RU2012132863A - HIGH-STRENGTH STEEL SHEET POSSESSING EXCELLENT ABILITY TO THERMAL HARDENING AND FORMABILITY, AND METHOD OF ITS PRODUCTION - Google Patents

HIGH-STRENGTH STEEL SHEET POSSESSING EXCELLENT ABILITY TO THERMAL HARDENING AND FORMABILITY, AND METHOD OF ITS PRODUCTION Download PDF

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RU2012132863A
RU2012132863A RU2012132863/02A RU2012132863A RU2012132863A RU 2012132863 A RU2012132863 A RU 2012132863A RU 2012132863/02 A RU2012132863/02 A RU 2012132863/02A RU 2012132863 A RU2012132863 A RU 2012132863A RU 2012132863 A RU2012132863 A RU 2012132863A
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steel sheet
strength steel
sheet according
addition
elements selected
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RU2012132863/02A
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RU2514743C2 (en
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Таро КИЗУ
Ёсимаса ФУНАКАВА
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ДжФЕ СТИЛ КОРПОРЕЙШН
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226Hot rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

1. Высокопрочный стальной лист, обладающий превосходной способностью к термическому упрочнению и формуемостью, отличающийся тем, что сталь имеет химический состав, содержащий 0,0010-0,0040 мас.% С, не более 0,05 мас.% Si, 0,1-1,0 мас.% Mn, не более 0,10 мас.% Р, не более 0,03 мас.% S, 0,01-0,10 мас.% Al, не более 0,0050 мас.% N, 0,005-0,050 мас.% Ti, остальное - Fe и неизбежные примеси, и удовлетворяющий соотношениям (Ti-3,4·N-1,5·S)/C≤6,0 и Mn/С≥100, и лист имеет прочность при растяжении (TS) не менее 340 МПа, показатель термического упрочнения (ВН) не менее 30 МПа, равномерное относительное удлинение (Е1) не менее 18% и удлинение при текучести после ускоренного старения (YP-E1) не более 1,0%,где химические символы представляют содержание в стали соответствующих элементов в мас.%.2. Высокопрочный стальной лист по п.1, который, кроме того, содержит 0,0005-0,0030 мас.% В.3. Высокопрочный стальной лист по п.1, который, кроме того, содержит 0,005-0,050 мас.% любого одного или более элементов, выбранных из V, Та, W и Мо.4. Высокопрочный стальной лист по п.2, который, кроме того, содержит 0,005-0,050 мас.% любого одного или более элементов, выбранных из V, Та, W и Мо.5. Высокопрочный стальной лист по любому из пп.1-4, который, кроме того, содержит 0,01-0,10 мас.% любого одного или более элементов, выбранных из Cr, Ni и Cu.6. Высокопрочный стальной лист по любому из пп.1-4, который, кроме того, содержит 0,005-0,050 мас.% Sb.7. Высокопрочный стальной лист по п.5, который, кроме того, содержит 0,005-0,050 мас.% Sb.8. Высокопрочный стальной лист по любому из пп.1-4 или 7, который, кроме того, содержит 0,0005-0,01 мас.% любого одного или более элементов, выбранных из Са и REM (редкоземельные элементы).9. Высокопрочный стальной лист по п.5, который, кроме того, содержит 0,0005-0,01 мас.% л�1. High-strength steel sheet excellent in heat hardening and formability, characterized in that the steel has a chemical composition of 0.0010-0.0040 wt% C, not more than 0.05 wt% Si, 0.1 -1.0 wt.% Mn, no more than 0.10 wt.% P, no more than 0.03 wt.% S, 0.01-0.10 wt.% Al, no more than 0.0050 wt.% N , 0.005-0.050 wt% Ti, the rest is Fe and unavoidable impurities, and satisfying the ratios (Ti-3.4N-1.5S) / C≤6.0 and Mn / C≥100, and the sheet has tensile strength (TS) not less than 340 MPa, thermal hardening index (BH) not less than 30 MPa, uniform relative elongation (E1) not less than 18% and yield elongation after accelerated aging (YP-E1) not more than 1.0% where the chemical symbols represent the content of the corresponding elements in the steel in wt% 2. The high strength steel sheet according to claim 1, which further comprises 0.0005-0.0030 wt% B.3. The high strength steel sheet according to claim 1, which further comprises 0.005-0.050 wt% of any one or more elements selected from V, Ta, W and Mo. The high strength steel sheet according to claim 2, which further comprises 0.005-0.050 wt% of any one or more elements selected from V, Ta, W and Mo. The high strength steel sheet according to any one of claims 1 to 4, which further comprises 0.01-0.10 wt% of any one or more elements selected from Cr, Ni and Cu. High-strength steel sheet according to any one of claims 1 to 4, which further comprises 0.005-0.050 wt% Sb. 7. The high strength steel sheet according to claim 5, which further comprises 0.005-0.050 wt% Sb. The high strength steel sheet according to any one of claims 1 to 4 or 7, which further comprises 0.0005-0.01 wt% of any one or more elements selected from Ca and REM (rare earth elements). The high strength steel sheet according to claim 5, which further comprises 0.0005-0.01 wt% l�

