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ZINGA COLD GALVANIZING COMPOUND – 10 Kg (22.04 Lbs) (126.63 US fl oz) 1 Gal
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ZINGA COLD GALVANIZING COMPOUND – 10 Kg (22.04 Lbs) (126.63 US fl oz) 1 Gal
It cannot be stressed strongly enough that the key to Zinga’s long life is in the thorough preparation of the steel substrate to the correct specification. Please always follow the appropriate Zinga UK specification in conjunction with the relevant Technical Data Sheets. (TDS). The following information will give a general guide to the coating and its application.
Marine structures
Old or worn galvanising, thermally sprayed zinc (TSZ) or old Zinga
New steel
New galvanised steel
Cast-iron
Aluminium alloys
Note 1: The term “high pressure” means a minimum water-pressure of 10,000psi. Any pressures below this level will not totally remove engrained chlorides.
Note 2: The grit used on all structural steelwork must comply with 50µm and 80µm depending on the type of application). The chosen grit should always be able to achieve a blast roughness of 12.5 to 15 microns. It should be noted that UHP Blasting does not create a profile and should therefore never be used as the sole means of surface preparation. UHPAB is an excellent form of blast-cleaning for marine structures as it removes all crustacean growth, scale, engrained chlorides and invisible contaminants.
Once dried, the Zinga film requires exposure to fresh air, carbon dioxide and moisture to become fully cured. The natural porosity of the coating is dramatically reduced as curing takes place, and Zinga continues to harden for several weeks after application.
It is very important to note that before exposure to a saline environment (i.e. submerged in salt water or placed in a salt spray zone) all zinganised surfaces will require saturation with fresh water for a minimum of two hours to properly seal them. If the coating is unlikely to be immediately exposed to a salt atmosphere then exposure to rainwater or heavy overnight condensation for a couple of days will have the same sealing effect. Zinga can also be forced dried using Infrared drying systems.
Approximate Drying Times (45µm DFT) @ 20C: