RU2017133036A - Подвергнутый чистовому отжигу, высокопрочный стальной лист с покрытием, имеющий повышенный предел текучести и улучшенную степень раздачи отверстия - Google Patents

Подвергнутый чистовому отжигу, высокопрочный стальной лист с покрытием, имеющий повышенный предел текучести и улучшенную степень раздачи отверстия Download PDF

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RU2017133036A
RU2017133036A RU2017133036A RU2017133036A RU2017133036A RU 2017133036 A RU2017133036 A RU 2017133036A RU 2017133036 A RU2017133036 A RU 2017133036A RU 2017133036 A RU2017133036 A RU 2017133036A RU 2017133036 A RU2017133036 A RU 2017133036A
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steel sheet
cold
coating
rolled steel
annealing
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RU2017133036A
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RU2705741C2 (ru
RU2017133036A3 (ru
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Хюнь ЦЗУНЬ
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Арселормиттал
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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
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    • 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
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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
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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    • 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
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    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
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    • 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
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    • C21D1/18—Hardening; Quenching with or without subsequent tempering
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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Claims (16)

1. Холоднокатаный, имеющий покрытие и подвергнутый чистовому отжигу стальной лист, включающий в себя:
холоднокатаный стальной лист, содержащий (в масс. %):
С 0,1–0,3 %; Mn 1-3%; Si 0,5–3,5%; Al 0,05-1,5%; содержание Mo+Cr находится в диапазоне 0-1,0%; а содержание Mo+Cr находится в диапазоне 0,2–0,5%; и
покрытие из цинка или цинкового сплава на упомянутом холоднокатаном стальном листе;
при этом указанный стальной лист с покрытием образован посредством холодной прокатки, нанесением цинкового покрытия на холоднокатаный лист и отжигом упомянутого стального листа после нанесения указанного цинкового покрытия,
причём указанный отжиг осуществлен при температуре 150-650°C в течение периода времени, достаточного для повышения предела текучести отожжённого холоднокатаного стального листа с покрытием по меньшей мере на 30% по сравнению с холоднокатаным стальным листом, находящимся в состоянии непосредственно после нанесения покрытия, и увеличения степени раздачи отверстия отожжённого холоднокатаного стального листа с покрытием по меньшей мере на 80% по сравнению с холоднокатаным стальным листом, находящимся в состоянии непосредственно после нанесения покрытия.
2. Стальной лист по п. 1, в котором указанный отжиг осуществлен при температуре 150-450°C.
3. Стальной лист по п. 2, в котором указанный отжиг осуществлен при температуре 200-400°C.
4. Стальной лист по п. 1, в котором указанный отжиг осуществлен в течение периода времени, достаточного для повышения предела текучести отожжённого холоднокатаного стального листа с покрытием по меньшей мере на 40% по сравнению с холоднокатаным стальным листом, находящимся в состоянии непосредственно после нанесения покрытия.
5. Стальной лист по п. 1, в котором указанный отжиг осуществлен в течение периода времени, достаточного для повышения степени раздачи отверстия отожжённого холоднокатаного стального листа с покрытием по меньшей мере на 95% по сравнению с холоднокатаным стальным листом, находящимся в состоянии непосредственно после нанесения покрытия.
6. Стальной лист по п. 1, в котором указанный отжиг осуществлен в течение периода времени, достаточного для увеличения общего удлинения отожжённого холоднокатаного стального листа с покрытием по меньшей мере на 25% по сравнению с листом, находящимся в состоянии непосредственно после нанесения покрытия.
7. Стальной лист по п. 6, в котором указанный отжиг осуществлен в течение периода времени, достаточного для увеличения общего удлинения отожжённого холоднокатаного стального листа с покрытием по меньшей мере на 40% по сравнению с листом, находящимся в состоянии непосредственно после нанесения покрытия.
8. Стальной лист по п. 1, в котором указанный холоднокатаный стальной лист содержит С 0,15–0,25%.
9. Стальной лист по п. 1, в котором указанный холоднокатаный стальной лист содержит Mn 2–2,5%.
10. Стальной лист по п. 1, в котором указанный холоднокатаный стальной лист содержит Si 1,5–2,5%.
11. Стальной лист по п. 1, в котором указанный холоднокатаный стальной лист содержит Al 0,05-1,0%.
RU2017133036A 2015-02-25 2016-02-24 Подвергнутый чистовому отжигу, высокопрочный стальной лист с покрытием, имеющий повышенный предел текучести и улучшенную степень раздачи отверстия RU2705741C2 (ru)

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