EP0906961B1 - Verfahren zum Herstellen von Stahlband für die Produktion metallischer Verpackungen durch Tiefziehen und also hergestelltes Stahlband - Google Patents

Verfahren zum Herstellen von Stahlband für die Produktion metallischer Verpackungen durch Tiefziehen und also hergestelltes Stahlband Download PDF

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Publication number
EP0906961B1
EP0906961B1 EP98402383A EP98402383A EP0906961B1 EP 0906961 B1 EP0906961 B1 EP 0906961B1 EP 98402383 A EP98402383 A EP 98402383A EP 98402383 A EP98402383 A EP 98402383A EP 0906961 B1 EP0906961 B1 EP 0906961B1
Authority
EP
European Patent Office
Prior art keywords
cold rolling
strip
steel
done
rolling
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
EP98402383A
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English (en)
French (fr)
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EP0906961A1 (de
Inventor
Véronique Sardoy
Jean-Claude Jouvenel
Jacques Ouvrard
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
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Filing date
Publication date
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Publication of EP0906961A1 publication Critical patent/EP0906961A1/de
Application granted granted Critical
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Anticipated expiration legal-status Critical
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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
    • C21D8/0447—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
    • C21D8/0468—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 between cold rolling steps
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium

Definitions

  • the invention relates to a method of manufacturing a sheet metal strip. steel for the production of metal packaging and the sheet obtained by the process.
  • Sheets with strong characteristics may need to be obtained mechanical, in particular mechanical strength and high yield strength for making metal bodies or bodies with very good resistance, even in the case of very thin sheets for the production of certain packaging.
  • the level of mechanical characteristics of the sheet which is obtained after the second cold rolling is a function of the reduction rate or the elongation of the sheet obtained during the two passes of the second rolling.
  • the double reduction process which implements a second cold rolling in two passes after annealing the sheets, was applied to steel grades for both ultra low carbon (ULC) packaging the carbon content of which is less than 0.008% than that of steels of other types, for example to renitrided low aluminum steels containing from 8 to 16 thousandths percent of nitrogen.
  • ULC ultra low carbon
  • the object of the invention is to propose a manufacturing process a strip of sheet steel for the production of metal packaging allowing to obtain mechanical characteristics at least as high than in the case of double reduction manufacturing processes, with a lower work hardening of the sheet and therefore better formability too both in the case of ULC steel and in the case of low aluminum steel renitrence.
  • the method of the invention comprising aging in conditions defined between the two passes of the second rolling which are carried out with controlled elongation rates, is made according to claim 1 in in the case of ULC steels and according to claim 4, in the case of low steels renitrided aluminum.
  • Example 1 case of an ultra low carbon steel ULC.
  • the blank was subjected to a second cold rolling in a skin-pass rolling mill.
  • Sheet metal ref Allongt 1 passes era TT Re (MPa) Allongt 2nd pass Total elongation Re (Mpa) SP output Re (MPa) after 200 ° C / 20mn AT 43% 562 606 B 31% 527 9% 43% 558 610 VS 31% 20 ° C / 10J 568 9% 43% 594 648 E 31% 75 ° C / 3h 552 9% 43% 616 665 F 31% 200 ° C / 20 minutes 565 9% 43% 616 668 G 31% 20 ° C / 3j 560 9% 43% 589 621
  • the sheets designated by the references A and B have not been subjected to a treatment according to the invention.
  • the sheets A and B obtained at the end from the second cold rolling to the skin-pass are designated as sheets comparative.
  • the sheets designated under the references C, E, F and G were subjected, according to the method of the invention, to a second cold rolling in two passes with aging between the two skin-pass rolling passes.
  • the total elongation of the sheet is 43%, this elongation being obtained in a single pass in the case of sheet A.
  • the elongation is obtained in two passes (respectively 31% and 9% elongation), without intermediate aging treatment between two passes, in the case of sheet B.
  • Sheet C is subjected to aging for 10 days at 20 ° C between the two cold rolling passes.
  • An aging treatment at 200 ° C for 20 minutes is carried out between the two passes from the final cold rolling to the skin-pass (extensions of 31 and 9%) in the case of sheet F and sheet G is subject three days aging at 20 ° C between the two rolling passes final.
  • the elastic limit of the sheets was measured in MPa, at the end of the treatment thermal after the first pass from cold rolling to the skin-pass, when two rolling passes are made (sheets B to G); limits corresponding elastics are reported in the fourth column of the table I.
  • the elastic limits of the sheets were also measured immediately after leaving the skin-pass (7 th column of table I) and after holding the sheet for 20 minutes at 200 ° C. after leaving the skin-pass (8 th column of the table I).
