EP0718411B1 - Verfahren zum Herstellen von Stahlband zum Tiefziehen von Stahldosen - Google Patents

Verfahren zum Herstellen von Stahlband zum Tiefziehen von Stahldosen Download PDF

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Publication number
EP0718411B1
EP0718411B1 EP95402752A EP95402752A EP0718411B1 EP 0718411 B1 EP0718411 B1 EP 0718411B1 EP 95402752 A EP95402752 A EP 95402752A EP 95402752 A EP95402752 A EP 95402752A EP 0718411 B1 EP0718411 B1 EP 0718411B1
Authority
EP
European Patent Office
Prior art keywords
steel
strip
thickness
cold rolling
process according
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.)
Expired - Lifetime
Application number
EP95402752A
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English (en)
French (fr)
Other versions
EP0718411A1 (de
Inventor
Jacques Ouvrard
Michel Chauvire
Jean-Claude Jouvenel
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.)
Sollac SA
Original Assignee
Sollac SA
Lorraine de Laminage Continu SA SOLLAC
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 Sollac SA, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA
Publication of EP0718411A1 publication Critical patent/EP0718411A1/de
Application granted granted Critical
Publication of EP0718411B1 publication Critical patent/EP0718411B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to a method of manufacturing a strip. steel intended for the production by stamping and re-stamping of steel containers.
  • cold-rolled strips are used made of low carbon or ultra low carbon steel which are transformed by stamping / re-stamping.
  • the bands are obtained from hot rolled strips which are cold rolled a first time then annealed and then cold rolled a second time, the second rolling to cold is done in a single pass which produces a reduction in thickness about 40%.
  • the strips thus obtained have a greater thickness or equal to 0.18 mm, a tensile strength less than 600 MPa, and a satisfactory drawing ability.
  • Such a method is disclosed EP524162A2.
  • the aim of the present invention is to propose a method for the production of cold rolled steel strips with good ability to stamp by conferring an anisotropy coefficient r between 1.5 and 2.5 while having a tensile strength greater than 600 MPa and a thickness less than 0.18 mm.
  • the second cold rolling performs a thickness reduction of at least 35%.
  • the second cold rolling can have two passes, and in this case, during the first pass, we perform a reduction at least 25% thick and during the second pass, a thickness reduction of at least 5%.
  • the thickness reduction achieved during the second cold rolling is between 38% and 47%, and annealing is often carried out between 600 ° C and 700 ° C, annealing can be carried out continuously.
  • the thickness of the strip may be less than 0.17 mm.
  • the inventors have found quite unexpectedly that when we manufacture a cold rolled steel strip of the ultra type low carbon, obtained from hot rolled strips rolled to cold a first time then annealed then cold rolled a second times, and when the second cold rolling is carried out in two passes at instead of a single pass, it was possible to obtain all at once, a low thickness, high mechanical strength and good suitability stamping.
  • thin thickness means a thickness less than 0.20 mm, and preferably less than 0.17 mm; by resistance high mechanical strength means a tensile strength greater than 600 MPa; by good drawing ability is meant a rate of horn C between 0 and -0.4, and a neighboring anisotropy coefficient r of 2 (between 1.5 and 2.5).
  • a strip is produced in known manner. hot rolled which is then cold rolled to obtain a strip cold rolled, (blank), thickness between 0.2 mm and 0.3 mm.
  • This blank is then continuously annealed between 600 ° C and 700 ° C and preferably between 630 ° C and 680 ° C.
  • a second cold rolling comprising at least two passes carried out on a continuous rolling mill.
  • the reduction rate of the first pass must be greater than 30% and the reduction rate of the second pass must be greater than 5%; the total reduction rate must be between 35% and 50%, and preferably between 40% and 45%.
  • Cold rolled strips are thus obtained which are particularly suitable for manufacture by stamping / re-stamping of steel containers of the type drinks boxes, the characteristics of which are indicated below above.
  • Annealing was carried out at 650 ° C; during the second rolling at cold, the reduction during the first pass was 30% and during the second pass the reduction was 10%.
  • the tensile strength of the strip was 675 MPa, the horn rate measured by the magnetic anisotropy method was -0.36 and the anisotropy rate r measured by the RX texture method was 2.01.
  • Annealing was carried out at 650 ° C; during the second rolling at cold, the reduction during the first pass was 30% and during the second pass the reduction was 8%.
  • the tensile strength of the strip was 635 MPa
  • the horn rate measured by the magnetic anisotropy method was -0.25
  • the anisotropy rate r measured by the RX texture method was of 2
  • Annealing was carried out at 650 ° C; during the second rolling at cold, the reduction during the first pass was 20% and during the second pass the reduction was 10%.
  • the tensile strength of the strip was 626 MPa, the horn rate measured by the magnetic anisotropy method was -0.42 and the anisotropy rate r measured by the texture RX method was 1.5.
  • Annealing was carried out at 650 ° C; the second rolling at cold, was carried out in a single pass, the reduction rate of which was 45%.
  • the tensile strength of the strip was 599 MPa
  • the horn rate measured by the magnetic anisotropy method was -0.34
  • the anisotropy rate r measured by the RX texture method was 2.09.
  • Annealing was carried out at 650 ° C; the second rolling at cold, was carried out in a single pass, the reduction rate of which was 30%.
  • the tensile strength of the strip was 599 MPa
  • the horn rate measured by the magnetic anisotropy method was -0.46
  • the anisotropy rate r measured by the RX texture method was 1.5.
  • the examples according to the invention is combine resistance tensile and horn rates and anisotropy coefficients which clearly show the advantage of the invention compared to the examples of the art previous given for comparison.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Press Drives And Press Lines (AREA)
  • Package Frames And Binding Bands (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Steel (AREA)

