WO2007086085A1 - Procede de production de feuillards d'acier appropries pour un revetement de surface resistant a l'oxydation - Google Patents

Procede de production de feuillards d'acier appropries pour un revetement de surface resistant a l'oxydation Download PDF

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Publication number
WO2007086085A1
WO2007086085A1 PCT/IT2006/000043 IT2006000043W WO2007086085A1 WO 2007086085 A1 WO2007086085 A1 WO 2007086085A1 IT 2006000043 W IT2006000043 W IT 2006000043W WO 2007086085 A1 WO2007086085 A1 WO 2007086085A1
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WO
WIPO (PCT)
Prior art keywords
thickness
reduction
strips
type
cold 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.)
Ceased
Application number
PCT/IT2006/000043
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English (en)
Inventor
Giovanni Arvedi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CNA2006800518160A priority Critical patent/CN101336305A/zh
Priority to BRPI0621257A priority patent/BRPI0621257A2/pt
Priority to JP2008551961A priority patent/JP2009524526A/ja
Priority to AU2006336815A priority patent/AU2006336815A1/en
Priority to US12/161,675 priority patent/US20100242558A1/en
Priority to PCT/IT2006/000043 priority patent/WO2007086085A1/fr
Priority to CA002636546A priority patent/CA2636546A1/fr
Publication of WO2007086085A1 publication Critical patent/WO2007086085A1/fr
Anticipated expiration legal-status Critical
Ceased 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls

Definitions

  • the present invention relates to a process for manufacturing steel strips adapted to receive a surface coating which is resisting to oxidation by using anti- oxidizing elements such as aluminum, chromium or nickel, copper, etc., and in particular tin for producing tin-plate.
  • anti- oxidizing elements such as aluminum, chromium or nickel, copper, etc.
  • tin for producing tin-plate.
  • for depositing the above- mentioned coating metals use is made of the electrolytic method or, whenever possible, heat treatment methods.
  • the second cold rolling step occurs after annealing with 2-3 stands of the "High-Four" type to bring the strip to the final thickness of 0.14-0.18 mm before tin coating.
  • a plant of this type is schematically shown in fig. 1 and, as already stated, its main limit is the dimensional one, as it extends over very large areas, thus rendering the investment costs particularly high.
  • Object of the present invention is that of providing a medium-productivity process for ultrathin strips adapted to receive an oxidation-resisting surface coating that does not require to be carried out in plants extended over too large areas, and consequently involving high investments costs.
  • Figure 1 schematically shows the portions of a high productivity plant and relevant processing steps for obtaining a steel strip ready to be surface coated, according to the prior art, as above discussed;
  • Figure 2 schematically shows a "thin-slab” plant for producing hot strips as starting material for the subsequent processes, particularly according to WO 2004/026497, as already described above;
  • Figure 3 schematically shows a plant for carrying out the process according to the invention, downstream of a thin-slab plant of the type according to figure 2.
  • the strips used as a substrate for the surface coating, preferably for producing tin-plate are ultrathin hot strips of 0.7-1.0 mm thickness, obtained from a "thin-slab" plant, such as of the type schematically shown in figure 2.
  • the process according to the invention is illustrated in its processing steps downstream of the production of hot rolled strip having the desired thickness as above indicated, being obtained e.g. according to process and plant of figure 2.
  • the strip having a thickness of 0.7-1.0 mm, after pickling is fed to a cold rolling mill of the Sendzimir 6Zhi type, in particular with three stands as illustrated, which is very compact and consequently needs to occupy more reduced area, thus limiting the investment costs.
  • the strip thickness is brought to the desired final value and thereafter the strip is subjected to either an endless or batch annealing and skin-pass with return to the same cold rolling mill.
  • the Sendzimir stands are more compact and allow more sensible reductions, as much smaller rolls are used to this effect, whereby the contact cross-section is reduced and the specific pressure, for the same value of applied force, is higher.
  • the prior art had used (while adopting the corresponding processes) plants in which, like in figure 1, the hot rolling mills are provided with a plurality of stands of the High-Four tandem-type.
  • Sendzimir stands should not be used since, due to their reduced cross-section of contact, they would have enhanced the geometrical defects of the strip, instead of reducing the same, such as under the aspect of parallelism.
  • the Sendzimir 6Zhi rolling mill with three stands can be used, starting again from a hot rolled strip having thickness comprised between 0.7 and 1.0 mm to produce either directly the tin-plate strips of SR type upon simple reduction, after cold rolling up to 0.14-0.18 mm, annealing and skin- passing, or those of the DR type, half-raw or upon double reduction, preferably but not exclusively cold rolled until a thickness of 0.20-0.25 mm, annealed and thereafter reduced to a thickness ⁇ 0.18 mm with reductions of about 30%.

