EP0780480A1 - Verfahren zur Herstellung eines kaltgewalzten, höherfesten Bandstahles mit guter Umformbarkeit bei isotropen Eigenschaften - Google Patents

Verfahren zur Herstellung eines kaltgewalzten, höherfesten Bandstahles mit guter Umformbarkeit bei isotropen Eigenschaften Download PDF

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Publication number
EP0780480A1
EP0780480A1 EP96114389A EP96114389A EP0780480A1 EP 0780480 A1 EP0780480 A1 EP 0780480A1 EP 96114389 A EP96114389 A EP 96114389A EP 96114389 A EP96114389 A EP 96114389A EP 0780480 A1 EP0780480 A1 EP 0780480A1
Authority
EP
European Patent Office
Prior art keywords
steel
max
rolling
content
cold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96114389A
Other languages
German (de)
English (en)
French (fr)
Inventor
Bernhard Dr. Engl
Günter Dipl.-Ing. Stich
Klaus-Dieter Horn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Steel Europe AG
Original Assignee
Fried Krupp AG Hoesch Krupp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fried Krupp AG Hoesch Krupp filed Critical Fried Krupp AG Hoesch Krupp
Publication of EP0780480A1 publication Critical patent/EP0780480A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C21D8/0421—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 working steps
    • C21D8/0436—Cold 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C21D8/0421—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 working steps
    • C21D8/0426—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
    • C21D8/0473—Final recrystallisation annealing

Definitions

  • the invention relates to a method for producing a strip steel according to the preamble of claim 1, wherein such steels and their composition belong to the prior art.
  • Cold rolled steel strip is widely used for the production of cold formed products. Depending on the type of forming process, different properties (characteristic values) are required.
  • Good formability is characterized by the highest possible r values, which characterize the deep-drawability, high n values, which characterize the stretchability, and high elongation values, which characterize the plane strain properties.
  • the method according to the invention is suitable for setting yield strengths in the range between 200 and 420 N / mm 2 .
  • the mechanical properties are isotropic.
  • the process in its individual variants also allows higher r values to be set and offers the possibility of achieving bake hardening.
  • the advantages of continuous annealing or hot-dip coating can also be included.
  • the advantages according to the invention can be achieved with Ti, Nb, V or Zr.
  • the process according to the invention permits the production of isotropic strip steels not only by the hood but also by the continuous process and thus allows bakehardening to be achieved and refinement by the hot-dip process.
  • Table 1 shows the chemical composition of the steels.
  • the steels were alloyed with at least the amount of elements Ti and / or Nb or V required for stoichiometric nitrogen setting.
  • Steels 4 and 9 were also alloyed with phosphorus to increase strength.
  • Table 2 shows the manufacturing conditions for the steels. It shows the combination of properties according to the invention of low final roll temperature below A r3 and high reel temperature (> 650 ° C.).
  • Table 3 shows the mechanical quality values, the degree of skin passage and the grain size of the steels of 70% cold-rolled strip. Due to the hot strip production according to the invention, the skin pass rate on the cold strips could be approx. Can be set 1/3 lower. Furthermore, high r m values (1.4 - 1.65) were achieved with vacuum decarburized steels, with low ⁇ r values ( ⁇ 0.1).
  • Fig. 1 the tip height is plotted against the degree of cold rolling for the continuously annealed steels and in Fig. 2 that for the annealed steels.
  • the records show that between 50 and 85% low-strip cold strips were produced in the case of the continuously annealed as well as the annealed annealed steels.
  • the usual degree of cold rolling of approx. 70% the tip height of all examples is tip-free.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)
EP96114389A 1995-12-16 1996-09-09 Verfahren zur Herstellung eines kaltgewalzten, höherfesten Bandstahles mit guter Umformbarkeit bei isotropen Eigenschaften Withdrawn EP0780480A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19547181A DE19547181C1 (de) 1995-12-16 1995-12-16 Verfahren zur Herstellung eines kaltgewalzten, höherfesten Bandstahles mit guter Umformbarkeit bei isotropen Eigenschaften
DE19547181 1995-12-16

