Fading proof process for aluminum alloy electrophoresis titanium gold

An aluminum alloy, anti-fading technology, applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve the problems of reduced oxide film density, reduced heat resistance, difficulty in coloring, etc. Effect

Active Publication Date: 2012-12-12
佛山金兰铝厂有限公司
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  • Abstract
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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 decrea

Method used

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Embodiment Construction

[0013] An aluminum alloy electrophoresis titanium gold anti-fading process of the present invention, its process flow includes degreasing, alkali corrosion, oxidation, electrolytic coloring, medium temperature sealing, hot water washing, electrophoresis and curing, in this embodiment, the time of electrolytic coloring is 7-12 minutes, electrolytic coloring temperature range 25-35 ℃. Because the longer the coloring time, the lower the density of the oxide film, so the coloring time must be shortened. To shorten the time, the concentration of the bath solution must be increased, which increases the cost. Considering the overall consideration, it is most appropriate for us to determine the coloring time within 10 minutes, preferably 9 minutes. In the present embodiment, the formula of electrolytic coloring bath liquid comprises:

[0014] Selenite 5-7g / l,

[0015] Sodium citrate 5-10g / l,

[0016] Tartaric acid 5-10g / l,

[0017] Boric acid 2-5g / l.

[0018] In addition, the temp...

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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...

Claims

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Application Information

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IPC IPC(8): C25D11/22
Inventor 范先才袁学中杨云生
Owner 佛山金兰铝厂有限公司
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