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RU2013146540A - STEEL SHEET FOR HOT STAMPED PRODUCT AND METHOD FOR PRODUCING IT - Google Patents

STEEL SHEET FOR HOT STAMPED PRODUCT AND METHOD FOR PRODUCING IT Download PDF

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RU2013146540A
RU2013146540A RU2013146540/02A RU2013146540A RU2013146540A RU 2013146540 A RU2013146540 A RU 2013146540A RU 2013146540/02 A RU2013146540/02 A RU 2013146540/02A RU 2013146540 A RU2013146540 A RU 2013146540A RU 2013146540 A RU2013146540 A RU 2013146540A
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steel sheet
less
temperature
thickness
stamped product
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RU2013146540/02A
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Russian (ru)
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RU2560890C2 (en
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Хироюки ТАНАХАСИ
Дзун МАКИ
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Ниппон Стил Энд Сумитомо Метал Корпорейшн
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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
    • 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
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching
    • C—CHEMISTRY; METALLURGY
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    • 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
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    • 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
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • C—CHEMISTRY; METALLURGY
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    • 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
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    • 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
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    • 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
    • C21D8/0273—Final recrystallisation annealing
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    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
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    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
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    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
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    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
    • C23C2/0224—Two or more thermal pretreatments
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/12—Aluminium or alloys based thereon
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    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/1275—Next to Group VIII or IB metal-base component
    • Y10T428/12757—Fe
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12785—Group IIB metal-base component
    • Y10T428/12792—Zn-base component
    • Y10T428/12799—Next to Fe-base component [e.g., galvanized]

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  • Heat Treatment Of Sheet Steel (AREA)

Abstract

1. Стальной лист для горячештампованного изделия, имеющий состав, который содержит, в масс.%:С: от 0,15 до 0,35%,Si: от 0,01 до 1,0%,Mn: от 0,3 до 2,3%,Al: от 0,01 до 0,5%, ибаланс из Fe и неизбежных загрязняющих примесей, при этом примеси ограничены как:Р: 0,03% или менее,S: 0,02% или менее иN: 0,1% или менее,при этом стандартное отклонение от твердости по Виккерсу в положении 20 мкм от поверхности стального листа в направлении толщины листа составляет 20 или менее.2. Стальной лист по п.1, дополнительно содержащий, в масс.%, один или более элементов, выбранных из:Cr: от 0,01 до 2,0%,Ti: от 0,001 до 0,5%,Nb: от 0,001 до 0,5%,В: от 0,0005 до 0,01%,Mo: от 0,01 до 1,0%,W: от 0,01 до 0,5%,V: от 0,01 до 0,5%,Cu: от 0,01 до 1,0% иNi: от 0,01 до 5,0%.3. Стальной лист по п.1, имеющий на своей поверхности один из следующих слоев: слой Al покрытия толщиной от 5 мкм до 50 мкм, слой гальванического покрытия толщиной от 5 мкм до 30 мкм или слой из Zn-Fe сплава толщиной от 5 мкм до 45 мкм.4. Способ получения стального листа для горячештампованного изделия, включающий рекристаллизационный отжиг холоднокатаного стального листа, имеющего состав, который содержит, в масс.%:С: от 0,15 до 0,35%,Si: от 0,01 до 1,0%,Mn: от 0,3 до 2,3%,Al: от 0,01 до 0,5% ибаланс из Fe и неизбежных загрязняющих примесей, при этом примеси ограничены как:Р: 0,03% или менее,S: 0,02% или менее иN: 0,1% или менее,включающийпервую стадию нагревания со средней скоростью, составляющей от 8 до 25°С/сек., от комнатной температуры до температуры М (°С), а затемвторую стадию нагревания со средней скоростью, составляющей от 1 до 7°С/сек., до температуры S (°С),при этом температура М (°С) составляет от 600 до 700 (°С), а температура S (°С) составляет от 720 до 820 (°С).5. Способ по п.4, при этом стальной лист дополнительно содержит, в масс.%, од�1. Steel sheet for a hot-stamped product having a composition that contains, in wt%: C: 0.15 to 0.35%, Si: 0.01 to 1.0%, Mn: 0.3 to 2.3%, Al: 0.01 to 0.5%, and a balance of Fe and unavoidable impurities, the impurities being limited as: P: 0.03% or less, S: 0.02% or less, and N: 0.1% or less, while the standard deviation of the Vickers hardness at 20 µm from the surface of the steel sheet in the sheet thickness direction is 20 or less. Steel sheet according to claim 1, further containing, in wt%, one or more elements selected from: Cr: 0.01 to 2.0%, Ti: 0.001 to 0.5%, Nb: 0.001 to 0.5%, B: 0.0005 to 0.01%, Mo: 0.01 to 1.0%, W: 0.01 to 0.5%, V: 0.01 to 0, 5%, Cu: 0.01 to 1.0% and Ni: 0.01 to 5.0%. 3. Steel sheet according to claim 1, having on its surface one of the following layers: an Al coating layer with a thickness of 5 μm to 50 μm, an electroplated coating layer with a thickness of 5 μm to 30 μm, or a layer of Zn-Fe alloy with a thickness of 5 μm to 45 μm 4. A method of producing a steel sheet for a hot-stamped product, including recrystallization annealing of a cold-rolled steel sheet having a composition that contains, in wt%: C: 0.15 to 0.35%, Si: 0.01 to 1.0%, Mn: 0.3 to 2.3%, Al: 0.01 to 0.5% and a balance of Fe and unavoidable impurities, with impurities limited as: P: 0.03% or less, S: 0, 02% or less and N: 0.1% or less, comprising a first heating step at an average rate of 8 to 25 ° C / s from room temperature to M (° C), followed by a second heating step at an average rate, component from 1 to 7 ° С / sec., to the temperature S (° С), while the temperature М (° С) is from 600 to 700 (° С), and the temperature S (° С) is from 720 to 820 ( ° C). 5. The method according to claim 4, wherein the steel sheet additionally contains, in wt%, one

