EP 1694880 B1 20070613 - HEAT TRANSFER LIMITING FLUX AND ITS USE IN GALVANISING STEEL
Title (en)
HEAT TRANSFER LIMITING FLUX AND ITS USE IN GALVANISING STEEL
Title (de)
DIE WÄRMEÜBERTRAGUNG BEGRENZENDES FLUSSMITTEL UND DESSEN VERWENDUNG BEI DER GALVANISIERUNG VON STAHL
Title (fr)
FLUX LIMITANT LE TRANSFERT DE CHALEUR ET SON UTILISATION DANS LA GALVANISATION DE L'ACIER
Publication
Application
Priority
- EP 2004014154 W 20041209
- EP 03078869 A 20031209
- US 52994603 P 20031217
- EP 04817552 A 20041209
Abstract (en)
[origin: WO2005056867A2] 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.
IPC 8 full level
C23C 2/30 (2006.01); C23C 2/02 (2006.01); C23C 2/06 (2006.01)
CPC (source: EP)
C23C 2/30 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005056867 A2 20050623; WO 2005056867 A3 20051124; AT E364732 T1 20070715; EP 1694880 A2 20060830; EP 1694880 B1 20070613
DOCDB simple family (application)
EP 2004014154 W 20041209; AT 04817552 T 20041209; EP 04817552 A 20041209