Fading proof process for aluminum alloy electrophoresis titanium gold

Abstract

The invention discloses a fading proof process for aluminum alloy electrophoresis titanium gold. The process is characterized by comprising degreasing, alkaline etching, oxidation, electrolytic coloring for 7-12 min at 25-35 DEG C, moderate temperature sealing at 45-60 DEG C for 1-3 min, hot water washing, electrophoresis with voltage of 120-140 volt and curing. The electrophoresis titanium section produced by the invention does not show a color shallowing problem after electrophoresis baking or a fading problem in a usage process, and has good popularization value.

Description

technical field [0001] The invention relates to the technical field of production of aluminum alloy profiles, in particular to a process for electrophoresing titanium gold on aluminum alloy profiles. Background technique [0002] At present, there are roughly three types of aluminum alloy electrolytic coloring processes that are widely used. One is stannous sulfate, nickel sulfate single salt or double salt electrolytic coloring. This is a color system from faux steel → champagne → bronze → black. The second is selenite electrolytic coloring, the color system is a color similar to gold, called titanium gold. The last one is permanganate electrolytic coloring, the color is golden yellow. Among the three coloring methods, the difficulty coefficient of selenite coloring is relatively large. The main problem is that it is difficult to color, but after the color is too dark, it cannot be washed and faded, which is completely different from the coloring of stannous sulfate. Th...

AI Technical Summary

Problems solved by technology

The main problem is that it is difficult to color, but after the color is too deep, it cannot be washed and faded, which is completely different from the coloring of stannous sulfate. The second is that the color fades and becomes lighter during the electrophoresis baking process, which makes it difficult to control the production.

However, no matter which method is used, the oxide film will become loose and the density will decrease.

When the colored material is baked by electrophoretic paint, the density of the oxide film decreases and the heat resistance decreases, so it is easy to fade, even during use.

In addition, because the activity of selenium and acid reaction is not strong, once the profile is colored, it cannot be directly faded by washing. Therefore, it is necessary to formulate a new process to solve the problems in the above production process.