The main factors affecting the surface quality of the copper strip are the production process, and through the entire production process, there are the following reasons for the oxidation of the copper strip:
1. The pre -drying time is too long.
2. Acid -corrosive copper sheets produced after the curing agent.
3. Copper is an active metal element, which is easy to lose electrons and produce oxidation.
4. In addition, atmospheric humidity, surface pollution, impurities gas, etc. can also cause copper ore oxidation.
5. The red copper strip was cleaned thoroughly before silver plating, and the surface appeared black marks. It was a sub -salt produced by oxidation and loss of an electronic.
6. After cleaning, it did not dry in time, thoroughly drying, or poor craftsmanship. The residual water traces, cleaning fluid, etc. have an electrochemical reaction with the oxygen in the air and the oxygen in the air. Black sub -copper is generated, and it is green salt in severe cases.
Approach:
1. Strengthen the inert gas during the protection of thermal protection. Because the chemical properties of copper are very lively, at high temperature and heat treatment, they can have a rapid chemical reaction with the more lively gas substances in the air. Therefore, it is necessary to protect the inert gas in it more powerful and prevent copper from being oxidized.
2. Strengthen the cleaning of the surface of the copper strip to maintain high degree of smoothness. In rolled rolling and annealing process, the surface of the copper strip will inevitably produce oxides for real estate, and cleaning, abandoned, passivation and other cleaning methods.
3. Strengthen the control of the production process. Clean the impurities of the surface of the copper strip with hair brush and water, and wrap the copper strip with lining paper before rolling to prevent the surface from being scratched. In addition, the full oil rolling method is adopted to modify the oil device of the rolling machine, and slow down the rolling speed, and take all feasible methods to remove pollutants left on the surface of the copper strip. At the same time, our production managers have strengthened production management and increased monitoring.
4. Strengthen the final packaging of controlling the finished product. Copper strips must be dried after pickling. The humid environment will speed up the corrosion of copper and affect the accuracy of the finished product. Therefore, in order to ensure the dryness of the product, double measures are taken. While the finished products are as dry as possible, when packaging, first bandage with plastic bags, and then wrap it with white film to effectively prevent the external humidity during transportation. influences.
Post time: Dec-02-2022