре стали и имеющие средний размер менее 50 нм. ! 4. Рулонное стальное изделие по п.1, в котором стальное изделие имеет предел текучести, равный, по меньшей мере, 340 МПа. ! 5. Рулонное стальное изделие по п.1, в котором стальное изделие имеет прочность на растяжение, равную, по меньшей мере, 410 МПа. ! 6. Рулонное стальное изделие по п.1, в котором стальное изделие имеет толщину менее 3,0 мм. ! 7. Рулонное стальное изделие по п.1, в котором стальное изделие имеет толщину менее 2,5 мм. ! 8. Рулонное стальное изделие по п.1, в котором стальное изделие имеет толщину менее 2,0 мм. ! 9. Рулонное стальное изделие по п.1, в котором стальное изделие имеет толщину в диапазоне приблизительно от 0,5 мм до 2 мм. !10. Рулонное стальное изделие по п.1, в котором стальное изделие имеет полное удлинение, составляющее по меньшей мере 6%. ! 11. Рулонное стальное изделие по п.1, в котором стальное изделие имеет полное удлинение, составляющее по меньшей мере 10%. ! 12. Стальное изделие, содержащее в расчете на массу менее 0,25% углерода, от 0,20 до 2,0% марганца, от 0,05 до 0,50% кремния, менее  1. A rolled steel product containing, based on the weight of less than 0.25% carbon, from 0.20 to 2.0% manganese, from 0.05 to 0.50% silicon, less than 0.01% aluminum and at least at least one element selected from the group consisting of from about 0.01% to 0.20% niobium, from about 0.01% to 0.20% vanadium, or a mixture thereof, and containing more than 70% niobium and / or vanadium in solid solution in a state after winding and cooling. ! 2. A rolled steel product according to claim 1, wherein the niobium content is less than 0.1%. ! 3. The rolled steel product according to claim 1, additionally containing small particles of silicon oxide and iron distributed in the microstructure of the steel and having an average size of less than 50 nm. ! 4. The rolled steel product according to claim 1, wherein the steel product has a yield strength of at least 340 MPa. ! 5. The rolled steel product according to claim 1, in which the steel product has a tensile strength equal to at least 410 MPa. ! 6. The rolled steel product according to claim 1, wherein the steel product has a thickness of less than 3.0 mm. ! 7. The rolled steel product according to claim 1, wherein the steel product has a thickness of less than 2.5 mm. ! 8. The rolled steel product according to claim 1, wherein the steel product has a thickness of less than 2.0 mm. ! 9. The rolled steel product according to claim 1, wherein the steel product has a thickness in the range of about 0.5 mm to 2 mm. !10. The rolled steel product according to claim 1, wherein the steel product has a total elongation of at least 6%. ! 11. The rolled steel product according to claim 1, wherein the steel product has a total elongation of at least 10%. ! 12. Steel product, based on the mass of less than 0.25% carbon, from 0.20 to 2.0% manganese, from 0.05 to 0.50% silicon, less

Claims (28)

1. Рулонное стальное изделие, содержащее в расчете на массу менее 0,25% углерода, от 0,20 до 2,0% марганца, от 0,05 до 0,50% кремния, менее 0,01% алюминия и, по меньшей мере, один элемент, выбранный из группы, состоящей из приблизительно от 0,01% до 0,20% ниобия, приблизительно от 0,01% до 0,20% ванадия или их смеси, и содержащее более 70% ниобия и/или ванадия в твердом растворе в состоянии после смотки и охлаждения.1. A rolled steel product containing, based on the weight of less than 0.25% carbon, from 0.20 to 2.0% manganese, from 0.05 to 0.50% silicon, less than 0.01% aluminum and at least at least one element selected from the group consisting of from about 0.01% to 0.20% niobium, from about 0.01% to 0.20% vanadium, or a mixture thereof, and containing more than 70% niobium and / or vanadium in solid solution after winding and cooling. 2. Рулонное стальное изделие по п.1, в котором содержание ниобия составляет менее 0,1%.2. A rolled steel product according to claim 1, wherein the niobium content is less than 0.1%. 3. Рулонное стальное изделие по п.1, дополнительно содержащее мелкие частицы оксида кремния и железа, распределенные в микроструктуре стали и имеющие средний размер менее 50 нм.3. The rolled steel product according to claim 1, additionally containing small particles of silicon oxide and iron distributed in the microstructure of the steel and having an average size of less than 50 nm. 4. Рулонное стальное изделие по п.1, в котором стальное изделие имеет предел текучести, равный, по меньшей мере, 340 МПа.4. A rolled steel product according to claim 1, wherein the steel product has a yield strength of at least 340 MPa. 5. Рулонное стальное изделие по п.1, в котором стальное изделие имеет прочность на растяжение, равную, по меньшей мере, 410 МПа.5. The rolled steel product according to claim 1, in which the steel product has a tensile strength