  • Sheet B which is made with a second rolling in two passes therefore has mechanical characteristics, after 20 minutes at 200 ° C, slightly higher than sheet A produced by a second rolling in one pass.
  • an additional improvement is brought about by an aging treatment between the two rolling passes of the rolling final.
  • the limit elastic between the two rolling passes is considerably increased by a treatment of aging, as it appears by comparing the limits elastic of sheets C to G at the elastic limit of sheet B.
  • the elastic limits, immediately after leaving the skin-pass or after 20 minutes at 200 ° C, are further increased due to the hardening brought about by the second pass of rolling.
  • the final elastic limits obtained on sheets C to G of which the production is carried out according to the invention are significantly higher than the final elastic limits of sheets A and B obtained by a process of second rolling in one pass (sheet A) or second rolling in two passes (sheet B) according to the prior art, the total elongation rate being identical in all cases.
  • the process according to the invention therefore makes it possible to obtain, for a total hardening of identical sheet, mechanical characteristics higher. Because the ability to form sheet metal and in particular the ability at the stamping depend on the hardening, one can obtain sheets having at the same time satisfactory forming characteristics and high mechanical characteristics.
  • ultra low carbon steel can age at an ambient temperature of around 20 ° C for a period of 3 to 10 days, at a moderate temperature between 50 ° C and 100 ° C for a period of 1 to 5 hours, or at a temperature higher, between 150 ° C and 300 ° C, for a period between 10 minutes and 1 hour.
  • Sheet metal ref Allongt 1 passes era TT Re (MPa) Long 2nd pass Total elongation Re (MPa) SP output AT' 28% 570 B ' 20% 20 ° C / 3j 601 6% 28% 595 VS' 20% 75 ° C / 10h 600 6% 28% 635 OF 20% 200 ° C / 20 minutes 630 6% 28% 625
  • the sheet 1 ' is produced by an elaboration process according to art while the sheets B ', C' and D 'are produced by a process according to the invention.
  • the second cold rolling is carried out in a single pass with an elongation rate of 28%.
  • the elastic limit of the sheet at the exit of the skin-pass is 570 MPa.
  • the sheets B ', C' and D ' were produced by a process according to the invention in which the second cold rolling is carried out in two passes (20% and 6% elongation respectively) with a heat treatment of aging between the two passes.
  • the manufacturing processes for sheets B ', C' and D ' are distinguished by the conditions under which the heat treatment between the two passes of the final rolling.
  • Sheet B ' was aged at an ambient temperature of 20 ° C for three days.
  • Sheet C ' has been aged at a moderate temperature of 75 ° C for 10 hours and the sheet metal D has been aged at a temperature higher than 200 ° C for 20 minutes.
  • the elastic limits obtained at the exit of the skin-pass after the second rolling pass producing 6% elongation are all greater than the elastic limit of the sheet A 'obtained by rolling with skin pass in one pass.
  • sheet B ' Although long-term aging at room temperature is satisfactory (sheet B '), it is preferable to carry out the aging at a higher temperature, for a shorter time.
  • a new dislocation network or second dislocation network During the second skin pass pass, a new dislocation network or second dislocation network.
  • This new configuration of the dislocation network explains obtaining a better formability for characteristics mechanical properties or obtaining mechanical characteristics maintaining good formability.
  • the invention applies to all steels for Al-K sheets, that is to say steels calmed with aluminum, without carburogenic and / or ni scholarogenic elements, when these sheet steels are continuously annealed.
  • the aging treatment can be carried out at a temperature close to 20 ° C, for a period of 3 to 10 days, or at a moderate temperature between 50 and 100 ° C for a period of 5 to 15 hours, or even at a higher temperature between 150 and 300 ° C for a period of between 10 minutes and an hour.
  • the invention also applies to ultra low carbon steels whose general composition is given above.
  • the sheets obtained by the process of the invention can be used in all DR sheet packaging applications.
  • the sheets can be cut to produce blanks intended to the manufacture of bodies or bottoms of boxes two or three pieces with strong mechanical characteristics.
  • the sheets obtained by the process of the invention can be used in thicknesses weaker.
  • the total elongation rate during the second cold rolling may be different from the elongation rates shown above.
  • the distribution of the elongation percentages between the first and the second pass of the second cold rolling may be different from the indicated distributions upper.
  • the second cold rolling with an elongation rate between 25% and 35% during the first rolling pass and with a rate elongation less than 15% and preferably between 5% and 10% during the second rolling phase.
  • the second rolling with an elongation rate of between 15% and 25% during the first rolling pass and a rate of less than 10% during the second pass of the second cold rolling.
  • the second rolling is preferably carried out the second rolling with an elongation rate of between 15% and 25% during the first rolling pass and a rate of less than 10%, during the second pass of the second cold rolling.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Package Frames And Binding Bands (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Claims (5)

