building materials of laminated ppgi coil cladding color steel sheet color az steel coil1

3 year ago

36 0 

3 year

Product details

The main purpose of pre-treatment process is to remove grease and impurities on the surface of the strip steel, and to form a chemical conversion film on the surface of the steel plate through passivation, in order to improve the adhesion between the coating and the strip steel substrate and the corrosion resistance of the strip steel. The pre-treatment process is: degreasing → brushing → hot water washing → surface adjustment → hot water washing → passivation → drying. Surface adjustment is a surface treatment process added before phosphate or chromate treatment in the production of certain products. The use of weakly acidic agents containing Ni and F ions to spray treat the surface of strip steel is aimed at improving the coating performance and the adhesion ability of the coating type passivation agent, and removing substances such as Al and Pb precipitated at the grain boundaries of the galvanized substrate surface, especially represented by Japan.

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Wuxi Shengshu Metal Co., Ltd.

Audited supplier

3 year

Main Product: Prepainted Steel, PCM VCM , Embossed Steel, ppgi, Home Appliance Steel, Print Steel

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