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Process for coloring aluminum sections with pure black pigment

An aluminum profile, black material technology, applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve the problems of difficult deposition to the bottom, unstable color, etc., achieve uniform color and easy adjustment, and increase electrophoresis. Ability, Analysis, and Controllable Effects

Active Publication Date: 2012-10-31
肇庆新亚铝铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen from the electrode potential φ that, in the process of electrification, compared with tin salt coloring, Sn 2+ can be deposited to the bottom through the long oxide film tube, and Ni 2+ It is more difficult to deposit to the bottom, thus making the color unstable

Method used

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  • Process for coloring aluminum sections with pure black pigment
  • Process for coloring aluminum sections with pure black pigment
  • Process for coloring aluminum sections with pure black pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The method of this embodiment includes:

[0032] Put the oxidized aluminum profile into the anode of the coloring tank for electrolysis, and then put the oxidized aluminum profile in the cathode for DC coloring treatment to make Ni 2+ Into the pores of the oxide film and deposited to the bottom, the direct current coloring treatment includes the following steps in sequence:

[0033] 1) Soak the oxidized aluminum profile in the colorant in the coloring tank for 60 seconds, and then apply positive voltage to make the positive voltage rise from 0 to 18.5v within 4 seconds for 6 seconds, then stop energizing for 1 second, and then turn on again Negative voltage, so that the negative voltage rises from 0 to 20v within 25 seconds and lasts for 48 seconds;

[0034] 2) Turn on the positive voltage, so that the positive voltage rises to 18v within 12 seconds, and last for 15 seconds, then stop the power supply for 1 second, and then turn on the negative voltage, so that the neg...

Embodiment 2

[0042] The method of this embodiment includes:

[0043] Put the oxidized aluminum profile into the anode of the coloring tank for electrolysis, and then put the oxidized aluminum profile in the cathode for DC coloring treatment to make Ni 2+ Into the pores of the oxide film and deposited to the bottom, the direct current coloring treatment includes the following steps in sequence:

[0044] 1) Soak the oxidized aluminum profile in the colorant in the coloring tank for 61 seconds, and then apply positive voltage to make the positive voltage rise from 0 to 18.5v within 4 seconds for 7 seconds, then stop energizing for 1 second, and then turn on again Negative voltage, so that the negative voltage rises from 0 to 20v within 23 seconds and lasts for 50 seconds;

[0045] 2) Turn on the positive voltage, so that the positive voltage rises to 18v within 12 seconds, and last for 15 seconds, then stop the power supply for 1 second, and then turn on the negative voltage, so that the neg...

Embodiment 3

[0053] The method of this embodiment includes:

[0054] Put the oxidized aluminum profile into the anode of the coloring tank for electrolysis, and then put the oxidized aluminum profile in the cathode for DC coloring treatment to make Ni 2+ Into the pores of the oxide film and deposited to the bottom, the direct current coloring treatment includes the following steps in sequence:

[0055] 1) Soak the oxidized aluminum profile in the coloring agent in the coloring tank for 62 seconds, and then apply positive voltage to make the positive voltage rise from 0 to 18.5v within 4 seconds for 8 seconds, then stop energizing for 1 second, and then turn on again Negative voltage, so that the negative voltage rises from 0 to 20v within 25 seconds and lasts for 48 seconds;

[0056] 2) Turn on the positive voltage, so that the positive voltage rises to 18v within 12 seconds, and last for 15 seconds, then stop the power supply for 1 second, and then turn on the negative voltage, so that t...

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Abstract

The invention discloses a process for coloring aluminum sections with pure black pigment. The process is mainly used in coloring of aluminum alloy sections after anodic oxidation. A coloring producing process is adjusted, nickel salt deposition in oxidation film holes is changed, then the pure black pigment for coloring of aluminum section after anodic oxidation is produced through a electrolytic coloring single nickel salt coloring process, and a tradition that the anodic oxidation pure black pigment cannot be produced through the electrolytic coloring single nickel salt coloring process is broken.

Description

technical field [0001] The invention relates to the technical field of coloring of aluminum profiles, in particular to a process for applying pure black material with a single nickel salt injection method after anodic oxidation of aluminum profiles. Background technique [0002] Electrolytic coloring of aluminum profiles is divided into two categories: alternating current and direct current coloring. The direct current coloring is mainly nickel salt, generally called single nickel salt direct current coloring; the alternating current coloring is mainly tin salt and nickel-tin mixed salt. The single nickel salt direct current coloring process is divided into two types: the Unical coloring method and the summation method. Among them, the single nickel salt coloring of the Sumika method has the following characteristics: using H 3 BO 3 As a buffer to stabilize the pH value of the bath, but at 25 ° C 3 BO 3 The dissociation constant Ka in water is only 5.8×10 -10 (while H ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/22
Inventor 巫赐建邬香林林丹苹
Owner 肇庆新亚铝铝业有限公司
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