  1. Verfahren zur Herstellung eines Stahlblechbandes zur Herstellung metallischer Verpackungen mittels Tiefziehen, wobei:
    ein warmgewalztes Band aus Stahl mit ultraniedrigem Kohlenstoffgehalt bearbeitet wird, das die nachstehende chemische Zusammensetzung, bezogen auf das Gewicht, aufweist:
    Kohlenstoff ≤ 0,006 %
    Silizium ≤ 0,02 %
    0,15 % ≤ Mangan ≤ 0,25 %
    Schwefel ≤ 0,015 %
    Phosphor ≤ 0,017 %
    Stickstoff ≤ 0,006 %
    Aluminium zwischen 0,02 % und 0,04 %,
    wobei der Rest Eisen und aus der Bearbeitung resultierende Verunreinigungen ist,
    ein erster Kaltwalzvorgang mit dem warmgewalzten Band durchgeführt wird, damit ein vorgewalzter Block erhalten wird,
    der vorgewalzte Block einem kontinuierlichen Rekristallisationsglühen unterworfen wird,
    ein zweiter Kaltwalzvorgang mit dem vorgewalzten Block mit zumindest zwei Durchgängen durchgeführt wird, damit das Blechband für die Verpackung in seiner endgültigen Dicke erhalten wird,
    wobei der zweite Kaltwalzvorgang mit einem Streckgrad von 25 % bis 35 % beim ersten Walzdurchgang und mit einem Streckgrad von unter 15 % und vorzugsweise von 5 bis 10 % in der zweiten Walzphase durchgeführt wird,
    und wobei das Stahlblechband zwischen den beiden Durchgängen des zweiten Kaltwalzvorgangs einer Alterung unterworfen wird,
    dadurch gekennzeichnet, dass die Alterungsbehandlung bei Umgebungstemperatur von etwa 20°C für eine Dauer von 3 bis 10 Tagen erfolgt, bei einer mäßigen Temperatur zwischen 50°C und 100°C für eine Dauer von 1 bis 5 Stunden erfolgt oder bei einer höheren Temperatur zwischen 150°C und 300°C für eine Dauer von 10 Minuten bis 1 Stunde erfolgt.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Alterung bei einer mäßigen Temperatur in der Größenordnung von 75°C für eine Dauer von etwa drei Stunden durchgeführt wird.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Alterung bei einer Temperatur in der Größenordnung von 200°C für eine Dauer von etwa 20 Minuten durchgeführt wird.
  4. Verfahren zur Herstellung eines Stahlblechbandes zur Herstellung metallischer Verpackungen mittels Tiefziehen, wobei:
    ein warmgewalztes Band aus einem nitriergehärteten Stahl mit niedrigem Aluminiumgehalt bearbeitet wird, das die nachstehende Zusammensetzung, bezogen auf das Gewicht, aufweist:
    Kohlenstoff von 0,05 bis 0,08 %
    Mangan von 0,200 bis 0,450 %
    Aluminium < 0,020%
    Stickstoff von 0,008 bis 0,016 %
    Schwefel < 0,020%
    Silizium < 0,020%
    wobei der Rest aus Eisen und verunreinigenden Elementen besteht,
