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Aluminum alloy workpieceblackening treatment method

A blackening treatment, aluminum alloy technology, applied in the field of aluminum alloy processing, can solve the problems of infeasible production cost and production efficiency, and achieve the effect of improving effect, uniform blackening film, and simple operation.

Inactive Publication Date: 2018-06-29
安徽玉成光华铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is feasible for larger workpieces, but we often encounter some smaller workpieces. For such workpieces, it is not feasible to use aluminum anodized and then dyed black in terms of production cost and production efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for blackening an aluminum alloy workpiece, comprising the following steps:

[0017] (1) After the prepared aluminum alloy workpiece is cleaned and treated, it is put into an activation solution for activation treatment, wherein the activation solution is made of the following components in parts by weight: 4 parts of sodium hydroxide, 1 part of ethanolamine, 0.6 parts of ammonium chromate parts, 550 parts of water;

[0018] (2) Put the aluminum alloy workpiece treated in step (1) into the zinc dipping solution, soak for 30 minutes, take it out, and clean the surface, wherein the zinc dipping solution is made of the following components by weight: sodium hydroxide 40 parts, 8 parts of zinc oxide, 4 parts of zinc fluoroborate, 120 parts of water;

[0019] (3) Put the aluminum alloy workpiece treated in step (2) into the blackening solution, soak it for 5 minutes, take it out, and clean the surface to obtain a finished product, wherein the blackening solution is...

Embodiment 2

[0024] A method for blackening an aluminum alloy workpiece, comprising the following steps:

[0025] (1) After cleaning the prepared aluminum alloy workpiece, put it into the activation solution for activation treatment, wherein the activation solution is made of the following components in parts by weight: 6 parts of sodium hydroxide, 2 parts of ethanolamine, 0.7 parts of ammonium chromate parts, 580 parts of water;

[0026] (2) Put the aluminum alloy workpiece treated in step (1) into the zinc dipping solution, soak for 35 minutes, take it out, and clean the surface, wherein the zinc dipping solution is made of the following components by weight: sodium hydroxide 45 parts, 9 parts of zinc oxide, 6 parts of zinc fluoroborate, 130 parts of water;

[0027] (3) Put the aluminum alloy workpiece treated in step (2) into the blackening solution, soak it for 7 minutes, take it out, and clean the surface to obtain a finished product, wherein the blackening solution is made of the fo...

Embodiment 3

[0032] A method for blackening an aluminum alloy workpiece, comprising the following steps:

[0033] (1) After the prepared aluminum alloy workpiece is cleaned and treated, it is placed in an activation solution for activation treatment, wherein the activation solution is made of the following components by weight: 8 parts of sodium hydroxide, 3 parts of ethanolamine, 0.9 parts of ammonium chromate parts, 600 parts of water;

[0034] (2) Put the aluminum alloy workpiece treated in step (1) into the zinc dipping solution, soak it for 40 minutes, take it out, and clean the surface, wherein the zinc dipping solution is made of the following components by weight: sodium hydroxide 50 11 parts of zinc oxide, 7 parts of zinc fluoroborate, 150 parts of water;

[0035] (3) Put the aluminum alloy workpiece treated in step (2) into the blackening solution, soak it for 8 minutes, take it out, and clean the surface to obtain a finished product, wherein the blackening solution is made of t...

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PUM

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Abstract

The invention discloses an aluminum alloy workpieceblackening treatment method, which comprises the following operation steps of (1) after cleaning a formed aluminum alloy workpiece, putting the aluminum alloy workpiece into an activate fluid, and activating; (2) putting the aluminum alloy workpiece treated through the step (1) into a zinc dipping solution, dipping for 30 to 40min, taking out, andcleaning a surface;(3) putting the aluminum alloy workpiece treated through the step (2) into a blackening solution, dipping for 5 to 8min, taking out, cleaning the surface, and obtaining a finishedproduct. The aluminum alloy workpieceblackening treatment method provided by the invention is simple to operate, low in cost, and suitable for treating smaller aluminum alloy workpieces; the processedaluminum alloy workpiece is uniform in blackening film and high in bonding strength.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy processing, and in particular relates to a blackening treatment method for aluminum alloy workpieces. Background technique [0002] In industrial production, aluminum and aluminum alloy workpieces need to be blackened on the surface, usually by anodizing aluminum and then dyeing black. This process is feasible for larger workpieces, but we often encounter some smaller workpieces. For such workpieces, it is not feasible to use aluminum anodized and then dyed black in terms of production cost and production efficiency. . Therefore, there is an urgent need for a chemical blackening process to blacken smaller aluminum workpieces. Contents of the invention [0003] The object of the present invention is to provide a blackening treatment method for aluminum alloy workpieces. [0004] The present invention is achieved through the following technical solutions. [0005] A method for blackenin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/66C23C18/31C23C18/18
CPCC23C22/66C23C18/1834C23C18/31
Inventor 何启华
Owner 安徽玉成光华铝业有限公司
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