Publications (1)

Publication Number Publication Date
EP0780480A1 true EP0780480A1 (de) 1997-06-25

Family

ID=7780416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96114389A Withdrawn EP0780480A1 (de) 1995-12-16 1996-09-09 Verfahren zur Herstellung eines kaltgewalzten, höherfesten Bandstahles mit guter Umformbarkeit bei isotropen Eigenschaften

Country Status (6)

Country Link
US (1) US5906690A (cs)
EP (1) EP0780480A1 (cs)
CZ (1) CZ283200B6 (cs)
DE (1) DE19547181C1 (cs)
ES (1) ES2104529T1 (cs)
PL (1) PL317513A1 (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1225235A3 (de) * 2001-01-23 2002-08-07 Salzgitter AG Verfahren zur Herstellung eines kalt gewalzten Bandes oder Bleches aus Stahl und nach dem Verfahren herstellbares Band oder Blech
KR100738849B1 (ko) * 2000-04-22 2007-07-12 쉐플러 카게 롤링 베어링 부품

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19622164C1 (de) * 1996-06-01 1997-05-07 Thyssen Stahl Ag Verfahren zur Erzeugung eines kaltgewalzten Stahlbleches oder -bandes mit guter Umformbarkeit
BE1011066A3 (fr) * 1997-03-27 1999-04-06 Cockerill Rech & Dev Acier au niobium et procede de fabrication de produits plats a partir de celui-ci.
TW515847B (en) * 1997-04-09 2003-01-01 Kawasaki Steel Co Coating/baking curable type cold rolled steel sheet with excellent strain aging resistance and method for producing the same
DE19736509A1 (de) * 1997-08-22 1999-04-22 Krupp Ag Hoesch Krupp Verfahren zur Herstellung eines kaltgewalzten Ti-IF-Bandstahles mit hervorragender Umformbarkeit bei isotropen Eigenschaften
EP1253209A3 (de) * 1998-12-30 2005-03-02 Hille & Müller GmbH Stahlband mit guten Umformeigenschaften sowie Verfahren zum Herstellen desselben
DE10333875A1 (de) * 2003-07-25 2005-02-17 Ina-Schaeffler Kg Dünnwandige Wälzlager
DE102005058658A1 (de) * 2005-12-07 2007-06-14 Kermi Gmbh Verfahren zur Wanddickenreduzierung von Stahlheizkörpern
RU2361006C2 (ru) * 2007-09-03 2009-07-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Низкоуглеродистая сталь для эмалирования и способ ее горячей прокатки
RU2361005C2 (ru) * 2007-09-19 2009-07-10 Открытое акционерное общество "Магнитогорский металлургический комбинат" Тонколистовая холоднокатаная сталь для штамповки
CN102312167B (zh) * 2010-06-29 2014-04-02 鞍钢股份有限公司 一种高强度双面搪瓷用热轧钢板及其制造方法
CN102787215A (zh) * 2011-05-19 2012-11-21 宝山钢铁股份有限公司 搪瓷钢的rh增氮控制方法
CN102328191B (zh) * 2011-10-19 2013-08-28 无锡市锡州冷拉型钢有限公司 一种c型槽钢的生产工艺
CN105463321A (zh) * 2015-12-08 2016-04-06 武汉钢铁(集团)公司 罩式退火工艺平面各向同性钢及其制造方法
CN105483537B (zh) * 2015-12-09 2018-10-16 武汉钢铁有限公司 平面各向同性优良屈服强度为180MPa级别的冷轧冲压用钢及其制造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2155620A1 (de) * 1970-12-19 1972-07-06 Nippon Kokan Kk Vakuumentgaster Stahl, der zu Platten für das Sondertiefziehen heiß verwalzt ist, und Verfahren zu dessen Herstellung
FR2472021A1 (fr) * 1979-12-14 1981-06-26 Nippon Kokan Kk Procede pour fabriquer une bande d'acier a haute resistance laminee a froid ayant une excellente aptitude au formage a la presse
EP0041354A1 (en) * 1980-05-31 1981-12-09 Kawasaki Steel Corporation Method for producing cold rolled steel sheets having a noticeably excellent formability
EP0048761A1 (en) * 1980-03-31 1982-04-07 Kawasaki Steel Corporation High-tensile, cold-rolled steel plate with excellent formability and process for its production, as well as high-tensile, galvanized steel plate with excellent formability, and process for its production
GB2085331A (en) * 1980-09-25 1982-04-28 Nippon Steel Corp Process for producing cold rolled steel strip useful for motor vehicles
EP0108268A1 (en) * 1982-10-08 1984-05-16 Nippon Steel Corporation Method for the production of cold rolled steel sheet having super deep drawability
EP0574814A2 (en) * 1992-06-08 1993-12-22 Kawasaki Steel Corporation High-strength cold-rolled steel sheet excelling in deep drawability and method of producing the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5967322A (ja) * 1982-10-08 1984-04-17 Kawasaki Steel Corp 深絞り用冷延鋼板の製造方法
DE3803064C2 (de) * 1988-01-29 1995-04-20 Preussag Stahl Ag Kaltgewalztes Blech oder Band und Verfahren zu seiner Herstellung
US5137584A (en) * 1991-07-05 1992-08-11 Armco Steel Company, L.P. Niobium carbide strengthened steel for porcelain enameling

