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Copper gold powder slurry for mechanical plating and preparation method thereof

A preparation method and technology of copper-gold powder are applied in the field of copper-gold powder slurry for mechanical plating and its preparation, which can solve the problems of inability to use, incompatibility of accelerators, reducing the wetting and dispersibility of inorganic metal powders, and the like. Convenient source, eliminate metal dust pollution, eliminate the effect of scattering

Active Publication Date: 2017-05-10
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Surface modifiers such as silane coupling agent series and higher fatty acid series, which are widely used in the chemical industry, have a good effect on the surface modification of inorganic metal powders, but reduce the wetting and dispersibility of inorganic metal powders in acidic aqueous solutions.
Furthermore, solvents such as banana water, toluene, xylene, tributyl ester, and ammonium chloride commonly used in the field of metal pigments can significantly modify the surface of metal powders in the coating preparation process, but these solvents are not compatible with mechanical plating. The plating solution environment and accelerators of the zinc-copper process are not compatible, so they cannot be used in the process of mechanical zinc-copper plating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The copper-gold powder slurry for mechanical plating described in this embodiment has a composition and mass percentage of:

[0016] Copper gold (gold) powder 20%

[0017] Oxalic acid 5%

[0018] Citric acid 2%

[0019] Sodium polyacrylate 3%

[0020] Polyethylene glycol 200 3%

[0021] water balance

[0022] The above raw materials are all industrial grade chemical raw materials, and the water is clean tap water.

[0023] Take tap water according to the above ratio and put it in a glass container, add oxalic acid and citric acid to the water, then add copper and gold powder, stir slightly, then add sodium polyacrylate and polyethylene glycol, and use a glass rod to manually stir for 10 minutes. A partially suspended + floating copper-gold powder slurry is obtained.

[0024] The iron and steel parts to be plated are 100kg of Ф4.0×60 iron nails, and the surface area to be plated is 10㎡. The traditional mechanical galvanizing process is used to first coat the surfac...

Embodiment 2

[0026] The copper-gold powder slurry for mechanical plating described in this embodiment has a composition and mass percentage of:

[0027] Copper gold (green gold) powder 20%

[0028] Oxalic acid 8%

[0029] Citric acid 0.5%

[0030] Sodium polyacrylate 5%

[0031] Macrogol 400 1%

[0032] water balance

[0033] The above raw materials are all industrial grade chemical raw materials, and the water is clean tap water.

[0034] Take tap water according to the above ratio and put it in a large glass beaker, add oxalic acid and citric acid to the water, then add copper gold powder, stir slightly, then add sodium polyacrylate and polyethylene glycol, close the mouth of the glass beaker, and use magnetic stirring for 8 minutes , obtain copper-gold powder slurry in a glass beaker.

[0035] The steel parts to be plated are M16×50 bolts 100kg, and the surface area to be plated is 8㎡. The traditional mechanical galvanizing process is used to first coat the surface of the bolts wi...

Embodiment 3

[0037] The copper-gold powder slurry for mechanical plating described in this embodiment has a composition and mass percentage of:

[0038] Copper Gold (Bronze) Powder 20%

[0039] Oxalic acid 6%

[0040] Citric acid 1%

[0041] Sodium polyacrylate 4%

[0042] Polyethylene glycol 300 2%

[0043] water balance

[0044] The above raw materials are all industrial grade chemical raw materials, and the water is clean tap water.

[0045] Take tap water according to the above ratio and put it in a glass container, add oxalic acid and citric acid to the water, then add bronze powder, stir slightly, then add sodium polyacrylate and polyethylene glycol, stir by hand for 12 minutes, and get copper in the glass container Gold powder paste.

[0046] The steel part to be plated is Ф3.1×60 drill tail screw 100kg, and the surface area to be plated is 17㎡. The traditional mechanical galvanizing process is used to first coat the surface of the bolt with a zinc layer, and then add the zinc...

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Abstract

The invention discloses copper gold powder slurry for mechanical plating and a preparation method thereof and belongs to the technical field of surface mechanical plating of small hardware. The copper gold powder slurry for mechanical plating is applied to surface mechanical copper plating of steel parts and plating treatment of copper alloys. The copper gold powder slurry is composed of the following materials of 20% of copper gold powder, 5-8% of oxalic acid, 0.5-2% of citric acid, 3-5% of sodium polyacrylate, 1-3% of polyethylene glycol and the balance water; the copper gold powder slurry prepared in certain adding order is used for surface mechanical copper plating of the steel parts and plating treatment of the copper alloys, and traditional powder-shaped copper gold powder is substituted for adding, so that flying and drifting of the copper gold powder in the adding process are avoided, and the operating environment is improved; and in addition, when the copper gold powder slurry is used, adding is convenient, and the current technological process of mechanical zinc-copper plating is not influenced.

Description

technical field [0001] The invention relates to a copper-gold powder slurry for mechanical plating and a preparation method thereof, which belongs to the technical field of mechanical plating on the surface of hardware and is used for mechanical copper plating and copper alloy plating treatment on the surface of iron and steel parts. Background technique [0002] Using mechanical plating technology, a certain thickness of zinc layer is firstly plated on the surface of the steel substrate, and then a certain thickness of copper layer is mechanically plated on the surface of the zinc layer, so that a zinc-copper composite coating is obtained on the surface of the steel substrate to achieve double protection + decoration Effect. Literature search shows that Yu Ping once added copper in the process of mechanical plating in the article "Mechanical Copper Plating and Copper Alloy Process and Its Corrosion Resistance" (Electroplating and Finishing, 2005, No. 6, pp. 7-9). Powder, C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/58
CPCC25D3/58
Inventor 王胜民赵晓军王建强李自飞何明奕谭蓉黄国雄张国亮
Owner KUNMING UNIV OF SCI & TECH
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