ATE364732T1 - HEAT TRANSFER LIMITING FLUX AND ITS USE IN GALVANIZING STEEL - Google Patents
HEAT TRANSFER LIMITING FLUX AND ITS USE IN GALVANIZING STEELInfo
- 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
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.
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)
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)
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 |
-
2004
- 2004-12-09 EP EP04817552A patent/EP1694880B1/en not_active Not-in-force
- 2004-12-09 AT AT04817552T patent/ATE364732T1/en not_active IP Right Cessation
- 2004-12-09 WO PCT/EP2004/014154 patent/WO2005056867A2/en active IP Right Grant
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 |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |