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Constant-temperature oxidation lake blue coloring method for copper alloy

A copper alloy, blue technology, applied in the direction of metal material coating process, etc., can solve the problems of uneven coloring thickness, easy falling off of film layer, short service life of coloring liquid, etc., to achieve uniform and beautiful appearance color, good effect, Easy-to-use effects

Inactive Publication Date: 2021-03-05
AVIC STANDARD PARTS MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Metal copper and its alloy coloring is a new type of surface treatment process that has been developed in recent years. , resulting in various shades of color, including yellow, orange, red, purple, blue, green, black, cyan, bronze, etc., but the electrolysis method consumes a lot of power and requires large equipment
In the prior art, there are many kinds of coloring processes, but there are many problems as follows: the formula components are complex, the coloring treatment time is long, the coloring effect is poor, the film layer is easy to fall off, the service life of the coloring solution is short, and the coloring thickness is uneven

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A method for copper alloy constant temperature oxidation lake blue coloring is characterized in that it comprises the following steps:

[0013] (1) Prepare the coloring solution: first weigh 15g of lead carbonate and place it in a beaker with a capacity of 1L, add 200mL of deionized water and stir to dissolve, then measure 35mL of acetic acid and slowly stir into the solution. At this time, the solution is milky white. Set aside for 30 minutes, then weigh 45g of sodium thiosulfate and add it to the solution after standing, stir to dissolve it, and leave it for 60 minutes to obtain the coloring solution;

[0014] (2) Copper alloy pretreatment: first measure 40g of oil powder LCX-52 (industrial grade) and dilute to 1L with water, heat the copper alloy to 50°C and place the copper alloy in the degreasing liquid for ultrasonic degreasing, take it out after 30s Wash with deionized water, then weigh 90g of chromic anhydride and 10mL of sulfuric acid, add water to dilute to 1L...

Embodiment 2

[0017] A method for copper alloy constant temperature oxidation lake blue coloring is characterized in that it comprises the following steps:

[0018] (1) Prepare the coloring solution: First weigh 17.5g of lead carbonate and place it in a beaker with a capacity of 1L, add 200mL of deionized water and stir to dissolve, then measure 37.5mL of acetic acid and slowly stir into the solution. At this time, the solution is milky white. It was left to stand for 30 minutes, then weighed 52.5g of sodium thiosulfate and added to the solution after standing, stirred to dissolve it, and left to stand for 60 minutes to obtain the coloring solution;

[0019] (2) Copper alloy pretreatment: first measure 50g of oil powder LCX-52 (industrial grade) and dilute to 1L with water, heat the copper alloy to 55°C and place the copper alloy in the degreasing liquid for ultrasonic degreasing, take it out after 45s Wash with deionized water, then weigh 105g of chromic anhydride and 12.5mL of sulfuric ac...

Embodiment 3

[0022] A method for copper alloy constant temperature oxidation lake blue coloring is characterized in that it comprises the following steps:

[0023] (1) Prepare the coloring solution: first weigh 20g of lead carbonate and place it in a beaker with a capacity of 1L, add 200mL of deionized water and stir to dissolve, then measure 40mL of acetic acid and slowly stir into the solution. At this time, the solution is milky white. Set aside for 30 minutes, then weigh 60g of sodium thiosulfate and add it to the solution after standing, stir to dissolve it, and stand for 60 minutes to obtain the coloring solution;

[0024] (2) Copper alloy pretreatment: first measure 60g of oil powder LCX-52 (industrial grade) and dilute to 1L with water, heat to 60°C, put the copper alloy in the degreasing liquid for ultrasonic degreasing, take it out after 60s Wash with deionized water, then weigh 120g of chromic anhydride and 15mL of sulfuric acid, add water to dilute to 1L, stir evenly to prepare...

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PUM

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Abstract

The invention discloses a constant-temperature oxidation lake blue coloring method for a copper alloy. The method is characterized by comprising the following steps that (1), coloring liquid is prepared, specifically, lead carbonate, acetic acid and sodium thiosulfate are stirred and dissolved, and standing is carried out to obtain the coloring liquid; (2), pretreatment is carried out on the copper alloy, specifically, the copper alloy is put into an oil removal solution for ultrasonic oil removal, then a polishing solution is prepared, chemical polishing for 5-15 seconds is carried out on thecopper alloy, then the copper alloy is taken out and cleaned up, and then activating for 30-60 seconds is carried out by virtue of a sulfuric acid activation solution; and (3), the coloring liquid prepared in the step (1) is heated to 80 DEG C, the constant temperature is kept, the copper alloy treated in the step (2) is immersed into the coloring liquid and slowly stirred, immersing for 15-20 seconds is carried out to realize lake blue coloring, then the copper alloy is taken out, cleaned up with clear water and blow-dried, and then protection is carried out optical wax. The method is convenient to operate, efficient, reliable, good in effect, simple in formula and suitable for popularization and application of constant-temperature oxidation lake blue coloring for the copper alloy.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, and in particular relates to a method for constant-temperature oxidation of copper alloys for lake-blue coloring. Background technique [0002] Metal copper and its alloy coloring is a new type of surface treatment process that has been developed in recent years. , resulting in various shades of color, including yellow, orange, red, purple, blue, green, black, cyan, bronze, etc., but the electrolysis method consumes a lot of power and requires large equipment. In the prior art, there are many kinds of coloring processes, but there are many problems as follows: the formula components are complex, the coloring treatment time is long, the coloring effect is poor, the film layer is easy to fall off, the service life of the coloring solution is short, and the coloring thickness is uneven . Contents of the invention [0003] The object of the present invention is to overcome the above-men...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/52C23C22/78C23C22/73C23F3/06
CPCC23C22/52C23C22/73C23C22/78C23F3/06
Inventor 王宏袁贵川龚轩熊晨红
Owner AVIC STANDARD PARTS MFG
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