The preparation method of gold-plated tungsten wire mainly includes the following steps:
1. Preparation of tungsten wire: Use smelting, forging, rolling and other processes to prepare tungsten wire.
2. Pickling and decontamination: Pickling the tungsten wire to remove impurities and pollutants on the surface.
3. Preparation of plating solution: Select a suitable gold plating solution. Generally, potassium gold cyanide or potassium gold cyanide is used as the gold source, and an appropriate amount of buffer, complexing agent and other auxiliary ingredients are prepared.
4. Electroplating: Use tungsten wire as the cathode and put it into the gold plating solution for electroplating treatment. During the electroplating process, parameters such as current density and electroplating time need to be controlled to ensure that the gold layer is uniformly deposited on the surface of the tungsten wire.
5. Cleaning and drying: Clean the electroplated tungsten wire to remove surface residues and dry it.
6. Performance testing: Perform performance testing on gold-plated tungsten wire, such as corrosion resistance, oxidation resistance, hardness, etc.
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