equal to at least 410 MPa. 6. Рулонное стальное изделие по п.1, в котором стальное изделие имеет толщину менее 3,0 мм.6. The rolled steel product according to claim 1, wherein the steel product has a thickness of less than 3.0 mm. 7. Рулонное стальное изделие по п.1, в котором стальное изделие имеет толщину менее 2,5 мм.7. The rolled steel product according to claim 1, wherein the steel product has a thickness of less than 2.5 mm. 8. Рулонное стальное изделие по п.1, в котором стальное изделие имеет толщину менее 2,0 мм.8. The rolled steel product according to claim 1, wherein the steel product has a thickness of less than 2.0 mm. 9. Рулонное стальное изделие по п.1, в котором стальное изделие имеет толщину в диапазоне приблизительно от 0,5 мм до 2 мм.9. The rolled steel product according to claim 1, wherein the steel product has a thickness in the range of about 0.5 mm to 2 mm. 10. Рулонное стальное изделие по п.1, в котором стальное изделие имеет полное удлинение, составляющее по меньшей мере 6%.10. The rolled steel product according to claim 1, wherein the steel product has a total elongation of at least 6%. 11. Рулонное стальное изделие по п.1, в котором стальное изделие имеет полное удлинение, составляющее по меньшей мере 10%.11. The rolled steel product according to claim 1, wherein the steel product has a total elongation of at least 10%. 12. Стальное изделие, содержащее в расчете на массу менее 0,25% углерода, от 0,20 до 2,0% марганца, от 0,05 до 0,50% кремния, менее 0,01% алюминия и, по меньшей мере, один элемент, выбранный из группы, состоящей из приблизительно от 0,01% до 0,20% ниобия и приблизительно от 0,01% до 0,20% ванадия, большая часть микроструктуры которого состоит из бейнита и игольчатого феррита и которое содержит мелкие частицы оксида кремния и железа, распределенные в микроструктуре стали и имеющие средний размер менее 50 нм.12. Steel product containing, based on the weight of less than 0.25% carbon, from 0.20 to 2.0% manganese, from 0.05 to 0.50% silicon, less than 0.01% aluminum and at least , one element selected from the group consisting of from about 0.01% to 0.20% niobium and from about 0.01% to 0.20% vanadium, most of the microstructure of which consists of bainite and acicular ferrite and which contains small particles of silicon oxide and iron distributed in the microstructure of steel and having an average size of less than 50 nm. 13. Стальное изделие по п.12, в котором содержание ниобия составляет менее 0,1%.13. The steel product according to item 12, in which the niobium content is less than 0.1%. 14. Стальное изделие по п.12, в котором стальное изделие имеет предел текучести, равный, по меньшей мере, 340 МПа.14. The steel product according to item 12, in which the steel product has a yield strength equal to at least 340 MPa. 15. Стальное изделие по п.12, в котором стальное изделие имеет прочность на растяжение, равную, по меньшей мере, 410 МПа.15. The steel product according to item 12, in which the steel product has a tensile strength equal to at least 410 MPa. 16. Стальное изделие по п.12, в котором стальное изделие имеет полное удлинение, составляющее, по меньшей мере, 6%.16. The steel product according to item 12, in which the steel product has a total elongation of at least 6%. 17. Стальное изделие по п.12, в котором стальное изделие имеет полное удлинение, составляющее, по меньшей мере, 10%.17. The steel product according to item 12, in which the steel product has a total elongation of at least 10%. 18. Стальное изделие, содержащее в расчете на массу менее 0,25% углерода, от 0,20 до 2,0% марганца, от 0,05 до 0,50% кремния, менее 0,01% алюминия и, по меньшей мере, один элемент, выбранный из группы, состоящей из приблизительно от 0,01% до 0,20% ниобия, приблизительно от 0,05% до 0,50% молибдена и приблизительно от 0,01% до 0,20% ванадия, большая часть микроструктуры которого состоит из бейнита и игольчатого феррита и которое содержит мелкие частицы оксида кремния и железа, распределенные в микроструктуре стали и имеющие средний размер менее 50 нанометров.18. A steel product containing, based on a weight of less than 0.25% carbon, from 0.20 to 2.0% manganese, from 0.05 to 0.50% silicon, less than 0.01% aluminum and at least , one element selected from the group consisting of from about 0.01% to 0.20% niobium, from about 0.05% to 0.50% molybdenum, and from about 0.01% to 0.20% vanadium, large part of the microstructure of which consists of bainite and acicular ferrite and which contains small particles of silicon oxide and iron distributed in the microstructure of steel and having an average size of less than 50 nanometers. 19. Стальное изделие по п.18, в котором содержание ниобия составляет менее 0,1%.19. The steel product according to claim 18, wherein the niobium content is less than 0.1%. 