Claims (17)

1. Высокопрочный стальной лист, обладающий превосходной способностью к термическому упрочнению и формуемостью, отличающийся тем, что сталь имеет химический состав, содержащий 0,0010-0,0040 мас.% С, не более 0,05 мас.% Si, 0,1-1,0 мас.% Mn, не более 0,10 мас.% Р, не более 0,03 мас.% S, 0,01-0,10 мас.% Al, не более 0,0050 мас.% N, 0,005-0,050 мас.% Ti, остальное - Fe и неизбежные примеси, и удовлетворяющий соотношениям (Ti-3,4·N-1,5·S)/C≤6,0 и Mn/С≥100, и лист имеет прочность при растяжении (TS) не менее 340 МПа, показатель термического упрочнения (ВН) не менее 30 МПа, равномерное относительное удлинение (Е1) не менее 18% и удлинение при текучести после ускоренного старения (YP-E1) не более 1,0%,1. High-strength steel sheet with excellent ability to heat harden and formability, characterized in that the steel has a chemical composition containing 0.0010-0.0040 wt.% C, not more than 0.05 wt.% Si, 0.1 -1.0 wt.% Mn, not more than 0.10 wt.% P, not more than 0.03 wt.% S, 0.01-0.10 wt.% Al, not more than 0.0050 wt.% N , 0.005-0.050 wt.% Ti, the rest is Fe and unavoidable impurities, and satisfies the ratios (Ti-3.4 · N-1.5 · S) / C≤6.0 and Mn / С≥100, and the sheet has tensile strength (TS) of at least 340 MPa, thermal hardening index (BH) of at least 30 MPa, uniform elongation (E1) not less than 18% and elongation at yield after accelerated aging (YP-E1) not more than 1.0%, где химические символы представляют содержание в стали соответствующих элементов в мас.%.where chemical symbols represent the content in steel of the corresponding elements in wt.%. 2. Высокопрочный стальной лист по п.1, который, кроме того, содержит 0,0005-0,0030 мас.% В.2. The high-strength steel sheet according to claim 1, which, in addition, contains 0.0005-0.0030 wt.% Century. 3. Высокопрочный стальной лист по п.1, который, кроме того, содержит 0,005-0,050 мас.% любого одного или более элементов, выбранных из V, Та, W и Мо.3. The high strength steel sheet according to claim 1, which, in addition, contains 0.005-0.050 wt.% Any one or more elements selected from V, Ta, W and Mo. 4. Высокопрочный стальной лист по п.2, который, кроме того, содержит 0,005-0,050 мас.% любого одного или более элементов, выбранных из V, Та, W и Мо.4. The high-strength steel sheet according to claim 2, which, in addition, contains 0.005-0.050 wt.% Any one or more elements selected from V, Ta, W and Mo. 5. Высокопрочный стальной лист по любому из пп.1-4, который, кроме того, содержит 0,01-0,10 мас.% любого одного или более элементов, выбранных из Cr, Ni и Cu.5. High strength steel sheet according to any one of claims 1 to 4, which, in addition, contains 0.01-0.10 wt.% Of any one or more elements selected from Cr, Ni and Cu. 6. Высокопрочный стальной лист по любому из пп.1-4, который, кроме того, содержит 0,005-0,050 мас.% Sb.6. High strength steel sheet according to any one of claims 1 to 4, which, in addition, contains 0.005-0.050 wt.% Sb. 7. Высокопрочный стальной лист по п.5, который, кроме того, содержит 0,005-0,050 мас.% Sb.7. The high-strength steel sheet according to claim 5, which, in addition, contains 0.005-0.050 wt.% Sb. 8. Высокопрочный стальной лист по любому из пп.1-4 или 7, который, кроме того, содержит 0,0005-0,01 мас.% любого одного или более элементов, выбранных из Са и REM (редкоземельные элементы).8. The high-strength steel sheet according to any one of claims 1 to 4 or 7, which, in addition, contains 0.0005-0.01 wt.% Any one or more elements selected from Ca and REM (rare earth elements). 9. Высокопрочный стальной лист по п.5, который, кроме того, содержит 0,0005-0,01 мас.% любого одного или более элементов, выбранных из Са и REM.9. The high-strength steel sheet according to claim 5, which, in addition, contains 0.0005-0.01 wt.% Any one or more elements selected from Ca and REM. 10. Высокопрочный стальной лист по п.6, который, кроме того, содержит 0,0005-0,01 мас.% любого одного или более элементов, выбранных из Са и REM.10. The high-strength steel sheet according to claim 6, which, in addition, contains 0.0005-0.01 wt.% Any one or more elements selected from Ca and REM. 11. Высокопрочный стальной лист по любому из пп.1-4, 7, 9 или 10, на поверхность которого нанесен слой покрытия.11. High-strength steel sheet according to any one of claims 1 to 4, 7, 9 or 10, on the surface of which a coating layer is applied. 12. Высокопрочный стальной лист п.5, на поверхность которого нанесен слой покрытия.12. The high-strength steel sheet of claim 5, on the surface of which a coating layer is applied. 13. Высокопрочный стальной лист по п.6, на поверхность которого нанесен слой покрытия.13. The high strength steel sheet according to claim 6, on the surface of which a coating layer is applied. 14. Высокопрочный стальной лист по п.8, на поверхность которого нанесен слой покрытия.14. The high strength steel sheet of claim 8, on the surface of which a coating layer is applied. 15. Способ производства высокопрочного стального листа, обладающего превосходной способностью к термическому упрочнению и формуемостью, с помощью горячей прокатки стального сляба с химическим составом, указанным в любом из пп.1-14, и последующим последовательным выполнением намотки в рулон, травления, холодной прокатки, отжига и дрессировки, отличающийся тем, что температура при намотке после горячей прокатки составляет не менее 550°С, нагревание от 500°С до температуры выдержки при отжиге выполняют со скоростью, превышающей 0,1°С/с или {0,2·(Ti-3,4·N-1,5·S)/C}°C/c, температура выдержки составляет выше 650°С или {650+20·(Ti-3,4·N-1,5·S)/C}°C, но не выше 900°С, продолжительность выдержки составляет 10-1000 с и дрессировку проводят при степени обжатия в пределах диапазона от (0,8·Mn) до (2+Mn)%.15. A method of manufacturing a high-strength steel sheet having excellent ability to heat harden and formability by hot rolling a steel slab with the chemical composition specified in any one of claims 1-14, and subsequent sequential roll winding, etching, cold rolling, annealing and training, characterized in that the temperature during winding after hot rolling is at least 550 ° C, heating from 500 ° C to the holding temperature during annealing is performed at a speed exceeding 0.1 ° C / s or {0.2 · ( Ti-3 , 4 · N-1,5 · S) / C} ° C / s, the holding temperature is above 650 ° C or {650 + 20 · (Ti-3,4 · N-1,5 · S) / C} ° C, but not higher than 900 ° C, the exposure time is 10-1000 s and training is carried out at a compression ratio within the range from (0.8 · Mn) to (2 + Mn)%. 16. Способ по п.15, при котором поверхность стального листа подвергают нанесению покрытия после отжига.16. The method according to clause 15, in which the surface of the steel sheet is subjected to coating after annealing. 17. Способ по п.16, при котором слой покрытия после его нанесения подвергают легирующей обработке. 17. The method according to clause 16, in which the coating layer after its application is subjected to alloying treatment.
RU2012132863/02A 2011-09-30 2012-07-31 High-strength steel sheet of higher thermal hardening and forming capacity and method of its production RU2514743C2 (en)

