Since 1995 ALU-COLOR Company Ltd. has specialized in powder coating of aluminum materials. Since 2001, we also offer varnishing of steel and galvanized materials.
Powder coating of aluminium
Before the actual process of coating of aluminium it’s necessary to perform quality surface pre-treatment of material, i.e. degreasing of material, removal of oxidized layer and application of passivation layers. Without this pretreatment the paint has bad adhesion and surface finish has bad corrosion resistance.
Pretreatment of aluminium in ALU-COLOR Ltd. is performed chemically. Degreasing and deoxidation of surface is done by immersion in a bath Alfideox 74+Alfisid 14 (H2SO4 + surfactant + inhibitors +fluorides). Passivation is done by chrome free pre-treatment by immersion in a bath Alficoat 748 (TiF6 Titanium-II).
After chemical surface pretreatment follows electrostatic powder coating by automatic cabin WAGNER and then stoving of colour in the chamber furnace.
Coated products are inspected, packed and laboratory tests are carried out, see Laboratory trials and tests, and process monitoring.
Detailed descriptions of the realization process see Realization processes of coating of aluminium.
Our supplier of the chemical pretreatment is company IDEAL-Trade Service, Ltd., which supplies chemicals from the German manufacturer Alufinish GmbH & Co. KG.
We use only powder paints of facade quality (if the customer doesn’t want otherwise) from the Austrian manufacturer TIGER Coatings GmbH & Co. KG. and the Swiss manufacturer IGP Pulvertechnik AG.