Claims (9)

1. Стальной лист для горячештампованного изделия, имеющий состав, который содержит, в масс.%:1. A steel sheet for a hot stamped product having a composition that contains, in wt.%: С: от 0,15 до 0,35%,C: 0.15 to 0.35% Si: от 0,01 до 1,0%,Si: from 0.01 to 1.0%, Mn: от 0,3 до 2,3%,Mn: from 0.3 to 2.3%, Al: от 0,01 до 0,5%, иAl: 0.01 to 0.5%, and баланс из Fe и неизбежных загрязняющих примесей, при этом примеси ограничены как:balance of Fe and inevitable contaminants, while impurities are limited as: Р: 0,03% или менее,P: 0.03% or less S: 0,02% или менее иS: 0.02% or less and N: 0,1% или менее,N: 0.1% or less при этом стандартное отклонение от твердости по Виккерсу в положении 20 мкм от поверхности стального листа в направлении толщины листа составляет 20 или менее.wherein the standard deviation from Vickers hardness at a position of 20 μm from the surface of the steel sheet in the direction of the sheet thickness is 20 or less. 2. Стальной лист по п.1, дополнительно содержащий, в масс.%, один или более элементов, выбранных из:2. The steel sheet according to claim 1, additionally containing, in wt.%, One or more elements selected from: Cr: от 0,01 до 2,0%,Cr: from 0.01 to 2.0%, Ti: от 0,001 до 0,5%,Ti: from 0.001 to 0.5%, Nb: от 0,001 до 0,5%,Nb: from 0.001 to 0.5%, В: от 0,0005 до 0,01%,B: from 0.0005 to 0.01%, Mo: от 0,01 до 1,0%,Mo: from 0.01 to 1.0%, W: от 0,01 до 0,5%,W: from 0.01 to 0.5%, V: от 0,01 до 0,5%,V: from 0.01 to 0.5%, Cu: от 0,01 до 1,0% иCu: 0.01 to 1.0% and Ni: от 0,01 до 5,0%.Ni: 0.01 to 5.0%. 3. Стальной лист по п.1, имеющий на своей поверхности один из следующих слоев: слой Al покрытия толщиной от 5 мкм до 50 мкм, слой гальванического покрытия толщиной от 5 мкм до 30 мкм или слой из Zn-Fe сплава толщиной от 5 мкм до 45 мкм.3. The steel sheet according to claim 1, having on its surface one of the following layers: an Al coating layer with a thickness of 5 μm to 50 μm, a galvanic coating layer with a thickness of 5 μm to 30 μm, or a Zn-Fe alloy layer with a thickness of 5 μm up to 45 microns. 4. Способ получения стального листа для горячештампованного изделия, включающий рекристаллизационный отжиг холоднокатаного стального листа, имеющего состав, который содержит, в масс.%:4. A method of obtaining a steel sheet for a hot-stamped product, including recrystallization annealing of a cold-rolled steel sheet having a composition that contains, in wt.%: С: от 0,15 до 0,35%,C: 0.15 to 0.35% Si: от 0,01 до 1,0%,Si: from 0.01 to 1.0%, Mn: от 0,3 до 2,3%,Mn: from 0.3 to 2.3%, Al: от 0,01 до 0,5% иAl: 0.01 to 0.5% and баланс из Fe и неизбежных загрязняющих примесей, при этом примеси ограничены как:balance of Fe and inevitable contaminants, while impurities are limited as: Р: 0,03% или менее,P: 0.03% or less S: 0,02% или менее иS: 0.02% or less and N: 0,1% или менее,N: 0.1% or less включающийincluding первую стадию нагревания со средней скоростью, составляющей от 8 до 25°С/сек., от комнатной температуры до температуры М (°С), а затемthe first stage of heating at an average speed of 