    ein erster Kaltwalzvorgang mit dem warmgewalzten Band durchgeführt wird, damit ein vorgewalzter Block erhalten wird,
    der vorgewalzte Block einem kontinuierlichen Rekristallisationsglühen unterworfen wird,
    ein zweiter Kaltwalzvorgang mit dem vorgewalzten Block mit zumindest zwei Durchgängen durchgeführt wird, damit das Blechband für die Verpackung in seiner endgültigen Dicke erhalten wird,
    und wobei das Stahlblechband zwischen den beiden Durchgängen des zweiten Kaltwalzvorgangs einer Alterung unterworfen wird,
    dadurch gekennzeichnet, dass der zweite Kaltwalzvorgang mit einem Streckgrad von 15 bis 25 % beim ersten Durchgang des zweiten Walzvorgangs und mit einem Streckgrad von unter 10% beim zweiten Durchgang des zweiten Kaltwalzvorgangs durchgeführt wird und die Alterungsbehandlung bei Umgebungstemperatur von etwa 20°C für eine Dauer von 3 bis 10 Tagen erfolgt, bei einer mäßigen Temperatur zwischen 50°C und 100°C für eine Dauer von 5 bis 15 Stunden erfolgt, bei einer höheren Temperatur zwischen 150°C und 300°C für eine Dauer von 10 Minuten bis 1 Stunde erfolgt.
  5. Blechband aus nitriergehärtetem Stahl mit niedrigem Aluminiumgehalt zur Herstellung metallischer Verpackungen mittels Tiefziehen, das sowohl starke mechanische Eigenschaften als auch gute Formbarkeit durch eine doppelte Walzung mit einem zweiten Kaltwalzvorgang in zwei Durchgängen besitzt,
    dadurch gekennzeichnet, dass der nitriergehärtete Stahl mit niedrigem Aluminiumgehalt die nachstehende Zusammensetzung, bezogen auf das Gewicht, aufweist:
    Kohlenstoff von 0,05 bis 0,08 %
    Mangan von 0,200 bis 0,450 %
    Aluminium < 0,020 %
    Stickstoff von 0,008 bis 0,016 %
    Schwefel < 0,020 %
    Silizium < 0,020 %
    wobei der Rest aus Eisen und verunreinigenden Elementen besteht, und dadurch, dass es ein erstes Netz von Versetzungen besitzt, die verankert sind durch Elemente in Lösung, bestehend aus mindestens einem der Elemente Kohlenstoff und Stickstoff, und ein zweites Netz von Versetzungen besitzt, das dem ersten Netz von Versetzungen überlagert ist.
EP98402383A 1997-10-03 1998-09-28 Verfahren zum Herstellen von Stahlband für die Produktion metallischer Verpackungen durch Tiefziehen und also hergestelltes Stahlband Expired - Lifetime EP0906961B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9712375 1997-10-03
FR9712375A FR2769251B1 (fr) 1997-10-03 1997-10-03 Procede de fabrication d'une bande de tole d'acier pour la realisation d'emballages metalliques par emboutissage et tole d'acier obtenue

