DE59301528D1 - Process for galvanizing a strip and system for carrying out the process - Google Patents

Process for galvanizing a strip and system for carrying out the process

Info

Publication number
DE59301528D1
DE59301528D1 DE59301528T DE59301528T DE59301528D1 DE 59301528 D1 DE59301528 D1 DE 59301528D1 DE 59301528 T DE59301528 T DE 59301528T DE 59301528 T DE59301528 T DE 59301528T DE 59301528 D1 DE59301528 D1 DE 59301528D1
Authority
DE
Germany
Prior art keywords
layer
strip
iron content
zinc
galvanising
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 - Fee Related
Application number
DE59301528T
Other languages
German (de)
Inventor
Josef Dipl Ing Faderl
Manfred Dipl Ing Maschek
Alois Dipl Ing Stadlbauer
Klaus Dr Dipl Ing Zeman
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.)
Primetals Technologies Austria GmbH
Voestalpine Stahl Linz GmbH
Original Assignee
Voestalpine Stahl Linz GmbH
Voest Alpine Industrienlagenbau GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3496298&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE59301528(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voestalpine Stahl Linz GmbH, Voest Alpine Industrienlagenbau GmbH filed Critical Voestalpine Stahl Linz GmbH
Application granted granted Critical
Publication of DE59301528D1 publication Critical patent/DE59301528D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • C23C2/29—Cooling or quenching

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

In a process for galvanising a strip (1) the strip (1) is continuously coated with zinc, is then, so as to form a Zn-Fe layer, subjected to a heat treatment in a continuous furnace (10, 11), followed by on-line monitoring of the zinc layer, the iron content of the zinc layer being measured and the galvanising operation being controlled as a function of the iron content of the zinc layer. In order to be able to manufacture a strip (1) having a defined layer structure ensuring uniform quality, a value of the iron content of the Zn-Fe layer is determined as a reference input variable, the actual value of the iron content of the Zn-Fe layer is compared with the reference input variable and any system deviation is compensated via a controller (19) by means of a change in the continuous furnace (10, 11) heating output which serves as the manipulated variable (Fig. 1). <IMAGE>
DE59301528T 1992-03-31 1993-03-23 Process for galvanizing a strip and system for carrying out the process Expired - Fee Related DE59301528D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0065492A AT397815B (en) 1992-03-31 1992-03-31 METHOD FOR GALVANIZING A TAPE AND SYSTEM FOR IMPLEMENTING THE METHOD

Publications (1)

Publication Number Publication Date
DE59301528D1 true DE59301528D1 (en) 1996-03-14

Family

ID=3496298

Family Applications (1)

Application Number Title Priority Date Filing Date
DE59301528T Expired - Fee Related DE59301528D1 (en) 1992-03-31 1993-03-23 Process for galvanizing a strip and system for carrying out the process

Country Status (4)

Country Link
EP (1) EP0571353B2 (en)
JP (1) JPH06207297A (en)
AT (2) AT397815B (en)
DE (1) DE59301528D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT405770B (en) * 1997-09-24 1999-11-25 Voest Alpine Ind Anlagen METHOD FOR CONTROLLING A '' GALVANNEALING '' PROCESS
DE10021948B4 (en) * 2000-05-05 2004-02-19 Thyssenkrupp Stahl Ag Process and plant for galvanizing a steel strip
CN1829817B (en) * 2003-07-29 2015-01-07 沃斯特阿尔派因钢铁有限责任公司 Method for producing a hardened steel part
WO2009021279A1 (en) * 2007-08-10 2009-02-19 Bluescope Steel Limited Coating line control

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307968A (en) * 1963-09-03 1967-03-07 Armco Steel Corp Method and apparatus for controlling the alloying of zinc coatings
JPH068791B2 (en) * 1984-02-10 1994-02-02 川崎製鉄株式会社 Measuring method of alloying degree of galvannealed steel sheet
FR2563537A1 (en) * 1984-04-25 1985-10-31 Stein Heurtey Process and device for diffusion annealing for obtaining metal sheets with alloy coating
US4659437A (en) * 1985-01-19 1987-04-21 Tokusen Kogyo Kabushiki Kaisha Method of thermal diffusion alloy plating for steel wire on continuous basis
JPH01252761A (en) * 1987-12-08 1989-10-09 Kawasaki Steel Corp Sheet temperature controller in alloying furnace for hot-dip galvanization
JPH0637702B2 (en) * 1988-09-29 1994-05-18 川崎製鉄株式会社 Fuel control method for hot dip galvanizing alloy furnace
JP2904891B2 (en) * 1990-08-31 1999-06-14 日新製鋼株式会社 Online alloying degree measuring device for galvanized steel sheet

Also Published As

Publication number Publication date
ATE133717T1 (en) 1996-02-15
ATA65492A (en) 1993-11-15
EP0571353A2 (en) 1993-11-24
EP0571353B2 (en) 2000-01-26
EP0571353B1 (en) 1996-01-31
EP0571353A3 (en) 1994-01-26
AT397815B (en) 1994-07-25
JPH06207297A (en) 1994-07-26

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings
8339 Ceased/non-payment of the annual fee