Production process and product advantages of C22000 copper wire:

Production process

Wire drawing

Using a multi-pass drawing process, the purchased 8mm copper rod is drawn step by step into the specifications required by the customer (such as 1mm and finer) through a large drawing machine, a medium drawing machine, and a small drawing machine. During the process, a water-based copper drawing liquid is used for spraying and lubrication, and the lubricating liquid is reused through a circulation system to reduce waste. The residual liquid on the surface of the copper wire after drawing needs to be removed to ensure cleanliness.

Annealing treatment

The copper wire after drawing needs to be annealed to eliminate work hardening. The annealing temperature is 650℃, and the equipment runs continuously to improve efficiency. The ductility and conductivity of the copper wire are optimized after annealing.

Patented anti-oxidation process

Using self-developed anti-oxidation technology (such as patent ZL200710124784.9), the copper wire can remain unoxidized for 51 days without protection through special treatment, significantly improving product stability and storage life.

Subsequent processing

According to the needs, wire bundling, re-twisting, insulation coating and other processes may be carried out, and finally strict quality inspection and packaging are passed for storage.

Product advantages

Excellent physical properties

Electrical conductivity and thermal conductivity: copper content reaches 89-91%, electrical conductivity is 2.6×10⁷ S/m, thermal conductivity is 190 W/m·K, suitable for high-conductivity scenarios such as electronic components and cables.

Mechanical strength: tensile strength 260-520 MPa, yield strength 69-500 MPa, elongation ≥20%-45%, with both high strength and good plasticity.

Excellent processing performance

Excellent cold processing performance, easy to form by drawing, forging, welding and other processes.

Excellent cutting performance, suitable for precision processing (such as drilling, cutting), high surface treatment compatibility.

Corrosion resistance

Excellent performance in the atmosphere, fresh water and marine environments, suitable for architectural decoration, ship accessories and other fields that require long-term corrosion resistance.

Wide range of application scenarios

Electronic and electrical: used for anti-magnetic interference wires, sensors, resistor elements, etc.

Industrial manufacturing: bearings, valves, fasteners and mechanical structural parts.

Architecture and decoration: water supply pipes, medals, artworks, etc.