Surface treatment process for aluminum alloy sections before coloring
A technology of aluminum alloy profiles and processing technology, applied in the direction of surface reaction electrolytic coating, electrolytic coating, coating, etc., can solve the problems affecting the uniformity of aluminum alloy color, the surface of aluminum parts loses luster, and weak corrosion resistance. Achieve the effects of high surface friction coefficient, convenient coloring treatment and strong adhesion
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Embodiment 1
[0024] A process for surface treatment of an aluminum alloy profile before coloring, comprising the following steps:
[0025] (1) Cleaning: After the aluminum alloy profile is dipped in gasoline, add 36g / l of sodium dodecylbenzenesulfonate, 24g / l of fatty alcohol polyoxyethylene ether, 6g / l of triethanolamine, and 2g of nonionic surfactant / l and corrosion inhibitor 2g / l mixed solution, the cleaning temperature is 42℃;
[0026] (2) mechanical grinding and polishing;
[0027] (3) Ultrasonic degreasing treatment: adopt 8 parts of coconut oil alkanolamides, 25 parts of polyoxyethylene fatty alcohol ether vulcanization, and the mixture of 2 parts of self-defoaming emulsifiers is a degreasing agent; Pre-degreasing and main degreasing of aluminum alloy profiles, the operation time of pre-degreasing and main degreasing is 5 minutes;
[0028] (4) Alkali corrosion;
[0029] (5) Primary anodic oxidation: put the aluminum alloy profile after alkali etching into the acid solution tank ...
Embodiment 2
[0034] A process for surface treatment of an aluminum alloy profile before coloring, comprising the following steps:
[0035] (1) Cleaning: After the aluminum alloy profile is dipped in gasoline, put 25g / l of sodium dodecylbenzenesulfonate, 32g / l of fatty alcohol polyoxyethylene ether, 5g / l of triethanolamine, and 3g of nonionic surfactant / l and corrosion inhibitor 1g / l mixed solution, the cleaning temperature is 55℃;
[0036] (2) mechanical grinding and polishing;
[0037] (3) Ultrasonic degreasing treatment: adopt 5 parts of coconut oil alkyl alcohol amide, 30 parts of polyoxyethylene fatty alcohol ether vulcanization, and the mixture of 1 part of self-defoaming emulsifier is degreasing agent; Pre-degreasing and main degreasing of aluminum alloy profiles, the operation time of pre-degreasing and main degreasing is 6 minutes;
[0038] (4) Alkali corrosion;
[0039] (5) Primary anodic oxidation: put the aluminum alloy profile after alkali etching into the acid solution tan...
Embodiment 3
[0044] A process for surface treatment of an aluminum alloy profile before coloring, comprising the following steps:
[0045] (1) Cleaning: After the aluminum alloy profile is dipped in gasoline, add 42g / l of sodium dodecylbenzenesulfonate, 20g / l of fatty alcohol polyoxyethylene ether, 8g / l of triethanolamine, and 1g of nonionic surfactant / l and corrosion inhibitor 3g / l mixed solution, the cleaning temperature is 35℃;
[0046] (2) mechanical grinding and polishing;
[0047] (3) Ultrasonic degreasing treatment: adopt 12 parts of coconut oil alkanolamides, 22 parts of polyoxyethylene fatty alcohol ether vulcanization, and the mixture of 3 parts of self-defoaming emulsifiers is a degreasing agent; Pre-degreasing and main degreasing of aluminum alloy profiles, the operation time of pre-degreasing and main degreasing is 4 minutes;
[0048] (4) Alkali corrosion;
[0049] (5) Primary anodic oxidation: put the aluminum alloy profile after alkali etching into the acid solution tank...
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