Claims (10)

  1. Verfahren zum Herstellen eines Stahlbandes, das zur Herstellung von Stahlbehältern mittels Tiefziehen und Napfziehen dient, wobei:
    ein warmgewalztes Stahlband mit äußerst niedrigem Kohlenstoffgehalt bereitgestellt wird,
    ein erster Kaltwalzvorgang des Bandes durchgeführt wird, um einen Rohling zu erhalten,
    der Rohling einem Ausglühen unterworfen wird
    und ein zweiter Kaltwalzvorgang durchgeführt wird,
    dadurch gekennzeichnet, dass der zweite Kaltwalzvorgang mit wenigstens zwei Durchläufen durchgeführt wird, dergestalt, dass ein Band erhalten wird, dessen Dicke kleiner als 0,18 mm ist, dessen Bruchfestigkeit größer oder gleich 600 MPa ist und dessen Anisotropiekoeffizient r zwischen 1,5 und 2,5 liegt.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass während des zweiten Kaltwalzvorgangs eine Dickenverringerung von wenigstens 35 % erfolgt.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass während des zweiten Kaltwalzvorgangs mit den beiden Durchläufen während des ersten Durchlaufs eine Dickenverringerung von wenigstens 25 % und während des zweiten Durchlaufs eine Dickenverringung von wenigstens 5 % erfolgt.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die während des zweiten Kaltwalzvorgangs erfolgte Dickenverringerung zwischen 38 % und 47 % beträgt.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Ausglühen zwischen 600°C und 700°C durchgeführt wird.
  6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Ausglühen kontinuierlich durchgeführt wird.
  7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Stahl mit äußerst niedrigem Kohlenstoffgehalt die folgende chemische Zusammensetzung in Gewichtsprozent aufweist:
    C ≤ 0,006 %
    Si ≤ 0,02 %
    0,15 % ≤ Mn ≤ 0,35 %
    S ≤ 0,015 %
    P ≤ 0,015 %
    N ≤ 0,006 %
    0,02 % ≤ Al ≤ 0,06 %
    Rest Eisen und aus der Verarbeitung stammende Verunreinigungen.
  8. Stahlband mit äußerst niedrigem Kohlenstoffgehalt zur Herstellung von Stahlbehältern durch Tiefziehen/Napfziehen, dadurch gekennzeichnet, dass:
    seine Dicke weniger als 0,18 mm beträgt,
    seine Bruchfestigkeit größer oder gleich 600 MPa ist,
    sein Grad der Zipfeligkeit C zwischen 0 und -0,4 liegt,
    sein Anisotropiekoeffizient r zwischen 1,5 und 2,5 liegt.
  9. Band nach Anspruch 8, dadurch gekennzeichnet, dass seine Dicke kleiner als 0,17 mm ist.
  10. Band nach einem der Ansprüche 8 oder 9, dadurch gekennzeichnet, dass es aus einem Stahl besteht mit der folgenden chemischen Zusammensetzung:
    C ≤ 0,006 %
    Si ≤ 0,02 %
    0,15 % ≤ Mn ≤ 0,35 %
    S ≤ 0,015 %
    P ≤ 0,015 %
    N ≤ 0,006 %
    0,02 % ≤ Al ≤ 0,06 %
    Rest Eisen und aus der Verarbeitung stammende Verunreinigungen.
EP95402752A 1994-12-21 1995-12-07 Verfahren zum Herstellen von Stahlband zum Tiefziehen von Stahldosen Expired - Lifetime EP0718411B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9415350 1994-12-21
FR9415350A FR2728490B1 (fr) 1994-12-21 1994-12-21 Procede de fabrication d'une bande d'acier destinee a la fabrication par emboutissage et re-emboutissage de recipients en acier

