EP 0710732 B1 19980107 - Method for hot-dip coating without alloying a low interstitial steel plate
Title (en)
Method for hot-dip coating without alloying a low interstitial steel plate
Title (de)
Verfahren zur Heisstauch-Beschichtung ohne Legieren einer Stahlplatte mit einem geringen Gehalt an Zwischengitteratomen
Title (fr)
Procédé de revêtement au trempé et sans alliation d'une tole d'acier à bas interstitiel
Publication
Application
Priority
FR 9413165 A 19941104
Abstract (en)
[origin: EP0710732A1] Interstitial free steel sheet is coated with Al, Zn or Al Zn alloy by dipping the heated steel into a relatively cool bath of molten Al, Zn or alloy and subjecting the dipped steel to a heat treatment of less than 5 mins., pref. around 2 mins., duration where it is first heated quickly to a temp. above 300 degrees C but below the temp. at which the coating would alloy with the steel and then quickly cooling to ambient temp. The heat treatment temp. is 550-625 degrees C for Al or Al alloy, 320-390 degrees C for Zn or Zn alloy and 390-550 degrees C for an alloy of Al and Zn. Prior to dipping the steel is cleaned and recrystallised by heating in a non-oxidising atmosphere. The Al based coating provides a base for subsequent enamelling and the Zn based coating for a paint coating which needs to be baked at over 100 degrees C.
IPC 1-7
IPC 8 full level
C23C 2/28 (2006.01)
CPC (source: EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
EP 0710732 A1 19960508; EP 0710732 B1 19980107; AT E161898 T1 19980115; DE 69501386 D1 19980212; DE 69501386 T2 19980723; ES 2111380 T3 19980301; FR 2726578 A1 19960510; FR 2726578 B1 19961129
DOCDB simple family (application)
EP 95402327 A 19951019; AT 95402327 T 19951019; DE 69501386 T 19951019; ES 95402327 T 19951019; FR 9413165 A 19941104