Details of galvanizing (chromate)
Galvanization (various chromate treatment)
The reason why galvanization is excellent as a rust preventive film for iron and steel substrates is that zinc is electrochemically positive for the iron substrate, and the iron substrate is exposed due to film defects (scratches, cracks, pinholes, etc.). Even if it is, zinc itself has the property of sacrificing corrosion and preventing the formation of red rust on iron.
Galvanization has been a rapidly popular plating process since it was proven to be relatively inexpensive and the durability of zinc-plated and colored chromate-treated products applied to weapons during World War II in the 1940s.
Galvanized films are rarely used as they are plated, and are often used as finished products only after chromate treatment.
Therefore, the current situation is that the recognition as a post-treatment of chromate = zinc plating is low.
Zinc plating is a treatment that not only gives a beautiful appearance by chromate treatment, but also significantly improves color resistance.
There are colored chromate (chromate), glossy chromate (unichrome), black chromate, green chromate, etc. in the chromate film, and they are used properly for the purpose of corrosion resistance.
We can choose between hexavalent chromate and trivalent chromate.
[Film hardness] Hv60-120
[Standard film thickness] 5 to 10 μm
Iron, stainless steel, aluminum, copper / copper alloys and other metal materials,
Please contact us from the inquiry form for resin materials.
It can process up to 4000 x 1000 x 500 mm.
Please contact us for size details.
Connection Co., Ltd.
Please feel free to contact us for plating, coating, polishing, heat treatment, etc.
Consultations and quotations are free.
4-202-5 Shizugaoka, Fukui City, Fukui Prefecture 910-3635 (Japan)