[China Aluminum Network] The treatment process for aluminum curtain wall can be divided into two methods, one is anodizing, and the other is electrostatic spraying. Anodized oxide film is generally more than 12μ, the color is only bronze and white, the color is monotonous, more serious drawback is the color of each aluminum plate surface shades are different, many pieces of curtain wall plate together to form a curtain wall overall effect Very ugly. This disadvantage can be said to be impossible to eliminate, not because of the production technology, but because the aluminum plate is not a batch number, chemical composition, there are small differences, plus the electrolytic tank current density and other factors can not be exactly the same, so The number of colors after oxidation is different, and the single leaflets may not be obvious. Therefore, aluminum surface treatment of aluminum curtain walls must not be anodized.
Another method of surface treatment of curtain wall aluminum panels is electrostatic spraying. Spraying is divided into powder spraying and liquid spraying. Powder spray material is mainly: Polyurethane, poly swell resin, epoxy resin and other materials with high color retention pigments, can get dozens of different colors of spray powder. The spray powder, resistant to impact abrasion, under the impact of 50 kg, aluminum plate deformation, spray coating without cracks, no loss of intact layer, anti-dilution acid and mortar. The shortcomings of long-term exposure to UV rays, easy to produce a few years later the difference in the color of the yin and yang. Spray powder produced by many domestic manufacturers, the weight difference is very large, and some powder containing gold shavings after the powder hanging on the wall, with the sun angle changes, day and evening changes, the wall color shades are different, The use of powder spray coating has attracted attention.
The type of ball we can provide covers trunnion type ball, floating type ball, stem ball, three way type ball, special type ball etc. The ball size covers from 3 inch to 48 inch matching with pressure from class 150 to 2500lb. The ball material covers carbon steel, stainless steel, duplex steel, such as A105, F6A, F304, F316, F51, Inconel etc. The ball surface treatment include chemical nickel plating, Stellite, Inconel ect with high hardness, abrasion proof and anti-corrosion which can be according to the requirements of the customer.
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