{"id":10873,"date":"2024-10-25T16:41:37","date_gmt":"2024-10-25T08:41:37","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=10873"},"modified":"2024-10-25T16:41:37","modified_gmt":"2024-10-25T08:41:37","slug":"clc0013","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/clc0013\/","title":{"rendered":"How to ensure the quality of small copper flat bars"},"content":{"rendered":"

To produce small-sized copper flat bars and ensure the quality, it is necessary to strictly control every link in the entire process, from raw material selection to final product testing. The following are the key steps and technical points:<\/p>\n

1. Select the best raw materials<\/strong><\/p>\n

High-purity copper material: Selecting copper materials with high purity and few impurities can improve conductivity and ductility, ensuring that the copper strip still has good physical properties under small specifications.<\/p>\n

Material pretreatment: The raw materials need to be surface cleaned and pickled to remove impurities and ensure the purity and adhesion of the materials in subsequent processing.<\/p>\n

2. Precision rolling process<\/strong><\/p>\n

High-precision rolling mill: Use multi-tandem rolling mills (such as four-tandem rolling mills) to ensure uniform thickness and precise width of the copper strip. Multi-tandem rolling mills have more stable pressure control and can produce thinner and more precise copper strips.<\/p>\n

Multiple cold rolling and annealing: Cold rolling is used to achieve thickness control of small specifications, but internal stress will be introduced during the cold rolling process, which requires intermediate annealing to eliminate the internal stress and maintain the flexibility and strength of the material.<\/p>\n

Progressive rolling: Reduce the thickness step by step to avoid excessive deformation at one time, which may lead to cracks and surface defects, and ensure the quality of the copper strip.<\/p>\n

3. Strict surface treatment<\/strong><\/p>\n

Smooth surface: Precision polishing and cleaning processes ensure a smooth surface without scratches. Small-sized copper flat bars have high requirements for surface finish, and any scratches and unevenness will affect subsequent applications.<\/p>\n

Anti-oxidation treatment: Surface treatment such as tin plating, nickel plating or coating can enhance oxidation resistance and avoid oxidation during storage and transportation.<\/p>\n

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