ATE364732T1 - HEAT TRANSFER LIMITING FLUX AND ITS USE IN GALVANIZING STEEL - Google Patents

HEAT TRANSFER LIMITING FLUX AND ITS USE IN GALVANIZING STEEL

Info

Publication number
ATE364732T1
ATE364732T1 AT04817552T AT04817552T ATE364732T1 AT E364732 T1 ATE364732 T1 AT E364732T1 AT 04817552 T AT04817552 T AT 04817552T AT 04817552 T AT04817552 T AT 04817552T AT E364732 T1 ATE364732 T1 AT E364732T1
Authority
AT
Austria
Prior art keywords
steel
heat transfer
flux
znc12
nh4c1
Prior art date
Application number
AT04817552T
Other languages
German (de)
Inventor
Michael Gilles
Original Assignee
Umicore Nv
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 Umicore Nv filed Critical Umicore Nv
Application granted granted Critical
Publication of ATE364732T1 publication Critical patent/ATE364732T1/en

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
    • C23C2/30—Fluxes or coverings on molten baths

Landscapes

  • Chemical & Material 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)

Abstract

The present invention relates to a water based flux for hot-dip batch galvanising of steel. Steel articles are hereby subjected to rapid heating, in particular when using a zinc-bath composition with a high wetting ability towards steel. It is an aim of the present invention to alleviate the thermal stress problem by using fluxes which, upon dipping, reduce the heat transfer coefficient between the steel and the zinc melt. The invented flux comprises a total of 200 to 600 g/l of ZnC12 and NH4C1, with a NH4C1 to ZnC12 molar ratio of 1.7 to 3.3, and is characterised in that it further comprises 8 to 80 g/l A1C13.
AT04817552T 2003-12-09 2004-12-09 HEAT TRANSFER LIMITING FLUX AND ITS USE IN GALVANIZING STEEL ATE364732T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03078869 2003-12-09
US52994603P 2003-12-17 2003-12-17

Publications (1)

Publication Number Publication Date
ATE364732T1 true ATE364732T1 (en) 2007-07-15

Family

ID=34924029

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04817552T ATE364732T1 (en) 2003-12-09 2004-12-09 HEAT TRANSFER LIMITING FLUX AND ITS USE IN GALVANIZING STEEL

Country Status (3)

Country Link
EP (1) EP1694880B1 (en)
AT (1) ATE364732T1 (en)
WO (1) WO2005056867A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2894255B1 (en) * 2005-12-01 2008-04-04 Electro Rech Sarl HOT GALVANIZATION BATH OF WORKPIECES IN ANY NUANCE OF ANY STEEL
DE102016106617A1 (en) * 2016-03-21 2017-09-21 Fontaine Holdings Nv Hot-dip galvanizing plant and hot-dip galvanizing process
DE102016111725A1 (en) * 2016-06-13 2017-12-14 Fontaine Holdings Nv Process and flux for hot dip galvanizing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2245226A (en) * 1940-01-23 1941-06-10 Robert F Renkin Method of coating metal
GB830258A (en) * 1956-01-10 1960-03-16 Crittall Mfg Co Ltd Galvanizing process
BE795632A (en) * 1972-02-23 1973-08-20 Basf Ag HOT GALVANIZATION FLUX
US3943270A (en) * 1973-03-01 1976-03-09 Foseco International Limited Aqueous flux for hot dip galvanising process
DE2417791C2 (en) * 1974-04-11 1976-04-01 Basf Ag, 6700 Ludwigshafen Flux for hot-dip galvanizing -tinning and -verbleiuhg
JPS6199664A (en) * 1984-10-19 1986-05-17 Kobe Steel Ltd Coating method with zinc-aluminum alloy by hot dipping
LU86339A1 (en) * 1986-03-04 1987-11-11 Foridienne Chimie N V FLUORIDE-FREE FLOW COMPOSITIONS FOR HOT GALVANIZATION IN ALUMINUM ZINC BATHS
PT1003921E (en) * 1997-05-23 2002-12-31 Umicore S A Nv ACO GALVANIZATION LEAGUE AND PROCESS

Also Published As

Publication number Publication date
EP1694880B1 (en) 2007-06-13
WO2005056867A3 (en) 2005-11-24
WO2005056867A2 (en) 2005-06-23
EP1694880A2 (en) 2006-08-30

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Legal Events

Date Code Title Description
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