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RU2008109221A - METHOD AND DEVICE FOR CREATING SPECIFIC COMBINATIONS OF MULTI-PHASE STEEL PROPERTIES - Google Patents

METHOD AND DEVICE FOR CREATING SPECIFIC COMBINATIONS OF MULTI-PHASE STEEL PROPERTIES Download PDF

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Publication number
RU2008109221A
RU2008109221A RU2008109221/02A RU2008109221A RU2008109221A RU 2008109221 A RU2008109221 A RU 2008109221A RU 2008109221/02 A RU2008109221/02 A RU 2008109221/02A RU 2008109221 A RU2008109221 A RU 2008109221A RU 2008109221 A RU2008109221 A RU 2008109221A
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annealing
line
steel
duration
martensite
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RU2008109221/02A
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Russian (ru)
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RU2379359C2 (en
Inventor
Вольфганг ХЕННИНГ (DE)
Вольфганг ХЕННИНГ
Кристиан БИЛЬГЕН (DE)
Кристиан БИЛЬГЕН
Инго ШУСТЕР (DE)
Инго ШУСТЕР
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Смс Демаг Аг (De)
Смс Демаг Аг
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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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • 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
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
    • 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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • 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
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
    • C21D8/0463—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment following hot rolling
    • 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
    • C21D2211/002—Bainite
    • 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
    • C21D2211/008—Martensite

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Coating With Molten Metal (AREA)
  • Metal Rolling (AREA)

Abstract

1. Способ обеспечения определенной комбинации свойств у горячекатаной многофазной стали, многофазная структура которой содержит минимум 30% феррита и максимум 50% мартенсита, в частности, у двухфазной стали и стали с TRIP-эффектом, получаемой в обычной линии для горячей прокатки, в линии литья и прокатки тонких слябов или в соответствующих линиях узко- и среднеполосовых станов, или в линии проволочного стана со стандартным составом и условиями проведения процесса, отличающийся тем, что после охлаждения, следующего за горячей прокаткой (10) или другой технологической операцией, например, изготовления деталей посредством последующего или промежуточного отжига (30, 35) с переменными температурой и продолжительностью, приобретает желательную комбинацию прочности и отношения предела текучести к пределу прочности у многофазной стали. ! 2. Способ по п.1, отличающийся тем, что отжиг (30, 35) производят таким образом, что полученная структура состоит из основной ферритной матрицы, а также из отпущенного мартенсита или бейнита с долей поверхности порядка 10-50%, причем посредством температуры отжига устанавливают величину предела текучести, обеспечивая мелкодисперсное распределение выделений карбидов на границах зерен мартенсита или бейнита, а уровень предела прочности устанавливают посредством продолжительности отжига. ! 3. Способ по п.1 или 2, отличающийся тем, что отжиг (30, 35) проводят при температуре, менее или равной 600°С, и продолжительности, менее или равной 120 с. ! 4. Способ по п.1 или 2, отличающийся тем, что отжиг (30, 35) проводится в устройстве непрерывного действия в автономном режиме «off-line». ! 5. Способ по п.1 или 2, отличающийся те�1. A method for ensuring a certain combination of properties in hot-rolled multi-phase steel, the multi-phase structure of which contains a minimum of 30% ferrite and a maximum of 50% martensite, in particular, dual-phase steel and TRIP-effect steel produced in a conventional hot rolling line, in a casting line and rolling of thin slabs either in the corresponding lines of narrow and medium strip mills, or in a wire mill line with standard composition and process conditions, characterized in that after cooling following hot rolling (10) or other technological operation, for example, the manufacture of parts through subsequent or intermediate annealing (30, 35) with variable temperature and duration, acquires the desired combination of strength and yield-to-tensile strength ratio of the multiphase steel. ! 2. Method according to claim 1, characterized in that the annealing (30, 35) is carried out in such a way that the resulting structure consists of a main ferrite matrix, as well as tempered martensite or bainite with a surface fraction of the order of 10-50%, and by means of temperature annealing sets the value of the yield strength, ensuring a finely dispersed distribution of carbide precipitates at the grain boundaries of martensite or bainite, and the level of tensile strength is set through the duration of annealing. ! 3. Method according to claim 1 or 2, characterized in that annealing (30, 35) is carried out at a temperature less than or equal to 600°C and a duration of less than or equal to 120 s. ! 4. Method according to claim 1 or 2, characterized in that annealing (30, 35) is carried out in a continuous device in an off-line mode. ! 5. Method according to claim 1 or 2, differing in that

