EP 2458022 B2 20240117 - Method of galvanising a steel strip in a continuous hot dip galvanising line
Title (en)
Method of galvanising a steel strip in a continuous hot dip galvanising line
Title (de)
Verfahren zum Verzinken eines Stahlstreifens in einer kontinuierlichen Feuerverzinkungsanlage
Title (fr)
Procédé de galvanisation de bande d'acier dans une ligne de galvanisation à chaud en continu
Publication
Application
Priority
EP 10193219 A 20101130
Abstract (en)
[origin: EP2458022A1] Method of galvanizing a steel strip in a continuous hot dip galvanizing line comprising a direct fired furnace section or non oxidising furnace and a subsequent radiant tube furnace section, the method comprising injecting a gas mixture of nitrogen and air or a gas mixture of nitrogen and oxygen into the galvanizing furnace by a nozzle system to cause one or both of the steel strip surfaces to oxidise in a controlled manner 1. in the direct fired furnace section or non oxidising furnace, wherein the direct fired furnace section is operated in a substantially non-oxidising manner or in the connection chamber between the direct fired furnace section or non-oxidising section and radiant tube section and 2. before the radiant tube section, the method further comprising at least partly reducing the oxide back to iron in the radiant tube furnace section and the method further comprising hot dip galvanizing the steel strip in the hot dip galvanizing line, wherein the gas mixture comprises an oxygen content of 0.5 to 10%.
IPC 8 full level
C21D 1/70 (2006.01); C21D 1/52 (2006.01); C21D 1/76 (2006.01); C21D 9/56 (2006.01); C21D 9/58 (2006.01); C23C 2/00 (2006.01); C23C 2/02 (2006.01)
CPC (source: EP US)
C21D 1/52 (2013.01 - EP); C21D 9/56 (2013.01 - EP); C21D 9/561 (2013.01 - EP); C21D 9/58 (2013.01 - EP); C23C 2/0038 (2022.08 - EP US); C23C 2/0222 (2022.08 - EP US); C21D 1/70 (2013.01 - EP); C21D 1/76 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2458022 A1 20120530; EP 2458022 B1 20130724; EP 2458022 B2 20240117; ES 2425916 T3 20131018
DOCDB simple family (application)
EP 10193219 A 20101130; ES 10193219 T 20101130