An extrusion machine is used to create copper wire by forcing the metal through a series of extrusion dies to create a particular shape. When creating cables, the copper begins as what's called an "ingot," which is basically a big brick of pure copper. The ingots are then stretched into long strands. The copper is first heated until it's flexible, and then pushed into the machine. Once it has reached a certain temperature, the machine begins to pull and form the copper into long strands. It's at this stage that it's decided what thickness the cable will be, as copper strands can be stretched into very thin wires, usually a very small fraction of an inch. After the copper has been formed into a strand, it is very stiff and frail. In order to become flexible, the wire will go through a process called "annealing," which means that the wire must be treated with heat to become malleable. Heating the wire will also help relieve any internal stresses inside the wire, as well as to soften the surface of the metal. Typically the copper is heated to about 1000-1200F, until the wire is glowing. The copper is then submerged in water right after reaching the desired heat, so that the metal can cool which will reduce the risk of oxidation. The machine then pulls the metal and submerges it into a 10-foot long bath of water in order to cool down and finish the formation process. The metal should now be soft and bendable. The next step is to add the copper together with the other wiring to finish forming the cable.
Specifications
a. Specification of TJ550A Machinery:
Wheel Diameter: 550mm
Main Motor: 400KW/1000rpm
Rotation Speed: 1-8 rpm
b. Feedstock
Material: Clean of up casting copper rod
Rod Diameter: 22 mm± 0.2 mm
Tensile strength <170N/ mm2
c. Product
Maximum Cross Sectional Area: 400mm2~6000mm2
Maximum Width: 280 mm (or 90mm rod)
Output:(average) 2300Kg/h
Flash level: (depending on section area and normal tooling) 3-6%
Spooler Flange: 2000~2500mm
d. Plant Requirement
Power Supply: AC 380 V, 3 Phase, 50 Hz, 550KVA
Compression Air: 0.7MPa, 2m3/min
Loop Cooling Water: >0.3MPa, 100m3/h
Space: 45m X 10m
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