EP1662013B1 - Process of producing steel strips suitable for an oxidation-resisting surface coating - Google Patents

Process of producing steel strips suitable for an oxidation-resisting surface coating Download PDF

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Publication number
EP1662013B1
EP1662013B1 EP04425880A EP04425880A EP1662013B1 EP 1662013 B1 EP1662013 B1 EP 1662013B1 EP 04425880 A EP04425880 A EP 04425880A EP 04425880 A EP04425880 A EP 04425880A EP 1662013 B1 EP1662013 B1 EP 1662013B1
Authority
EP
European Patent Office
Prior art keywords
thickness
reduction
type
strips
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.)
Expired - Lifetime
Application number
EP04425880A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1662013A1 (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
Priority to EP04425880A priority Critical patent/EP1662013B1/en
Priority to DE602004005875T priority patent/DE602004005875T2/de
Priority to ES04425880T priority patent/ES2285400T3/es
Priority to SI200430331T priority patent/SI1662013T1/sl
Priority to PT04425880T priority patent/PT1662013E/pt
Priority to DK04425880T priority patent/DK1662013T3/da
Priority to AT04425880T priority patent/ATE359378T1/de
Priority to PL04425880T priority patent/PL1662013T3/pl
Application filed by Individual filed Critical Individual
Publication of EP1662013A1 publication Critical patent/EP1662013A1/en
Application granted granted Critical
Publication of EP1662013B1 publication Critical patent/EP1662013B1/en
Priority to HR20070274T priority patent/HRP20070274T3/xx
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/36—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling

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.
  • 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

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Chemically Coating (AREA)
  • Heat Treatment Of Steel (AREA)
EP04425880A 2004-11-24 2004-11-24 Process of producing steel strips suitable for an oxidation-resisting surface coating Expired - Lifetime EP1662013B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
ES04425880T ES2285400T3 (es) 2004-11-24 2004-11-24 Proceso de fabricacion de bandas de acero adecuadas para un revestimiento superficial resistente a la oxidacion.
SI200430331T SI1662013T1 (sl) 2004-11-24 2004-11-24 Postopek izdelave jeklenih trakov prilagojenih zananos proti rjavenju odporne prevleke
PT04425880T PT1662013E (pt) 2004-11-24 2004-11-24 Processo de produção de tiras de aço adequadas para um revestimento de superfície resistente à oxidação.
DK04425880T DK1662013T3 (da) 2004-11-24 2004-11-24 Fremgangsmåde til fremstilling af stålbånd egnet til en oxidationsbestandig overfladebelægning
EP04425880A EP1662013B1 (en) 2004-11-24 2004-11-24 Process of producing steel strips suitable for an oxidation-resisting surface coating
DE602004005875T DE602004005875T2 (de) 2004-11-24 2004-11-24 Verfahren zum Herstellen von Metallband geeignet zur oxydationsbeständigen Oberflächenbeschichtung
AT04425880T ATE359378T1 (de) 2004-11-24 2004-11-24 Verfahren zum herstellen von metallband geeignet zur oxydationsbeständigen oberflächenbeschichtung
PL04425880T PL1662013T3 (pl) 2004-11-24 2004-11-24 Sposób wytwarzania taśm stalowych nadających się do przeciwutleniającego powlekania powierzchniowego
HR20070274T HRP20070274T3 (en) 2004-11-24 2007-06-14 Process of producing steel strips suitable for an oxidation-resisting surface coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04425880A EP1662013B1 (en) 2004-11-24 2004-11-24 Process of producing steel strips suitable for an oxidation-resisting surface coating

Publications (2)

Publication Number Publication Date
EP1662013A1 EP1662013A1 (en) 2006-05-31
EP1662013B1 true EP1662013B1 (en) 2007-04-11

Family

ID=34932909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04425880A Expired - Lifetime EP1662013B1 (en) 2004-11-24 2004-11-24 Process of producing steel strips suitable for an oxidation-resisting surface coating

Country Status (9)

Country Link
EP (1) EP1662013B1 (pl)
AT (1) ATE359378T1 (pl)
DE (1) DE602004005875T2 (pl)
DK (1) DK1662013T3 (pl)
ES (1) ES2285400T3 (pl)
HR (1) HRP20070274T3 (pl)
PL (1) PL1662013T3 (pl)
PT (1) PT1662013E (pl)
SI (1) SI1662013T1 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007086085A1 (en) * 2006-01-26 2007-08-02 Giovanni Arvedi Process of producing steel strips suitable for an oxidation-resisting surface coating
RU2393033C2 (ru) * 2008-05-20 2010-06-27 Открытое акционерное общество "Вятка" Способ производства полос
CN111957750B (zh) * 2020-07-08 2022-03-04 北京科技大学设计研究院有限公司 一种利用质量分析工具进行轧机入口厚度优化的方法

Family Cites Families (3)

* 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
JPS5858232A (ja) * 1981-09-30 1983-04-06 Sumitomo Metal Ind Ltd 熱硬化性を有する合金化亜鉛めつき鋼板の製造法
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

Also Published As

Publication number Publication date
EP1662013A1 (en) 2006-05-31
DE602004005875T2 (de) 2008-01-17
DE602004005875D1 (de) 2007-05-24
SI1662013T1 (sl) 2007-10-31
HRP20070274T3 (en) 2007-07-31
ATE359378T1 (de) 2007-05-15
DK1662013T3 (da) 2007-08-27
PT1662013E (pt) 2007-07-17
ES2285400T3 (es) 2007-11-16
PL1662013T3 (pl) 2007-09-28

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