Galvanizing alloy and process for reactive steels

Details Galvanizing alloy and process for reactive steels Galvanizing alloy and process for reactive steels

C - Chemistry, Metallurgy

23

C

C23C 2/06 (2006.01) C22C 18/00 (2006.01) C23C 2/02 (2006.01) C23C 2/26 (2006.01)

Patent

CA 2161393

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 0.003% and one of vanadium in the amount of at least 0.06%, preferably at least 0.08%, titanium in the amount of at least 0.03%, preferably at least 0.05%, or vanadium with titanium in the amount of at least 0.02% of each of vanadium and titanium and at least 0.04%, preferably at least 0.06%, of vanadium and titanium collectively. The process also includes a dilute zinc-ammonium chloride pre- flux composition containing about 15 - 20% ZnNH4Cl. The process is suitable for galvanizing a wide range of steels including reactive steels containing up to about 0.3% by weight silicon with the single element addition and up to at least 0.5% by weight silicon when both elements are added together.

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