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Copper alloy electroplating process

An electroplating process, copper alloy technology, applied in the direction of metal material coating process, etc., can solve the problems of nickel layer appearance uniformity and low gloss, pitting primary battery, corrosion, etc., to ensure uniformity and gloss, enhance Corrosion resistance, effect of improving coating density

Active Publication Date: 2021-06-29
东莞市康圣精密合金材料有限公司
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AI Technical Summary

Problems solved by technology

[0005] 1. Poor pre-treatment. At present, 60% of the defective copper alloy electroplating products in the electroplating market are caused by poor pre-treatment;
[0006] 2. The imperfection of the electroplating process leads to low uniformity and gloss of the appearance of the nickel layer, and the porosity of the coating is large, which is prone to pitting corrosion and causes large-scale primary battery corrosion;
[0007] 3. Lack of post-processing protection measures
[0008] The above problems lead to the majority of defective products in the existing copper alloy electroplating products, the uniformity and stability of the surface appearance are poor, and the corrosion resistance of the coating is low

Method used

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  • Copper alloy electroplating process
  • Copper alloy electroplating process
  • Copper alloy electroplating process

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Embodiment 1

[0058] see figure 1 , copper alloy electroplating process, comprises the following steps:

[0059] Step 1, degreasing: perform mechanical polishing before degreasing the copper alloy, modify the surface of the copper alloy, provide a good electroplating plane for subsequent electroplating, and perform secondary cathodic degreasing treatment on the copper alloy successively;

[0060] The secondary cathodic degreasing uses an alkaline degreasing solution with a weight percentage of 10%. The first cathodic degreasing is at a temperature of 50°C and the current density is 5ASD, and the degreasing time is 5min. Under the condition of current density 10ASD, the degreasing time is 10min. The efficiency of electrolytic degreasing is much higher than that of chemical degreasing, and the degreasing is thorough. When the copper alloy is used as an electrode, immersed in the electrolyte, when direct current is applied, due to polarization, the metal -The interfacial tension of the soluti...

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Abstract

The invention discloses a copper alloy electroplating process, which belongs to the technical field of electroplating. The copper alloy electroplating process comprises the following steps: step 1, degreasing; step 2, hot water immersion; step 3, pickling activation; step 4, pure water spray washing ;Step 5, modify nickel; Step 6: common nickel; Step 7, hot water immersion; Step 8, clean immersion; Step 9, ultrasonic cleaning; Step 10, post-processing; Step 11, drying; Step 12 , drying; step thirteen, auxiliary material collection, which can be achieved by extending and optimizing the pre-treatment process line, providing a plating plane for subsequent coating deposition, improving the appearance of the coating, and improving the nickel base during the electroplating process. Significantly improved The nickel coating lattice makes the structure tight and the lattice is refined, reducing the porosity of the coating, so as to ensure the uniformity and gloss of the appearance of the common nickel layer. Through research and development, the introduction of a perfect cleaning process, combined with passivation treatment and sealing treatment, greatly enhances Corrosion resistance of the coating.

Description

technical field [0001] The invention relates to the technical field of electroplating, and more specifically, to a copper alloy electroplating process. Background technique [0002] The density of nickel is 8.907g / cm 3 , melting point 1450°C, nickel has high strength, good plasticity, high hardness, good wear resistance, strong forgeability, easy processing, good corrosion resistance, especially good alkali corrosion resistance, high temperature resistance, and small contact resistance. In the electroplating industry, the production volume of nickel plating is second only to zinc plating. [0003] Bright nickel plating---nickel layer is a silver-white metal with a yellowish light to improve the hardness, wear resistance and leveling of the surface. Its hardness is higher than that of copper, zinc, tin, cadmium, gold, silver, etc. , but lower than chromium and rhodium metals, has high chemical stability in the air, and has good stability to alkali; ordinary electroplating i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/34C25D5/14C25D5/48C25D3/12C25D3/56C23C22/60
CPCC23C22/60C25D3/12C25D3/562C25D5/14C25D5/34C25D5/48
Inventor 王培青冼水萍冼培贤李维木
Owner 东莞市康圣精密合金材料有限公司
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