Publications (2)

Publication Number Publication Date
EP0906961A1 EP0906961A1 (de) 1999-04-07
EP0906961B1 true EP0906961B1 (de) 2002-09-04

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EP98402383A Expired - Lifetime EP0906961B1 (de) 1997-10-03 1998-09-28 Verfahren zum Herstellen von Stahlband für die Produktion metallischer Verpackungen durch Tiefziehen und also hergestelltes Stahlband

Country Status (8)

Country Link
US (1) US6156131A (de)
EP (1) EP0906961B1 (de)
AT (1) ATE223503T1 (de)
CA (1) CA2246591C (de)
DE (1) DE69807617T2 (de)
ES (1) ES2181143T3 (de)
FR (1) FR2769251B1 (de)
PT (1) PT906961E (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108624741A (zh) * 2017-03-23 2018-10-09 中国科学院金属研究所 兼具高热稳定性、高强度、高塑性的多相twip钢的制备方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2795742B1 (fr) 1999-07-01 2001-08-03 Lorraine Laminage Tole d'acier a moyen carbone calme a l'aluminium pour emballage
FR2795744B1 (fr) 1999-07-01 2001-08-03 Lorraine Laminage Tole d'acier a basse teneur en aluminium pour emballage
FR2795740B1 (fr) * 1999-07-01 2001-08-03 Lorraine Laminage Tole d'acier a bas carbone calme a l'aluminium pour emballage
FR2795743B1 (fr) * 1999-07-01 2001-08-03 Lorraine Laminage Tole d'acier a basse teneur en aluminium pour emballage
JP5526483B2 (ja) 2008-03-19 2014-06-18 Ｊｆｅスチール株式会社 高強度缶用鋼板およびその製造方法
CN107326268B (zh) * 2017-08-16 2019-03-15 马鞍山钢铁股份有限公司 一种经济型深冲冷轧搪瓷用钢及生产方法
CN111266421B (zh) * 2020-01-22 2022-04-12 银邦金属复合材料股份有限公司 铝钢复合材料及其制备方法和电站空冷设备

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Publication number Priority date Publication date Assignee Title
FR2145057A5 (de) * 1971-07-02 1973-02-16 Ferrieux Francois
JPS5413846B2 (de) * 1973-06-18 1979-06-02
JPS5616650A (en) * 1979-07-16 1981-02-17 Kawasaki Steel Corp Cold rolled steel plate for press forming having superior cold formability and artificial age hardenability and its using method
JPS5779122A (en) * 1980-11-01 1982-05-18 Nippon Steel Corp Production of ferritic stainless steel sheet of superior deep draw ability
JPH0753885B2 (ja) * 1989-04-17 1995-06-07 新日本製鐵株式会社 磁気特性の優れた一方向性電磁鋼板の製造方法
FR2728490B1 (fr) * 1994-12-21 1997-01-24 Lorraine Laminage Procede de fabrication d'une bande d'acier destinee a la fabrication par emboutissage et re-emboutissage de recipients en acier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108624741A (zh) * 2017-03-23 2018-10-09 中国科学院金属研究所 兼具高热稳定性、高强度、高塑性的多相twip钢的制备方法
CN108624741B (zh) * 2017-03-23 2019-10-22 中国科学院金属研究所 兼具高热稳定性、高强度、高塑性的多相twip钢的制备方法

Also Published As

Publication number Publication date
DE69807617T2 (de) 2003-07-31
FR2769251B1 (fr) 1999-12-24
EP0906961A1 (de) 1999-04-07
ATE223503T1 (de) 2002-09-15
DE69807617D1 (de) 2002-10-10
US6156131A (en) 2000-12-05
FR2769251A1 (fr) 1999-04-09
CA2246591C (fr) 2007-04-10
ES2181143T3 (es) 2003-02-16
CA2246591A1 (fr) 1999-04-03
PT906961E (pt) 2003-01-31

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