20. Стальное изделие по п.18, в котором стальное изделие имеет предел текучести, равный, по меньшей мере, 340 МПа.20. The steel product according to claim 18, wherein the steel product has a yield strength of at least 340 MPa. 21. Стальное изделие по п.18, в котором стальное изделие имеет прочность на растяжение, равную, по меньшей мере, 410 МПа.21. The steel product according to p, in which the steel product has a tensile strength equal to at least 410 MPa. 22. Стальное изделие по п.18, в котором стальное изделие имеет полное удлинение, составляющее, по меньшей мере, 6%.22. The steel product according to claim 18, wherein the steel product has a total elongation of at least 6%. 23. Стальное изделие по п.18, в котором стальное изделие имеет полное удлинение, составляющее, по меньшей мере, 10%.23. The steel product according to claim 18, wherein the steel product has a total elongation of at least 10%. 24. Способ получения смотанной в рулон тонкой литой стальной полосы, включающий следующие стадии:24. A method of obtaining a coiled thin cast steel strip, comprising the following stages: сборка охлаждаемой изнутри литейной машины, снабженной расположенными латерально литейными валками, образующими зазор между ними, и формирование литейной ванны из расплавленной стали, удерживаемой на литейных валках над зазором и ограниченную на краях литейных валков боковыми перемычками,assembly of an inside-cooled casting machine equipped with laterally casting rolls forming a gap between them, and forming a casting bath of molten steel held on the casting rolls above the gap and limited to side jumpers at the edges of the casting rolls, вращение в разные стороны литейных валков для отверждения металлических оболочек на литейных валках по мере продвижения литейных валков через литейную ванну, иrotation in different directions of the casting rolls for curing the metal shells on the casting rolls as the casting rolls move through the casting bath, and формирование стальной полосы из металлических оболочек по направлению вниз в зазоре между литейными валками, иforming a steel strip of metal shells in the downward direction in the gap between the casting rolls, and охлаждение стальной полосы со скоростью, по меньшей мере, 10°С в секунду для получения изделия, содержащего, в расчете на массу, менее 0,25% углерода, от 0,20 до 2,0% марганца, от 0,05 до 0,50% кремния, менее 0,01% алюминия, и, по меньшей мере, один элемент, выбранный из группы, состоящей из приблизительно от 0,01% до 0,20% ниобия, приблизительно от 0,01% до 0,20% ванадия и их смеси, большая часть микроструктуры которого состоит из бейнита и игольчатого феррита, и содержащего более 70% ниобия и/или ванадия в твердом растворе.cooling the steel strip at a rate of at least 10 ° C per second to obtain an article containing, based on the weight, less than 0.25% carbon, from 0.20 to 2.0% manganese, from 0.05 to 0 , 50% silicon, less than 0.01% aluminum, and at least one element selected from the group consisting of from about 0.01% to 0.20% niobium, from about 0.01% to 0.20 % vanadium and mixtures thereof, most of the microstructure of which consists of bainite and acicular ferrite, and containing more than 70% niobium and / or vanadium in solid solution. 25. Способ по п.24, в котором стальная полоса в состоянии после смотки содержит мелкие частицы оксида кремния и железа, распределенные в микроструктуре стали и имеющие средний размер менее 50 нм.25. The method according to paragraph 24, in which the steel strip in the state after winding contains small particles of silicon oxide and iron distributed in the microstructure of steel and having an average size of less than 50 nm. 26. Способ по п.24, дополнительно включающий следующие стадии:26. The method according to paragraph 24, further comprising the following stages: горячая прокатка стальной полосы;hot rolling of a steel strip; смотка горячекатаной стальной полосы при температуре, составляющей приблизительно от 450 до 700°С.winding a hot-rolled steel strip at a temperature of approximately 450 to 700 ° C. 27. Способ по п.24, дополнительно включающий следующие стадии:27. The method according to paragraph 24, further comprising the following stages: горячая прокатка стальной полосы;hot rolling of a steel strip; смотка горячекатаной стальной полосы при температуре, составляющей менее 600°С.winding a hot-rolled steel strip at a temperature of less than 600 ° C. 28. Способ по п.24, дополнительно включающий стадию упрочнения при старении стальной полосы для повышения прочности на растяжение при температуре, составляющей, по меньшей мере, 550°С. 28. The method according to paragraph 24, further comprising the stage of hardening during aging of the steel strip to increase tensile strength at a temperature of at least 550 ° C.
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