EP 0996763 A1 20000503 - GALVANIZING OF REACTIVE STEELS
Title (en)
GALVANIZING OF REACTIVE STEELS
Title (de)
FEUERVERZINKEN VON REAKTIONSFÄHIGEM STAHL
Title (fr)
GALVANISATION DES ACIERS REACTIFS
Publication
Application
Priority
- CA 9800506 W 19980522
- US 87016497 A 19970606
Abstract (en)
[origin: WO9855664A1] An alloy and a process for the galvanizing of steels containing silicon by an immersion galvanization process, the alloy comprising a zinc alloy of commercial purity having, by weight, aluminum in the amount of at least 0.001 %, tin in the amount of about 0.5 % to about 2 %, and one of vanadium in the amount of at least 0.02 %, preferably 0.05 % to 0.12 %, titanium in the amount of at least 0.03 %, preferably 0.06 % to 0.1 %, or vanadium with titanium in the amount of at least 0.02 % of vanadium and at least 0.01 % of titanium, for at least 0.03 %, preferably 0.05 % to 0.15, of vanadium and titanium collectively, the balance zinc containing up to 1.3 wt.% lead. This alloy can enhance zinc-nickel alloy baths containing a normal operating range of 0.05 % to 0.08 % nickel to a maximum of 0.1 % nickel. An embodiment of the allow composition for zinc-nickel alloy baths may contain vanadium with nickel in the amount of at least 0.02 % vanadium and at least 0.02 % nickel to a maximum of 0.15 % vanadium and nickel collectively. Titanium may be added in an amount of at least 0.01 % titanium to a maximum of 0.2 % vanadium, nickel and titanium. A further embodiment of the alloy composition for use in a zinc alloy bath is comprised of aluminum in the amount of at least 0.001 %, tin in the amount of about 0.5 % to about 2 %, vanadium in the amount of 0.02 % to 0.12 %, bismuth in the amount of 0.05 % to 0.5 %, preferably 0.05 % to 0.1 %, and the balance zinc. The process is suitable for galvanizing a wide range of steels including reactive steels. The maximum silicon level controlled varies from 0.5 % to 1 % depending on the combination and amounts of tin, vanadium and titanium in the alloy.
IPC 1-7
IPC 8 full level
C22C 18/00 (2006.01); C23C 2/06 (2006.01)
CPC (source: EP)
C22C 18/00 (2013.01); C23C 2/06 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IT LI NL PT SE
DOCDB simple family (publication)
WO 9855664 A1 19981210; AT E263850 T1 20040415; AU 730209 B2 20010301; AU 7517198 A 19981221; CA 2293495 A1 19981210; CA 2293495 C 20060103; DE 69823032 D1 20040513; DE 69823032 T2 20050428; EP 0996763 A1 20000503; EP 0996763 B1 20040407; ES 2217555 T3 20041101
DOCDB simple family (application)
CA 9800506 W 19980522; AT 98922555 T 19980522; AU 7517198 A 19980522; CA 2293495 A 19980522; DE 69823032 T 19980522; EP 98922555 A 19980522; ES 98922555 T 19980522