Washing agent and method for treating copper and copper alloy surface oxidation layer

A technology of surface oxidation and treatment method, applied in the field of metal product surface treatment lotion, can solve the problems of uneven corrosion, polluted production environment, easy damage to the thread of alloy parts, etc., and achieves easy control of process parameters and wide process temperature range. , The effect of cleaning the inner and outer surfaces

Inactive Publication Date: 2017-11-10
祝国忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The surface of copper and copper alloy products and parts can form oxides with oxygen in the air at room temperature. After processing (annealing, high-temperature bending, welding, etc.) heat treatment is easier to oxidize at high temperature, and a thicker and denser layer will be formed. The oxide skin brings great difficulties to the subsequent processing and use
Cleaning according to the existing common pickling process of copper and its alloys, it is difficult to meet the quality requirements
First, complex products are not cleanly removed or corroded unevenly, the product is

Method used

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  • Washing agent and method for treating copper and copper alloy surface oxidation layer
  • Washing agent and method for treating copper and copper alloy surface oxidation layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: the lotion for processing the oxide layer on the copper alloy surface is made of the following raw materials in parts by weight: 90 parts of sulfuric acid, 40 parts of ammonium persulfate, 40 parts of glacial acetic acid, and 0.05 part of benzotriazole.

[0029] During preparation, the above-mentioned components can be mixed in proportion.

[0030] Adopt the treatment method of the copper and copper alloy surface oxide layer of the lotion of aforementioned treatment copper alloy surface oxide layer, it comprises the steps:

[0031] Step (1): Put the copper and copper alloy products into the stainless steel basket and place them to prevent the air pockets in the tube;

[0032] Step (2): According to the oily state of the surface of copper and copper alloy products, add a degreasing agent on the surface;

[0033] Step (3): Rinse off the acid-base, oxides and impurities remaining on the inner and outer surfaces of the copper and copper alloy products with a ...

Embodiment 2

[0037] Embodiment 2: 220 parts of sulfuric acid, 90 parts of ammonium persulfate, 65 parts of glacial acetic acid, 0.2 part of benzotriazole.

[0038] During preparation, the above-mentioned components can be mixed in proportion.

[0039] Adopt the treatment method of the copper and copper alloy surface oxide layer of the lotion of aforementioned treatment copper alloy surface oxide layer, it comprises the steps:

[0040] Step (1) Put the copper and copper alloy products into the stainless steel basket and place them to prevent the water in the inner cavity of the tube;

[0041] Step (2): According to the oily state of the surface of copper and copper alloy products, add a degreasing agent on the surface;

[0042] Step (3): Rinse off the acid-base, oxides and impurities remaining on the inner and outer surfaces of the copper and copper alloy products with a high-pressure water gun;

[0043] Step (4): Put the copper and copper alloy products treated in step (3) into the afore...

Embodiment 3

[0046] Embodiment 3: 110 parts of sulfuric acid, 80 parts of ammonium persulfate, 60 parts of glacial acetic acid, 0.1 part of benzotriazole.

[0047] In this preparation, the above-mentioned components can be mixed in proportion.

[0048] Adopt the treatment method of the copper and copper alloy surface oxide layer of the lotion of aforementioned treatment copper alloy surface oxide layer, it comprises the steps:

[0049] Step (1) Put the copper and copper alloy products into the stainless steel basket and place them to prevent the water in the inner cavity of the tube;

[0050] Step (2): According to the oily state of the surface of copper and copper alloy products, add a degreasing agent on the surface;

[0051] Step (3): Rinse off the acid-base, oxides and impurities remaining on the inner and outer surfaces of the copper and copper alloy products with a high-pressure water gun;

[0052] Step (4): Put the copper and copper alloy products treated in step (3) into the afor...

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Abstract

The invention relates to a lotion for treating the oxidized layer on the surface of copper and copper alloy, which is made of the following raw materials in parts by weight: 90-220 parts of sulfuric acid, 40-90 parts of ammonium persulfate, 40-65 parts of glacial acetic acid, and benzene Azole 0.05‑0.2 part. The invention removes the oxide skin of copper and copper alloy products at one time, the inner and outer surfaces of the products and accessories are clean, the color is bright, uniform and shows the normal color of copper and copper alloys, there is no over-corrosion phenomenon, and the threads and accessories are free of any corrosion. damage; the process temperature range is wide, no heating is required in winter, and the natural environment can be produced; the operation is simple, the process parameters are easy to control, no need for frequent adjustments, high production efficiency, and low cost; copper and copper alloy product parts can be used in the same tank Liquid cleaning at the same time; no harmful gas volatilization, no need to add environmental protection equipment.

Description

technical field [0001] The invention relates to a lotion for treating the surface of metal products, in particular to a lotion for treating the oxide layer on the surface of copper and copper alloy and a treatment method thereof. Background technique [0002] The surface of copper and copper alloy products and parts can form oxides with oxygen in the air at room temperature. After processing (annealing, high-temperature bending, welding, etc.) heat treatment is easier to oxidize at high temperature, and a thicker and denser layer will be formed. The oxide skin brings great difficulties to the subsequent processing and use. Cleaning according to the existing common pickling process for copper and its alloys is difficult to meet the quality requirements. First, complex products are not cleanly removed or corroded unevenly, the product is prone to over-corrosion, and the threads of alloy parts are easily damaged; second, the process parameters are strict; third, the production...

Claims

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Application Information

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IPC IPC(8): C23G1/06C23G1/10
CPCC23G1/103C23G1/068
Inventor 祝国忠
Owner 祝国忠
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