Publications (2)

Publication Number Publication Date
EP0718411A1 EP0718411A1 (de) 1996-06-26
EP0718411B1 true EP0718411B1 (de) 2000-02-09

Family

ID=9470010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95402752A Expired - Lifetime EP0718411B1 (de) 1994-12-21 1995-12-07 Verfahren zum Herstellen von Stahlband zum Tiefziehen von Stahldosen

Country Status (10)

Country Link
US (1) US5704997A (de)
EP (1) EP0718411B1 (de)
JP (1) JPH08224602A (de)
AT (1) ATE189704T1 (de)
CA (1) CA2166565A1 (de)
DE (1) DE69515010T2 (de)
ES (1) ES2144591T3 (de)
FR (1) FR2728490B1 (de)
GR (1) GR3033166T3 (de)
PT (1) PT718411E (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997033706A1 (fr) * 1996-03-15 1997-09-18 Kawasaki Steel Corporation Feuille d'acier ultrafine et procede pour la fabriquer
DE19628714C1 (de) * 1996-07-08 1997-12-04 Mannesmann Ag Verfahren zur Herstellung von Präzisionsstahlrohren
CN1162566C (zh) * 1997-09-04 2004-08-18 川崎制铁株式会社 桶用钢板的制造方法
FR2769251B1 (fr) * 1997-10-03 1999-12-24 Lorraine Laminage Procede de fabrication d'une bande de tole d'acier pour la realisation d'emballages metalliques par emboutissage et tole d'acier obtenue
CN1055316C (zh) * 1998-02-25 2000-08-09 谢燕飞 一种低碳高强韧性钢带及其制造工艺
JP4559918B2 (ja) * 2004-06-18 2010-10-13 新日本製鐵株式会社 加工性に優れたブリキおよびテインフリースチール用鋼板およびその製造方法
JP6044207B2 (ja) * 2012-09-11 2016-12-14 Ｊｆｅスチール株式会社 剛性に優れた薄鋼板の製造方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581629A1 (de) * 1992-07-23 1994-02-02 Sollac Stahlblech für Abstrecktiefziehen und Verfahren zur Herstellung dieser Bleche

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1438853A (fr) * 1964-07-01 1966-05-13 Yawata Iron & Steel Co Procédé pour produire des tôles d'acier fines à extrêment bas carbone
FR2115285B1 (de) * 1970-11-21 1974-05-31 Nippon Kokan Kk
EP0524162B1 (de) * 1991-07-17 1998-11-11 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Verfahren zur Herstellung eines dünnen Bandes aus Weichstahl
US5360493A (en) * 1992-06-08 1994-11-01 Kawasaki Steel Corporation High-strength cold-rolled steel sheet excelling in deep drawability and method of producing the same
DE4319431C1 (de) * 1993-06-11 1994-11-03 Rasselstein Ag Verfahren zur Herstellung eines kaltgewalzten Stahlbleches als Ausgangsmaterial für die Herstellung von Schattenmasken

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581629A1 (de) * 1992-07-23 1994-02-02 Sollac Stahlblech für Abstrecktiefziehen und Verfahren zur Herstellung dieser Bleche

Also Published As

Publication number Publication date
ATE189704T1 (de) 2000-02-15
EP0718411A1 (de) 1996-06-26
DE69515010D1 (de) 2000-03-16
DE69515010T2 (de) 2000-08-03
US5704997A (en) 1998-01-06
JPH08224602A (ja) 1996-09-03
FR2728490B1 (fr) 1997-01-24
FR2728490A1 (fr) 1996-06-28
GR3033166T3 (en) 2000-08-31
CA2166565A1 (fr) 1996-06-22
ES2144591T3 (es) 2000-06-16
PT718411E (pt) 2000-06-30

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