Electroless nickel immersion gold is a technology that utilizes the principle of chemical reaction to deposit a nickel alloy coating on the surface of a material under electrolyte-free conditions. This technology is widely used in the electronics, automotive and aerospace industries. Compared with the traditional electrolytic nickel plating, electroless nickel plating has the advantages of environmental protection, economy and high efficiency, and can replace the traditional electroplating technology.
Process Flow
- Chemical wastewater treatment: filter, precipitate and desalinate the ions and other substances in the wastewater to realize the treatment and recycling of wastewater.
- Surface treatment and activation: Different surface treatment methods are used to make the surface of the PCB substrate suitable for nickel plating coating.
- Activation washing: treat the surface of material with special activator to make the nickel ions on the surface become easier to react with the chemical solution.
- Chemical Coating: Spray the chemical liquid onto the surface of the base material and deposit a uniform nickel alloy coating under the action of chemical reaction.
- Drying: High temperature drying is used to fix the coating and make it stronger.
Compared with the traditional electrolytic and chemical methods, electroless nickel immersion gold technology has significant advantages. Firstly, since the technology does not require the use of toxic and harmful chemical reagents, it has less impact on the environment and meets the requirements of green environmental protection. Secondly, electroless nickel immersion gold technology is easy to operate and has high production efficiency, which can significantly reduce production costs. In addition, this technology is applicable to various types of gold-bearing ores, especially for the extraction of low-grade ores has a significant effect, improving the utilization rate of resources.
Electroless nickel leaching technology has a wide range of applications. In actual production, this technology can be combined with conventional ore treatment methods to realize the efficient extraction of precious metals. With the continuous improvement and perfection of the technology, electroless nickel leaching gold technology is expected to become the mainstream technology for precious metal extraction in the future.
Electroless nickel immersion gold is an emerging salt plating technology, which has many advantages and wide application prospects that traditional electroless nickel plating does not have. In the future development, electroless nickel plating technology will be more mature and its application will be more extensive.