Landscapes

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

Abstract

L'invention concerne un procédé de production de feuillards d'acier pouvant recevoir de manière appropriée un revêtement de surface résistant à l'oxydation, notamment un étamage, de productivité moyenne, dont l'exécution ne nécessite ni grandes installations occupant des surfaces étendues, ni grands investissements économiques. Le procédé consiste à: démarrer, avec des feuillards décapés à chaud dont l'épaisseur est supérieure à 0,7 mm, provenant de préférence d'installations de production de brames minces, par une étape unique de laminage à froid réalisée en trois passes au plus grâce à un procédé de type Sendzimir 6Zhi permettant de réduire à froid l'épaisseur à moins de 0,25 mm, suivi d'un recuit. On peut ainsi obtenir des épaisseurs finales inférieures à 0,18 mm, aussi bien par simple réduction nécessitant uniquement des étapes subséquentes d'écrouissage et de finition, que par double réduction réalisée sur un feuillard semi-brut nécessitant des passes subséquentes destinées à réduire l'épaisseur de 30 %.
PCT/IT2006/000043 2006-01-26 2006-01-26 Procede de production de feuillards d'acier appropries pour un revetement de surface resistant a l'oxydation Ceased WO2007086085A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CNA2006800518160A CN101336305A (zh) 2006-01-26 2006-01-26 适宜于抗氧化表面涂层的钢带材的生产方法
BRPI0621257A BRPI0621257A2 (pt) 2006-01-26 2006-01-26 processo para produzir tiras de aço
JP2008551961A JP2009524526A (ja) 2006-01-26 2006-01-26 酸化防止の表面コーティングに適した鋼板の製造工程
AU2006336815A AU2006336815A1 (en) 2006-01-26 2006-01-26 Process of producing steel strips suitable for an oxidation-resisting surface coating
US12/161,675 US20100242558A1 (en) 2006-01-26 2006-01-26 Process of producing steel strips suitable for an oxidation-resisting surface coating
PCT/IT2006/000043 WO2007086085A1 (fr) 2006-01-26 2006-01-26 Procede de production de feuillards d'acier appropries pour un revetement de surface resistant a l'oxydation
CA002636546A CA2636546A1 (fr) 2006-01-26 2006-01-26 Procede de production de feuillards d'acier appropries pour un revetement de surface resistant a l'oxydation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2006/000043 WO2007086085A1 (fr) 2006-01-26 2006-01-26 Procede de production de feuillards d'acier appropries pour un revetement de surface resistant a l'oxydation

Publications (1)

Publication Number Publication Date
WO2007086085A1 true WO2007086085A1 (fr) 2007-08-02

Family

ID=37027828

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2006/000043 Ceased WO2007086085A1 (fr) 2006-01-26 2006-01-26 Procede de production de feuillards d'acier appropries pour un revetement de surface resistant a l'oxydation

Country Status (7)

