Aluminum double salt coloring power supply

Coloring power supply is an important auxiliary equipment in the electrolytic coloring process of aluminum profile surface treatment, and its performance plays a crucial role in the yield of aluminum coloring. By applying the control and change of the current waveform to improve the coloring effect, it has been a major issue for professionals in the aluminum profile surface treatment industry. With regard to this aspect of the study, Japan and South Korea are at the forefront and are constantly introducing coloring power supplies for various waveforms.

In the double salt coloring process, the coloring power supply generally uses AC sine waves. Electrolytic coloring generally causes metal salt ions to be reduced and precipitated at the bottom of the oxide film in the negative cycle of AC, and various colors appear due to the light scattering effect of the deposits. The amount of metal deposited depends on the time of energization and the amount of energization. Therefore, the change of AC negative periodic waveforms has a direct effect on coloration. The asymmetry developed by the company with a negative cycle of 1:2 or 1:3 is significantly more than the 1:1 sine wave negative cycle. Therefore, the coloring time is significantly faster than the sine wave. However, it is not a 2 or 3 times relationship because the coloring time is related to the formulation of the bath solution and the structure of the tank body. However, in practical use, the coloring speed is at least 10% lower than the conventional sine wave.

This kind of waveform can improve the coloring speed and it should be better understood. This is also a major feature of this product, but the more important point is that this type of waveform forms a background color that is better than that of a 1:1 sine wave. Be clear. In the customer's use, there is a clear difference between the same material with 1:1 wave coloration and 1:3 coloration. The color of 1:1 aluminum is somewhat dark, while the 1:3 background is clean and clear. This difference in color sensation is due to the fact that when the metal salt precipitates in the oxide pores, the precipitated crystals are denser and have stronger adhesion at a 1:3 waveform. Therefore, the color sensation is different from that of a conventional sine wave. In the use of the vertical oxidation line, it was found that the color difference between the upper and the lower material was significantly less than the 1:1 sine wave. It can also be indirectly explained that the effect of the 1:3 waveform on the formation of coloration is different from that of the 1;1 waveform.

The colored power supply can output DC, 1:1 AC (symmetric waveform), AC (1:2 or 1:3) continuous asymmetric waveforms.

Applicable to double salt and single salt coloring process, strong compatibility. It can meet the uniform production of light to dark materials.