Applications Claiming Priority (2)

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JP2011216932A JP2013076132A (en) 2011-09-30 2011-09-30 High strength thin steel sheet having excellent bake hardenability and formability and method for manufacturing the same
JP2011-216932 2011-09-30

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WO2016020714A1 (en) * 2014-08-07 2016-02-11 Arcelormittal Method for producing a coated steel sheet having improved strength, ductility and formability
CN108754328B (en) * 2018-06-14 2020-01-07 鞍钢股份有限公司 Normal-temperature aging resistant bake-hardened steel plate and manufacturing method thereof
KR102485003B1 (en) * 2020-12-11 2023-01-05 주식회사 포스코 High strength plated steel sheet having excellent formability and surface property, and manufacturing method for the same
KR102484978B1 (en) * 2020-12-11 2023-01-05 주식회사 포스코 High strength galvannealed steel sheet having excellent powdering resistance and manufacturing method for the same
KR102451002B1 (en) * 2020-12-15 2022-10-11 주식회사 포스코 Plated steel sheet having excellent strength, formability and surface property and method for manufacturing the same

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DE60125253T2 (en) * 2000-02-29 2007-04-05 Jfe Steel Corp. High strength hot rolled steel sheet with excellent stretch aging properties
CA2379698C (en) * 2000-05-26 2009-02-17 Kawasaki Steel Corporation Cold rolled steel sheet and galvanized steel sheet having strain age hardenability
CA2380377C (en) * 2000-05-31 2007-01-09 Kawasaki Steel Corporation Cold-rolled steel sheets with superior strain-aging hardenability
RU2233904C1 (en) * 2003-05-12 2004-08-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Cold-rolled steel for deep drawing
CN100473741C (en) * 2005-06-29 2009-04-01 宝山钢铁股份有限公司 Soft tin-plate and making process thereof
RU2313583C2 (en) * 2006-01-24 2007-12-27 Открытое акционерное общество "Северсталь" Method for producing of cold-rolled steel for cold pressing
RU2330887C1 (en) * 2006-10-30 2008-08-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Method of producing cold-rolled steel for deep-drawing

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BR102012019139A2 (en) 2015-10-27
RU2514743C2 (en) 2014-05-10
ZA201205762B (en) 2013-08-28
MY173703A (en) 2020-02-17

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