8 to 25 ° C / sec., from room temperature to temperature M (° C), and then вторую стадию нагревания со средней скоростью, составляющей от 1 до 7°С/сек., до температуры S (°С),the second stage of heating at an average speed of 1 to 7 ° C / sec., to a temperature S (° C), при этом температура М (°С) составляет от 600 до 700 (°С), а температура S (°С) составляет от 720 до 820 (°С).wherein the temperature M (° C) is from 600 to 700 (° C), and the temperature S (° C) is from 720 to 820 (° C). 5. Способ по п.4, при этом стальной лист дополнительно содержит, в масс.%, один или более следующих элементов:5. The method according to claim 4, wherein the steel sheet further comprises, in wt.%, One or more of the following elements: Cr: от 0,01 до 2,0%,Cr: from 0.01 to 2.0%, Ti: от 0,001 до 0,5%,Ti: from 0.001 to 0.5%, Nb: от 0,001 до 0,5%,Nb: from 0.001 to 0.5%, В: от 0,0005 до 0,01%,B: from 0.0005 to 0.01%, Mo: от 0,01 до 1,0%,Mo: from 0.01 to 1.0%, W: от 0,01 до 0,5%,W: from 0.01 to 0.5%, V: от 0,01 до 0,5%,V: from 0.01 to 0.5%, Cu: от 0,01 до 1,0%, иCu: from 0.01 to 1.0%, and Ni: от 0,01 до 5,0%.Ni: 0.01 to 5.0%. 6. Способ по п.5, в котором производительность стана на упомянутой стадии горячей прокатки составляет от 60 до 90%, а производительность стана на упомянутой стадии холодной прокатки составляет от 30 до 90%.6. The method according to claim 5, in which the productivity of the mill at the said stage of hot rolling is from 60 to 90%, and the productivity of the mill at the said stage of cold rolling is from 30 to 90%. 7. Способ по п.4, дополнительно включающий, после упомянутой стадии рекристаллизационного отжига, стадию погружения упомянутого стального листа в ванну из Al для формирования слоя Al покрытия на его поверхности.7. The method according to claim 4, further comprising, after said recrystallization annealing step, the step of immersing said steel sheet in an Al bath to form an Al coating layer on its surface. 8. Способ по п.4, дополнительно включающий, после упомянутой стадии рекристаллизационного отжига, стадию погружения упомянутого стального листа в ванну из Zn для гальванизации для формирования слоя гальванического покрытия на его поверхности.8. The method according to claim 4, further comprising, after said recrystallization annealing step, a step of immersing said steel sheet in a Zn bath for galvanization to form a plating layer on its surface. 9. Способ по п.4, дополнительно включающий, после стадии рекристаллизационного отжига, стадию погружения стального листа в ванну из Zn для формирования слоя гальванического покрытия на его поверхности, а затем дальнейшее нагревание до 600°С или менее для формирования слоя из сплава Zn-Fe на упомянутой поверхности. 9. The method according to claim 4, further comprising, after the recrystallization annealing step, the step of immersing the steel sheet in a Zn bath to form a plating layer on its surface, and then further heating to 600 ° C or less to form a layer of Zn- alloy Fe on said surface.
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