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Pickling agent used for copper and copper alloy finishing process

A pickling agent and copper alloy technology, which is applied in the field of copper and copper alloy finishing, can solve problems such as uneven brightness and affecting pickling effect, achieve good cleaning effect, improve pickling effect, and shorten the process flow

Active Publication Date: 2020-11-06
SHENYANG PARKERIZING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the finishing process, the cleaning agent in the cleaning process will remain in the pickling process, and the surfactant and other substances in the cleaning agent will precipitate during the rolling process under acidic conditions, which will affect the pickling effect and cause brightness after finishing treatment. Inhomogeneity

Method used

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  • Pickling agent used for copper and copper alloy finishing process
  • Pickling agent used for copper and copper alloy finishing process
  • Pickling agent used for copper and copper alloy finishing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of pickling agent for copper and copper alloy finishing process, according to mass percentage, composition is as follows: sulfuric acid 2%, citric acid 2%, potassium hydrogen persulfate double salt 20%, sodium dodecylbenzene sulfonate 1 %, NP-10 2%, 2-methyl-2,4-pentanediol 5%, RPE 1720 6%, sodium cumene sulfonate 8%, and the balance is pure water.

[0038] Preparation method: take the material according to the above-mentioned raw material ratio, and stir evenly.

[0039] When in use, add water to the above-mentioned pickling agent to form an aqueous pickling agent solution with a mass concentration of 30%, and then add abrasives and corresponding amounts of copper and copper alloy parts to the polishing machine for 5 minutes, and then perform polishing and polishing after washing with water. Anti-corrosion treatment, and then after washing and drying, the appearance inspection is carried out.

[0040] Compared with the standard sample, the treated sample has no...

Embodiment 2

[0042] A kind of pickling agent for copper and copper alloy finishing process, according to mass percentage, composition is as follows: sulfuric acid 2%, citric acid 2%, potassium persulfate 10%, sodium dodecylbenzene sulfonate 2%, NP -10 1%, 2-methyl-2,4-pentanediol 5%, RPE17204%, sodium cumene sulfonate 8%, the balance is pure water.

[0043] Preparation method: take the material according to the above-mentioned raw material ratio, and stir evenly.

[0044] When in use, add water to the above-mentioned pickling agent to make an aqueous pickling agent solution with a mass concentration of 30%, then put abrasives and corresponding amounts of copper and copper alloy parts into the finishing machine and roll for 5 minutes, and then carry out polishing and anti-corrosion after washing. treatment, and then washed and dried for appearance inspection.

[0045] Compared with the standard sample, the treated sample has no obvious color difference (⊿E≤1.5), is uniform and bright, and ...

Embodiment 3

[0047] A kind of pickling agent for copper and copper alloy finishing process, according to the mass percentage, the composition is as follows: sulfuric acid 5%, phytic acid 5%, sodium persulfate 20%, sodium dodecylbenzene sulfate 1%, JFC 2 %, 2-methyl-2,4-pentanediol 2%, RPE17406%, sodium cumene sulfonate 8%, and the balance is pure water.

[0048] Preparation method: take the material according to the above-mentioned raw material ratio, and stir evenly.

[0049] When in use, add water to the above-mentioned pickling agent to make an aqueous pickling agent solution with a mass concentration of 30%, then put abrasives and corresponding amounts of copper and copper alloy parts into the finishing machine and roll for 5 minutes, and then carry out polishing and anti-corrosion after washing. treatment, and then washed and dried for appearance inspection.

[0050] Compared with the standard sample, the treated sample has no obvious color difference (⊿E≤1.5), is uniform and bright,...

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Abstract

The invention discloses a pickling agent used for the copper and copper alloy finishing process. The pickling agent is composed of, by mass, 2%-5% of sulfuric acid, 2%-5% of organic acid, 10%-20% of an oxidizing agent, 1%-2% of an anionic surfactant, 1%-2% of a non-ionic surfactant, 2%-5% of hexylene glycol, 4%-6% of trans block polyether, 5%-8% of sodium cumenesulfonate and the balance water. Thepickling agent is used of pickling processing of the copper and copper alloy finishing process, impurities, such as carbide, left on annealed metal surfaces can be effectively washed away, the pickling effect is improved, a very high removal rate is achieved for oxidation films of copper and copper alloys, the surface quality after finishing is improved, and the product percent of pass is largerthan 90%.

Description

technical field [0001] The invention belongs to the technical field of light decoration of copper and copper alloys, and relates to a pickling agent used in the light decoration process of copper and copper alloys. Background technique [0002] Generally, the polishing process of copper and copper alloy parts is cleaning → pickling → polishing → anti-corrosion, and finally packaging. Copper and copper alloy parts obtained by stamping and plastic deformation need to be annealed to relieve stress, so that copper and copper alloy parts will be oxidized and discolored, and the residual stamping fluid or lubricant on the parts will be carbonized and adsorbed at high temperature parts. In order to restore the bright appearance of copper and copper alloy parts, it is necessary to use a polishing machine to add abrasives and chemicals, and use rotary, vibrating, eddy current and other rolling methods to carry out tumbling treatment, that is, polishing treatment. The purpose of cle...

Claims

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Application Information

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IPC IPC(8): C23G1/10
CPCC23G1/103
Inventor 赵金成夏明举孟令玉吴伏生周宪民
Owner SHENYANG PARKERIZING
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