Brief analysis of the points to note in the copper rod wire drawing process

Copper rod drawing is one of the most important processes in the
cable production process.
The drawing of 0.
4mm monofilament usually adopts successive annealed copper large pulling machine and medium pulling machine, which need to go through the processes of paying, wire drawing and annealing, cooling, drying and winding
.

First of all, a suitable mold should be selected, not too small, otherwise it will force the lattice variation of metal copper, aggravating the sharp rise
of metal temperature.

Secondly, check the pH of the emulsion before starting, ensure that it is an alkaline solution, and add antioxidants to the drawing oil together to form a passivation film on the surface of the copper conductor to avoid oxidation; When unwinding, insist that the unwinding tension is stable and uniform, and excessive trembling is not allowed; In the wire drawing process, the operator should ensure the appropriate water level height to ensure a uniform annealing degree and avoid lack or excessive annealing; When winding the wire, there should be no liquid left on the outer surface of the copper conductor, and a monotonous felt (often replaced) can be placed in front of the take-up to ensure the monotony
of the monofilament.

Finally, after drawing the plate, it is sealed with a clear plastic film and stored in a monotonous environment to be circulated, otherwise it will be easy to oxidize with humid air due to the high surface temperature of the conductor
.