Hydrophilic aluminum foil for heat exchangers

Feb 20, 2022

Hydrophilic aluminum foil, pretreatment process before hydrophilic aluminum foil coating:

When hydrophilic aluminum foil is used as a heat exchanger, its coating properties such as adhesion, corrosion resistance and hydrophilicity are required to be high during processing and use. In order to ensure the coating performance of hydrophilic aluminum foil, cleaning before coating Preprocessing is especially important. By means of neutral salt spray test, adhesion test and continuous hydrophilicity test, the formulation and optimization control of hydrophilic aluminum foil pretreatment process parameters are analyzed. Fraction), degreasing solution temperature 20~40℃, pH 10~13, hot water cleaning temperature 40~60℃, the cleanliness dyne value of the aluminum foil surface after treatment is ≥56, which can meet the production needs of hydrophilic aluminum foil.



aluminium Hydrophilic aluminum foil for heat exchangers spec:

Alloy: 8006 , 8011 , 8079,3003, 3102,1060 ,1100,1200,1030B etc,
Temper:O, H22, H24, H26
Thickness: 0.08mm~0.25mm .
Width: 15mm~1250mm.
I.D: 75, 150, 200, 300, 400mm.
O.D: 400-1400mm
Surface:


Pretreatment process of Hydrophilic aluminum foil factory:
(1) During the pretreatment process before coating, the concentration of degreasing solution should be controlled at 2% to 5% (mass fraction), the temperature of degreasing solution should be controlled at 20-40 ℃, and the temperature of hot water cleaning should be controlled at 40-60 ℃.
(2) During the coating production process, the pH of the degreasing solution can be detected to maintain the effect of the degreasing solution, and the pH is controlled at 10-13. Before coating, the dyne value of the aluminum foil surface is clean and pretreated, and the dyne value is greater than or equal to 56, which can meet the requirements of coating production.
(3) The sigin process parameters of the pretreatment of the hydrophilic aluminum foil before coating are controlled, and the produced hydrophilic aluminum foil has a uniform surface, strong coating adhesion, good corrosion resistance, and good continuous hydrophilicity, which can meet the needs of different customers. Production demand of hydrophilic aluminum foil.