Gauge 20 Galvalume Steel Coil

Description:

Galvalume steel coil is an important alloy material often used in daily life. Galvalume steel coil is composed of aluminum-zinc alloy structure, which is composed of 55% aluminum, 43% zinc and 2% silicon solidified at a high temperature of 600°C. Its entire structure is composed of aluminum-iron-silicon-zinc, forming a dense quaternary structure. 

Passivation

The passivation remedy of the galvanized layer can restrict the incidence of folding rust (white rust) below humid temperature storage and transportation conditions. But the anti-corrosion normal overall performance of this chemical treatment is limited, and it hinders the adhesion of most coatings. This therapy is generally no longer used on zinc iron alloy coatings. Except for smooth surfaces, as a routine, the manufacturing plant passivates one-of-a-kind types of galvanized coatings.

Oiling
Applying oil can decrease the corrosion of metallic plates underneath humid storage and transportation conditions. After passivation treatment, the metallic plates and strips can be in addition diminished with the resource of making use of oil beneath humid storage conditions. The oil layer have to be succesful to be eradicated with a degreaser that does now now not damage the zinc layer.

Lacquer sealing
By making use of an quite skinny layer of apparent herbal coating film, an greater anti-corrosion effect, especially fingerprint resistance, can be provided. It can beautify lubrication all thru molding and serve as an adhesive layer for subsequent coatings.

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