1、 Preparation work 2、 Chemical copper plating operation 3、 Processing waste liquid 4、 Precautions 5、 Summary
Author: Marisa
1、 Preparation work
The preliminary preparation work for chemical copper plating mainly includes cleaning the workpiece, equipment inspection, and preparing the plating solution. Firstly, it is necessary to use a metal cleaning agent to clean the surface of the workpiece to eliminate stains and oxides, thereby ensuring the adhesion and quality of the coating. At the same time, it is necessary to inspect and maintain the equipment to ensure its normal operation. Next, it is necessary to prepare the plating solution and perform necessary testing and adjustments.
2、 Chemical copper plating operation
The process of electroless copper plating includes steps such as pretreatment, activation, deposition, cleaning, and post-treatment. Firstly, place the workpiece into the pre-treatment tank for treatment such as anodizing or acid washing. Then, the activation step is carried out, which involves passivation and removal of surface oxides in the activation tank to improve the adhesion of the copper coating. Then enter the sedimentation tank for copper plating. In this step, it is necessary to control parameters such as deposition rate and current density to obtain a uniform, dense, and bright copper coating. After completing the copper plating operation, place the workpiece into the cleaning tank for cleaning to remove residual plating solution and cleaning agent. Finally, post-treatment is carried out by using degreasers or sealing agents to reduce phenomena such as ozone and oxidation.
3、 Processing waste liquid
A large amount of waste liquid is generated during the copper plating process and needs to be treated. Copper plating waste liquid contains a large amount of harmful substances such as copper ions, acidity, and heavy metals. In order to avoid environmental pollution, effective treatment measures need to be taken: the waste liquid can be neutralized, precipitated, filtered, adsorbed, etc. to meet environmental standards, and then safely disposed of.
4、 Precautions
In the process of chemical copper plating, the following points need to be noted: first, it is necessary to strictly control the plating solution formula and parameters to ensure the quality and uniformity of the coating. Secondly, personal protection should be taken into consideration to avoid contact and inhalation of harmful substances. At the same time, it is necessary to regularly check the operation of equipment, cleaning tanks, and waste liquid treatment equipment to avoid safety hazards.
5、 Summary
Chemical copper plating is an important metal surface treatment process that has been widely applied in fields such as electronics, optics, and machinery. In the process flow, attention should be paid to preliminary preparation work, strict control of parameters, personal protection, and disposal of waste liquid to ensure the safety, efficiency, and environmental protection of the process.