With the increasing application of aluminum and aluminum alloys, as well as the demand for decoration and functionality, the demand for electrolytic coloring is also increasing. The color coatings of aluminum and aluminum alloy electrolytic coloring technology have excellent wear resistance, light resistance, heat resistance, and corrosion resistance with various chemical properties, and are more used for various decorations and protections on building profiles. Due to the development and application of solar energy and the diversification of daily necessities, as well as the popularity of artworks and artworks,
The color and luster of aluminum plates and aluminum alloy finished products puts forward very clear purposes and requirements. For example, the curtain walls of large-scale urban renovation buildings are too strong, which will affect the awareness of pedestrians and air traffic and cause optical pollution. Indoor vessels or plain aluminum items are decorated with more gold, copper or bronze, look for more color options. The heat absorption plate of the solar water heater needs to be dark black, etc.
In the long run, with the continuous addition of aluminum and aluminum alloy parts and the continuous increase in output, aluminum electrolytic color technology will be more widely developed and applied.
According to its color characteristics, electrolytic coloring can be divided into two colors and two colors. In a step called color development or spontaneous color development, that is, aluminum and aluminum alloys in organic acids are anodized and the oxide film is colored. There are also specific colors for aluminum alloys in anodizing. There are three methods: 1. One is the non-ferrous alloy electrolysis method in the acidic electrolyte of the anodizing coloring machine, also called the natural coloring method, and the other is the electrolytic coloring of aluminum alloy organic acid solution. No matter how it is colored, it is an electrolytic coloring and a one-step process for aluminum alloys in various electrolyte solutions. The one-step method of electrolytic coloring is relatively narrow, the operating conditions are strict, and it is messy.
The color of the film is greatly affected by the data type, electrolyte composition and operating skills, so it is subject to certain limitations.
The two-step coloring method is the process of aluminum anodizing coloring, which is divided into two steps. First, aluminum and aluminum alloy parts are first oxidized by anodizing. Then color, the color method is divided into two types: color adsorption and electrolytic coloring.
Therefore, electrolytic coloring and treatment of aluminum and aluminum alloys can be divided into three major categories, namely adsorption coloring, electrolytic coloring and natural hair dyeing.
