{"id":30453,"date":"2024-12-02T14:58:36","date_gmt":"2024-12-02T06:58:36","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=30453"},"modified":"2024-12-02T14:58:36","modified_gmt":"2024-12-02T06:58:36","slug":"clc0070","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/clc0070\/","title":{"rendered":"How to produce small copper sheets with small specifications and good quality"},"content":{"rendered":"

To produce small-sized copper sheets with good quality, precise production processes and technical requirements are required to ensure the uniformity, accuracy and stability of the materials. The following are several key points for producing small-sized copper sheets:<\/p>\n

1. Selection and pretreatment of raw materials<\/strong><\/p>\n

Choose high-quality copper material: usually choose red copper (purity 99.9% or above) because of its excellent conductivity and ductility. Red copper is an ideal choice for making high-quality copper skin.<\/p>\n

Annealing of copper material: Copper skin needs to be annealed before rolling to improve its plasticity and toughness, ensuring that it can be rolled multiple times without cracking. The annealing temperature and time must be controlled accurately to avoid over-annealing or under-annealing.<\/p>\n

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

Rough rolling: During the rough rolling process, a larger copper billet (such as 15mm) is rolled to a smaller thickness (such as 3.0mm) through multiple rolling passes. The rough rolling stage requires control of pressure and speed to ensure the uniformity of the material.<\/p>\n

Intermediate rolling: The semi-finished product of about 3.0 mm is rolled to about 1.0 mm through multiple passes, usually using emulsion or rolling oil. The control of this stage is particularly important, and the choice of oil and rolling speed will affect the surface quality of the final copper skin.<\/p>\n

Finishing rolling: The thickness of the copper sheet is further reduced to 0.5 mm or less during the finishing rolling stage. During finishing rolling, the cooling and lubricity of the rolling oil must be carefully controlled to ensure that the surface of the copper sheet is smooth and flawless.<\/p>\n

3. Cleaning and surface treatment<\/strong><\/p>\n

Degreasing and cleaning: There will be impurities such as oil, dust, etc. on the surface of the copper sheet after rolling, and it must be cleaned with a degreasing agent and pickled to ensure the surface is clean.<\/p>\n

Pickling and passivation: Pickling can remove oxides on the surface of the copper skin to ensure its surface is smooth; passivation helps prevent the copper skin from re-oxidation and maintain long-term stability and corrosion resistance.<\/p>\n

Drying treatment: The copper skin needs to be dried after cleaning to remove moisture and ensure that the surface is not damp.<\/p>\n

\"\"