Country Link
US (1) US20100242558A1 (fr)
JP (1) JP2009524526A (fr)
CN (1) CN101336305A (fr)
AU (1) AU2006336815A1 (fr)
BR (1) BRPI0621257A2 (fr)
CA (1) CA2636546A1 (fr)
WO (1) WO2007086085A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1027495A (en) * 1962-05-03 1966-04-27 Davy & United Eng Co Ltd Production of tinplate
JPS58110104A (ja) * 1981-12-23 1983-06-30 Kawasaki Steel Corp ステンレス鋼帯冷間圧延におけるビビリ防止方法
WO2004026497A1 (fr) * 2002-09-19 2004-04-01 Giovanni Arvedi Process and production line for manufacturing ultrathin hot rolled strips based n the thin slab technique
EP1662013A1 (fr) * 2004-11-24 2006-05-31 ARVEDI, Giovanni Procédé de fabrication de bande métallique désigné pour un revêtement résistant à l'oxydation

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS607342B2 (ja) * 1978-10-18 1985-02-23 日新製鋼株式会社 カラ−テレビブラウン管用シヤドウマスクの製造方法
JP2695858B2 (ja) * 1988-09-07 1998-01-14 日本冶金工業株式会社 加工性の良好なオーステナイト系ステンレス鋼薄板の製造方法
JPH0615308A (ja) * 1992-07-02 1994-01-25 Kawasaki Steel Corp 冷間圧延用ステンレス予備処理鋼帯の製造方法及び装置
JP2799275B2 (ja) * 1993-02-26 1998-09-17 株式会社日立製作所 メッキ設備及びその運転方法
JP3647932B2 (ja) * 1995-06-21 2005-05-18 新日本製鐵株式会社 イヤリング性の優れた缶用鋼板の製造方法
JP3337966B2 (ja) * 1998-01-21 2002-10-28 株式会社日立製作所 帯状金属板の熱間または温間圧延方法及び熱間または温間圧延設備
JPH11269542A (ja) * 1998-03-24 1999-10-05 Sumitomo Metal Ind Ltd 表面性状に優れたオーステナイト系ステンレス鋼板の製造方法
DE10125082A1 (de) * 2001-05-23 2002-11-28 Bayerische Motoren Werke Ag Ventiltrieb-Vorrichtung für eine Brennkraftmaschine
JP2003342682A (ja) * 2002-03-12 2003-12-03 Jfe Steel Kk 熱処理後の加工性に優れる缶用薄鋼板およびその製造方法ならびにその熱延素材の製造方法
JP4096630B2 (ja) * 2002-05-30 2008-06-04 Ｊｆｅスチール株式会社 冷間タンデム圧延機及びそれを用いた極薄鋼板の冷間圧延方法
WO2004061137A1 (fr) * 2002-12-26 2004-07-22 Nippon Steel Corporation Feuille d'acier plaque en zinc fondu allie presentant une excellente aptitude au traitement et une resistance elevee et procede de fabrication associe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1027495A (en) * 1962-05-03 1966-04-27 Davy & United Eng Co Ltd Production of tinplate
JPS58110104A (ja) * 1981-12-23 1983-06-30 Kawasaki Steel Corp ステンレス鋼帯冷間圧延におけるビビリ防止方法
WO2004026497A1 (fr) * 2002-09-19 2004-04-01 Giovanni Arvedi Process and production line for manufacturing ultrathin hot rolled strips based n the thin slab technique
EP1662013A1 (fr) * 2004-11-24 2006-05-31 ARVEDI, Giovanni Procédé de fabrication de bande métallique désigné pour un revêtement résistant à l'oxydation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MALINGRIAUX J P ET AL: "THE NEW CONTINUOUS COLD ROLLING AND ANNEALING LINE OF UGINE AT ISBERGUES (FRANCE)", CAHIERS D'INFORMATIONS TECHNIQUES DE LA REVUE DE METALLURGIE, REVUE DE METALLURGIE. PARIS, FR, vol. 97, no. 10, October 2000 (2000-10-01), pages 1177 - 1185, XP001124150, ISSN: 0035-1563 *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 215 (M - 244) 22 September 1983 (1983-09-22) *

Also Published As

Publication number Publication date
CN101336305A (zh) 2008-12-31
AU2006336815A1 (en) 2007-08-02
CA2636546A1 (fr) 2007-08-02
US20100242558A1 (en) 2010-09-30
JP2009524526A (ja) 2009-07-02
BRPI0621257A2 (pt) 2016-11-08

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