Recently, a friend asked me about copper foils. Here I will analyze this problem and hope it will be helpful to everyone.

1. Iron is one of the burr elements. The production process of electronic copper foil should strictly control the use of iron equipment, including bolts, blades, levers, tools, etc., and have strict regulations. Iron will reduce copper in copper sulfate to produce univalent copper, which is difficult to regenerate into copper sulfate in the system. It will take a long time if it is consumed slowly.

2. Filtering system leakage or insufficient filtering accuracy is also one of the burr elements. Generally, copper foil plants will use three-level to four level filtering systems, and some manufacturers also use two-level filtering, which has a high risk of leakage.  

3. Raw material impurity exceeding the standard is also one of the burr elements. Raw material management and control means are incomplete, "disease comes from the mouth". Detailed raw material analysis and testing regulations should be established, and detection methods should be available from electrolytic copper to additives to ensure that all materials entering the system are qualified.

4. The instability of system liquid supply is also one of the burr elements. The impurities in the pipeline will break the balance under the solution fluctuation, causing impurities to enter the electrolytic cell.

5. Improper use of the auxiliary cathode is also one of the burr elements. The auxiliary cathode is to avoid copper plating at the edge of the cathode roll. If the control is not good, copper powder will be produced at the edge of the cathode roll, which will lead to the risk of burr.

6. The wrong recycling method of waste foil is also one of the burr elements. The waste foil is easy to produce univalent copper in the dissolution process. If the method is wrong, the univalent copper or copper powder that is not fully dissolved will enter the system, which will cause burr.

7. The incorrect use method of copper dissolving tank is also one of the burr elements. How to make the copper dissolving tank fully dissolve electrolytic copper and ensure that the high copper solution enters the system evenly needs to establish a detailed operation manual to ensure that the correct copper dissolving method is followed.

The above are the main influencing factors of pimples and burrs, and there are many other influencing factors, which will not be mentioned here. Through the analysis of this problem, I hope you can have a new understanding of the production of electronic copper foil. If you want to do a good job in the product, you should think of every detail, develop detailed and effective operating methods, and strictly implement them, Good products need the joint efforts of all employees.

Some copper foil factories will encounter unstable product quality. They always feel that they don't know why the product fluctuates. They don't know how to be good or how to be bad. This is a terrible thing. If they want to do a good job in the product, they need to analyze every link. Only when all links are controllable, is the guarantee of stable quality. Specific problems still need to be solved. I am willing to discuss production quality issues with friends in the same industry.