We provide galvanization in weakly acidic and alkaline electrolyte. These electrolytes are in these days most popular technologies of galvanizing. They provide a high gloss surface with a thin and ductile layer.<\/p>\n
GALVAN CZ s.r.o. performs galvanizing without passivation or with blue, thick-film or yellow passivation. All passivations are CrVI-free and are based on CrIII solutions. For all types of finishes we offer different kinds of sealings and top-coats.<\/p>\n
Zinc plating is performed on a computer-controlled automatic lines with traceability of all parameters of the plating process.<\/p>\n
Maximum dimensions of parts up to:<\/p>\n
Line Z1 \u00a0 1800 mm x 300 mm x 1050 mm<\/p>\n
Line Z3 \u00a0 2000 mm x 500 mm x 950 mm<\/p>\n
Barrel plating maximum capacity is 80 kg per one barrel.<\/p>\n
Maximum dimensions of parts up to 150 mm and a weight of approximately 0.3 kg<\/p>\n
Standard thickness of zinc coating is 8-15 \u00b5m. We adjust thickness according to customer requirements, but only up to 35 \u00b5m.<\/p>\n
Iron, steel and cast iron products are suitable for galvanizing. The quality of the input material fundamentally affect the appearance of plated parts.<\/p>\n
In order to improve the corrosion resistance the zinc layer is passivated with one of the Cr3+ passivations.<\/p>\n
Thin-layer passivation Cr3+: (blue) 0.08-0.1 \u00b5m on zinc layer. It is used for parts that are less exposed to corrosion.<\/p>\n
Thick-layer passivation Cr3+: (slightly iridescent appearance) 0.2-0.3 \u00b5m on zinc layer. Higher corrosion resistance comparable to yellow chromate. The advantage is that it doesn\u2019t contain Cr6+, but it doesn\u2019t have the self-repairable effect in case of passivation is eroded. It is used as a substitute for yellow chromate.<\/p>\n
Yellow chromate Cr3+: (yellow, rainbow like appearance) 0.2-0.5 \u00b5m on the zinc layer. Higher corrosion resistance.<\/p>\n
To improve the corrosion resistance, sealing can be used as a next step of surface treatment. The sealer is applied in a 2-4 \u00b5m layer. If this sealer is applied on thin- or thick-layer passivation, after drying out, it creates a transparent organic film. This film increases not only the corrosion protection, but also abrasion resistance. On yellow chromated sealer coatings it suppresses iridescent appearance and gains uniform yellowish hue.<\/p>\n
For surface treatment we use chemicals from suppliers Schl\u00f6tter, Atotech, Coventya and Kiesow.<\/p>\n
Requirements for surface treatment are set out in the relevant ISO-DIN standards. GALVAN CZ s.r.o. performs metal surfacing according to global standards for automotive engineering or according to customer specifications.<\/p>\n
The price depends on used technology, area of processed parts,\u00a0 weight of one part, annual quantity and total volume of orders. For more information contact us:<\/p>\n