Claims (11)

1. Способ обеспечения определенной комбинации свойств у горячекатаной многофазной стали, многофазная структура которой содержит минимум 30% феррита и максимум 50% мартенсита, в частности, у двухфазной стали и стали с TRIP-эффектом, получаемой в обычной линии для горячей прокатки, в линии литья и прокатки тонких слябов или в соответствующих линиях узко- и среднеполосовых станов, или в линии проволочного стана со стандартным составом и условиями проведения процесса, отличающийся тем, что после охлаждения, следующего за горячей прокаткой (10) или другой технологической операцией, например, изготовления деталей посредством последующего или промежуточного отжига (30, 35) с переменными температурой и продолжительностью, приобретает желательную комбинацию прочности и отношения предела текучести к пределу прочности у многофазной стали.1. A method of providing a certain combination of properties for hot rolled multiphase steel, the multiphase structure of which contains at least 30% ferrite and a maximum of 50% martensite, in particular, for two-phase steel and steel with TRIP effect obtained in a conventional hot rolling line in a casting line and rolling thin slabs either in the respective lines of narrow- and mid-band mills, or in the line of a wire mill with a standard composition and process conditions, characterized in that after cooling following hot rolling (10) or Another technological operation, for example, the manufacture of parts by subsequent or intermediate annealing (30, 35) with variable temperature and duration, acquires the desired combination of strength and the ratio of yield strength to tensile strength in multiphase steel. 2. Способ по п.1, отличающийся тем, что отжиг (30, 35) производят таким образом, что полученная структура состоит из основной ферритной матрицы, а также из отпущенного мартенсита или бейнита с долей поверхности порядка 10-50%, причем посредством температуры отжига устанавливают величину предела текучести, обеспечивая мелкодисперсное распределение выделений карбидов на границах зерен мартенсита или бейнита, а уровень предела прочности устанавливают посредством продолжительности отжига.2. The method according to claim 1, characterized in that the annealing (30, 35) is performed in such a way that the resulting structure consists of a basic ferritic matrix, as well as tempered martensite or bainite with a surface fraction of about 10-50%, moreover, by means of temperature annealing set the yield strength, providing a finely dispersed distribution of carbide precipitates at the grain boundaries of martensite or bainite, and the level of tensile strength is set by the duration of annealing. 3. Способ по п.1 или 2, отличающийся тем, что отжиг (30, 35) проводят при температуре, менее или равной 600°С, и продолжительности, менее или равной 120 с.3. The method according to claim 1 or 2, characterized in that the annealing (30, 35) is carried out at a temperature less than or equal to 600 ° C, and a duration of less than or equal to 120 s. 4. Способ по п.1 или 2, отличающийся тем, что отжиг (30, 35) проводится в устройстве непрерывного действия в автономном режиме «off-line».4. The method according to claim 1 or 2, characterized in that the annealing (30, 35) is carried out in a continuous device in an off-line mode. 5. Способ по п.1 или 2, отличающийся тем, что отжиг (30) проводится в режиме «on-line» при оцинковании (40) полосы на стадии подогрева перед поступлением в ванну для оцинкования.5. The method according to claim 1 or 2, characterized in that the annealing (30) is carried out in the "on-line" mode when galvanizing (40) the strip at the heating stage before entering the galvanizing bath. 6. Способ по п.1 или 2, отличающийся тем, что отжигу (30, 35) подвергаются уже готовые прессованные детали.6. The method according to claim 1 or 2, characterized in that annealed (30, 35) ready-pressed parts are subjected to annealing. 7. Способ по п.1 или 2, отличающийся тем, что отжиг (30) проводится зонально целевым образом, в частности в локально ограниченных местах детали.7. The method according to claim 1 or 2, characterized in that the annealing (30) is carried out zonally in a targeted manner, in particular in locally limited places of the part. 8. Устройство для обеспечения определенных комбинаций свойств у горячекатаной многофазной стали, многофазная структура которой содержит минимум 30% феррита и максимум 50% мартенсита, например, у двухфазной стали и стали с TRIP-эффектом, получаемой на обычной линии для горячей прокатки или на линии литья и прокатки тонких слябов, или на соответствующих линиях узко- и среднеполосовых станов, или на линии проволочного стана со стандартным составом и условиями проведения процесса, в частности, для осуществления способа по одному или нескольким предшествующим пп.1-7, отличающееся тем, что в установке или поточной линии в произвольно выбранном месте монтируется нагревательная установка с возможностью осуществления отжига (30, 35) с переменной температурой отжига, менее или равной 600°С, и с переменной продолжительностью отжига, менее или равной 120 с.8. A device for providing certain combinations of properties for hot-rolled multiphase steel, the multiphase structure of which contains at least 30% ferrite and a maximum of 50% martensite, for example, for two-phase steel and steel with TRIP effect obtained on a conventional hot rolling line or on a casting line and rolling thin slabs, or on the corresponding lines of narrow- and mid-band mills, or on the line of a wire mill with a standard composition and process conditions, in particular, for implementing the method according to one or more one of claims 1 to 7, characterized in that in the installation or production line at an arbitrarily selected location a heating installation is mounted with the possibility of annealing (30, 35) with a variable annealing temperature less than or equal to 600 ° C, and with a variable duration of annealing, less than or equal to 120 s. 9. Устройство по п.8, отличающееся тем, что нагревательная установка представляет собой печь непрерывного действия, установленную в линии оцинкования для работы в режиме «on-line».9. The device according to claim 8, characterized in that the heating installation is a continuous furnace installed in the galvanizing line for on-line operation. 10. Устройство по п.8, отличающееся тем, что нагревательная установка представляет собой печь, работающую в режиме «off-line».10. The device according to claim 8, characterized in that the heating installation is a furnace operating in the "off-line" mode. 11. Устройство по п.8, отличающееся тем, что нагревательная установка выполнена таким образом, что зональный отжиг (35) производится в локально ограниченных местах детали до или после ее непосредственного изготовления в виде готового продукта. 11. The device according to claim 8, characterized in that the heating installation is made in such a way that zone annealing (35) is performed in locally limited places of the part before or after its direct manufacture in the form of a finished product.
RU2008109221/02A 2006-01-10 2006-12-11 Method and device for creation of particular componation of properties for multiphase steel RU2379359C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006001198.8 2006-01-10
DE102006001198A DE102006001198A1 (en) 2006-01-10 2006-01-10 Method and device for setting specific property combinations in multiphase steels

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RU2008109221A true RU2008109221A (en) 2009-09-27
RU2379359C2 RU2379359C2 (en) 2010-01-20

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US (1) US20090151821A1 (en)
EP (1) EP1974064A1 (en)
JP (1) JP2009522452A (en)
CN (1) CN101415846B (en)
BR (1) BRPI0620929A2 (en)
CA (1) CA2636287A1 (en)
DE (1) DE102006001198A1 (en)
RU (1) RU2379359C2 (en)
UA (1) UA90348C2 (en)
WO (1) WO2007079876A1 (en)

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DE102008055514A1 (en) * 2008-12-12 2010-06-17 Thyssenkrupp Steel Europe Ag Method for producing a component with improved elongation at break properties
DE102013107100A1 (en) * 2013-07-05 2015-01-08 Thyssenkrupp Steel Europe Ag Wear-resistant, at least partially uncoated steel part
PL228818B1 (en) * 2015-04-14 2018-05-30 Mejer-Nowakowska Magdalena M.S. Steel Spółka Cywilna Method for annealing of wire
DE102016202381B4 (en) * 2016-02-17 2022-08-18 Thyssenkrupp Ag vehicle wheel

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Publication number Publication date
WO2007079876A1 (en) 2007-07-19
DE102006001198A1 (en) 2007-07-12
JP2009522452A (en) 2009-06-11
CN101415846B (en) 2011-12-14
CA2636287A1 (en) 2007-07-19
CN101415846A (en) 2009-04-22
UA90348C2 (en) 2010-04-26
US20090151821A1 (en) 2009-06-18
RU2379359C2 (en) 2010-01-20
EP1974064A1 (en) 2008-10-01
BRPI0620929A2 (en) 2011-11-29

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