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2155620A1 (de) * 1970-12-19 1972-07-06 Nippon Kokan Kk Vakuumentgaster Stahl, der zu Platten für das Sondertiefziehen heiß verwalzt ist, und Verfahren zu dessen Herstellung
FR2472021A1 (fr) * 1979-12-14 1981-06-26 Nippon Kokan Kk Procede pour fabriquer une bande d'acier a haute resistance laminee a froid ayant une excellente aptitude au formage a la presse
EP0048761A1 (en) * 1980-03-31 1982-04-07 Kawasaki Steel Corporation High-tensile, cold-rolled steel plate with excellent formability and process for its production, as well as high-tensile, galvanized steel plate with excellent formability, and process for its production
EP0041354A1 (en) * 1980-05-31 1981-12-09 Kawasaki Steel Corporation Method for producing cold rolled steel sheets having a noticeably excellent formability
GB2085331A (en) * 1980-09-25 1982-04-28 Nippon Steel Corp Process for producing cold rolled steel strip useful for motor vehicles
EP0108268A1 (en) * 1982-10-08 1984-05-16 Nippon Steel Corporation Method for the production of cold rolled steel sheet having super deep drawability
EP0574814A2 (en) * 1992-06-08 1993-12-22 Kawasaki Steel Corporation High-strength cold-rolled steel sheet excelling in deep drawability and method of producing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100738849B1 (ko) * 2000-04-22 2007-07-12 쉐플러 카게 롤링 베어링 부품
EP1225235A3 (de) * 2001-01-23 2002-08-07 Salzgitter AG Verfahren zur Herstellung eines kalt gewalzten Bandes oder Bleches aus Stahl und nach dem Verfahren herstellbares Band oder Blech
US6749696B2 (en) 2001-01-23 2004-06-15 Salzgitter Ag Process for producing a cold-rolled strip or sheet of steel and strip or sheet which can be produced by the process

Also Published As

Publication number Publication date
CZ283200B6 (cs) 1998-01-14
US5906690A (en) 1999-05-25
PL317513A1 (en) 1997-06-23
CZ309496A3 (en) 1997-09-17
ES2104529T1 (es) 1997-10-16
DE19547181C1 (de) 1996-10-10

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