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Processing technology of oxygen free copper

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Update time : 2023-01-06 18:40:49

Oxygen free copper: oxygen free copper is high purity cathode copper as raw material, the solution is covered by forging wood carbon, melting, forging under closed conditions to produce oxygen content in 30×10-6 following copper.

Oxygen free copper is the key component used in electric vacuum pump instrument equipment. Commonly used for medical busbar, conductive bar, waveguide, coaxial line, vacuum seal, vacuum solenoid valve, transistor components, etc.

1) Processing properties of oxygen-free copper:

The performance of smelting and forging process of anaerobic copper: The key application of anaerobic copper is DC core induction furnace smelting. In order to ensure the quality of oxygen free copper, to ensure the "fine feed tightness", that is, the raw material with w(Cu) > 99.97% and w(Zn) < 0.003% electrolytic nickel, smelting must pay attention to reduce the source of air, and the application of wood carbon by forging burn treatment cover, can also add a small amount of phosphorus as a deoxidizing agent. N2 protection or banquet cover under the semi-continuous forging process casting. Forging temperature is 1150-1180℃.

Anaerobic copper molding processing performance: anaerobic copper hot and cold production and processing performance are very good, can pull, injection molding, extrusion, bending, stamping die, cutting, stamping, upsetting, rotary forging, calcination, external thread suppression, extrusion tap, coil, good malleability for calcined copper 65%. The heat treatment temperature is carried out at 800-900℃.

Performance of welding method of oxygen free copper: it is easy to carry out arc welding, soft fiber welding, hard fiber welding, vapor maintenance tungsten argon arc welding, vapor maintenance metal material argon arc welding, and its oxygen gas cutting performance is excellent, so it is not strongly recommended to maintain metal material argon arc welding and most resistance welding methods.

Turning production and machinability of anaerobic copper: drilling performance of anaerobic copper can be 20% of easy cutting copper HPb63-3.

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