(1) Can not let the workpiece on the level when feeding, to tilt a small Angle after feeding. When the workpiece is feeding, the main rod is ten centimeters higher than the secondary rod.
(2) Before the surface treatment, it is generally necessary to remove the oil on the surface, which is what we often say to oil. The common oil raw material is sulfuric acid, of course, there are some occasions is the use of alkaline degreasing agent. The concentration is generally not too high, as far as possible is controlled in the range of 150-160mg/L can be.
(3) Then we want to carry out the alkaline washing on the surface of the aluminum profile. The alkaline washing can remove the oxide film material on the surface of the aluminum profile workpiece, so as to further make the scratches on the surface of the surface of the sag and other defects are processed, so that the surface of the aluminum profile is more smooth.
(4) After alkaline washing, we should wash the water twice, and the water temperature should be controlled at about 30 degrees Celsius, which is a little higher than the normal temperature.
(5) The process of colouring is to add champagne, imitation steel, bronze and pearl black to the aluminum profile to give it a richer visual appearance. The additives we use in this process are stannous sulfate, nickel sulfate and sulfuric acid and so on.
