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Connector copper alloy wire pickling solution and pickling technological method thereof

A process method and copper alloy technology, applied in the field of pickling solution for copper alloy wires of connectors, can solve the problems of large metal loss, strong reaction, polluted air, etc.

Inactive Publication Date: 2016-03-02
WUHU CHUJIANG ALLOY COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to eliminate the cherry blossoms of the copper alloy wire during processing, high-temperature oxidation annealing is required. After annealing, the surface of the copper wire is oxidized. The outermost side of the copper alloy oxide skin is black copper oxide, and there is a layer of brown oxide on the copper oxide wire. Cuprous, in order to remove the surface oxide layer, it is necessary to pickle the annealed copper wire. At present, the pickling liquid formula used by most copper price industrial enterprises is a solution made of nitric acid and water in a certain proportion. The disadvantage is that the reaction is strong, and the copper will be corroded if the pickling time is long, the metal loss will be large, and a large amount of irritating gas will be generated during the pickling process, which will pollute the air.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh 66 parts of concentrated sulfuric acid, 55 parts of sodium nitrate, and 15 parts of brightener;

[0041] First pour a certain amount of pure water into the beaker, then slowly pour 66 parts of concentrated sulfuric acid into the beaker, and keep stirring with a glass rod, then add 55 parts of sodium nitrate, and stir until completely dissolved;

[0042] When the temperature of the solution drops to 59°C, add 15 parts of brightener soaked in cold water and stir thoroughly;

[0043] When the temperature of the solution drops to 29°C, put it in a constant temperature container and keep it warm.

[0044] A pickling solution for copper alloy wires of connectors and a pickling process method thereof, comprising the following steps: sampling—weighing—pickling—cold water washing—saponification treatment—drying—weighing;

[0045] S1: Take the copper alloy wire rod whose specification is 0.88mm*4.01mm, weigh it, and record the weight;

[0046] S2: Put the copper alloy wir...

Embodiment 2

[0055] 90 parts of concentrated sulfuric acid, 70 parts of sodium nitrate, 20 parts of brightener;

[0056] The configuration steps of the pickling solution are as follows:

[0057] First pour a certain amount of pure water into the beaker, then slowly pour 90 parts of concentrated sulfuric acid into the beaker, and stir continuously with a glass rod, then add 70 parts of sodium nitrate, and stir until completely dissolved;

[0058] When the temperature of the solution drops to 67°C, add 20 parts of brightener soaked in cold water and stir thoroughly;

[0059] When the temperature of the solution drops to 35°C, put it in a constant temperature container and keep it warm.

[0060] A pickling solution for copper alloy wires of connectors and a pickling process method thereof, comprising the following steps: sampling—weighing—pickling—cold water washing—saponification treatment—drying—weighing;

[0061] S1: Take the copper alloy wire rod whose specification is 0.88mm*4.01mm, we...

Embodiment 3

[0071] 59 parts of concentrated sulfuric acid, 49 parts of sodium nitrate, 19 parts of brightener;

[0072] The configuration steps of the pickling solution are as follows:

[0073] First pour a certain amount of pure water into the beaker, then slowly pour 59 parts of concentrated sulfuric acid into the beaker, and keep stirring with a glass rod, then add 49 parts of sodium nitrate, and stir until completely dissolved;

[0074] When the temperature of the solution drops to 50°C, add 19 parts of brightener soaked in cold water and stir thoroughly;

[0075] When the temperature of the solution drops to 25°C, put it in a constant temperature container and keep it warm.

[0076] A pickling solution for copper alloy wires of connectors and a pickling process method thereof, comprising the following steps: sampling—weighing—pickling—cold water washing—saponification treatment—drying—weighing;

[0077] S1: Take the copper alloy wire rod whose specification is 0.88mm*4.01mm, weigh ...

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PUM

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Abstract

The invention discloses a connector copper alloy wire pickling solution and a pickling technological method thereof. The pickling solution and a copper alloy wire are provided. The pickling solution consists of the raw materials in parts by weight as follows: 50-90 parts of concentrated sulfuric acid, 45-70 parts of sodium nitrate and 10-20 parts of brightening agent. A preparation method of the pickling solution comprises the steps as follows: a certain amount of pure water is poured into a beaker; a certain amount of concentrated sulfuric acid is slowly poured into the beaker, and is continuously mixed with a glass rod; then weighed sodium nitrate is added, and is mixed till dissolved completely; after the temperature of a dissolved solution falls to 50-67 degrees, an appropriate amount of brightening agent soaked with cold water is added, and is mixed fully; and after the temperature of the pickling solution falls to 25-35 degrees, the pickling solution is put in a thermostatic container to be subjected to heat preservation storage. With the adoption of the pickling solution and the pickling technological method, metal losses are reduced, link pollution is reduced, and an industrial environment is improved.

Description

technical field [0001] The invention relates to the field of copper alloy wires, in particular to a pickling liquid for copper alloy wires of connectors and a pickling process method thereof. Background technique [0002] In order to eliminate the cherry blossoms of the copper alloy wire during processing, high-temperature oxidation annealing is required. After annealing, the surface of the copper wire is oxidized. The outermost side of the copper alloy oxide skin is black copper oxide, and there is a layer of brown oxide on the copper oxide wire. Cuprous, in order to remove the surface oxide layer, it is necessary to pickle the annealed copper wire. At present, the pickling liquid formula used by most copper price industrial enterprises is a solution made of nitric acid and water in a certain proportion. The disadvantage is that the reaction is strong, and the copper will be corroded if the pickling time is long, the metal loss will be large, and a large amount of irritat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/10
CPCC23G1/103
Inventor 吴明辉周友翠谢道金孙常金蒋云才黄景彪胡海群
Owner WUHU CHUJIANG ALLOY COPPER