Raw material selection: According to the specific requirements of the terminal copper strip, select high-quality copper raw materials, usually copper billets or copper wire billets.<\/p>\n
Preparation of copper alloy: If plating or alloy material is required, different types of copper alloys can be selected, such as silver plating, zinc plating, tin plating, etc.<\/p>\n
Cleaning: Before production, remove impurities, oxides and oil stains on the surface of raw materials to ensure that the copper surface is clean.<\/p>\n
2. Hot rolling or cold rolling<\/strong><\/p>\n Hot rolling: The copper billet is heated to a certain temperature and then rolled to increase its plasticity and reduce its hardness. The hot-rolled copper material can be initially formed into a thicker copper strip.<\/p>\n Cold rolling: The copper material is further rolled through a rolling mill at room temperature to reduce thickness and improve its strength, ductility and surface finish. The copper strip after cold rolling usually has higher precision and quality.<\/p>\n 3. Intermediate annealing<\/strong><\/p>\n Purpose: The purpose of annealing is to remove the internal stress generated in the copper material during the rolling process, restore the flexibility of the material, and improve the subsequent processing performance.<\/p>\n Annealing process: The rolled copper strip is heated to a certain temperature and then slowly cooled. This process softens the material and makes it more ductile.<\/p>\n 4. Pickling and cleaning<\/strong><\/p>\n Pickling: Oxides and impurities may be produced on the surface of the copper strip after annealing, so they need to be removed by pickling. Usually dilute sulfuric acid or other chemical reagents are used.<\/p>\n Cleaning: After pickling, the copper strip needs to be thoroughly cleaned with pure water to prevent acid residue from affecting subsequent plating treatment and product quality.<\/p>\n 5. Surface treatment<\/strong><\/p>\n Electroplating treatment: Surface plating treatment is carried out according to customer requirements, such as tin plating, nickel plating, silver plating, etc., to improve the conductivity, corrosion resistance and oxidation resistance of the copper strip.<\/p>\n Passivation treatment: Sometimes, in order to enhance the corrosion resistance of the copper strip, passivation treatment may be performed to further protect the surface.<\/p>\n![\"\"](\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2024\/10\/2024101216300176.jpg\")