Union Copper » Manufacturing Process

/01 Production
- Raw materials is high quality copper cathodes
- Production capacity 15000 TPA
- Properties:
- - diameter of cast rod 8mm
- - the surface of wire rod is clean and smooth
- - electrical conductivity min 101% (IACS)
- - resistivity max 17.070nΩm
- - tensile strength approx. 170 N/mm2
- - elongation approx. 45%
/02 Packing
/03 Marking
- - Manufacturer / Trade mark
- - Net / Gross weight
- - Coil production number
- - Production number
/04 Quality Control
- - Oxygen test - This determines the oxygen content in copper
- - Chemical composition test using spectroscopy technology to determine the chemical composites of the produced copper rods.
- - Surface oxide measurement-elecrolyric removal of the surface oxide is used to determine the type and thickness of the oxide scale.
- - Conductivity - precision instrument measures the conductivity of copper.
- - Twist test - the rod is twisted back and forth ten times each and is then visually inspected.
- - Elongation and Tensile test - the rod is tested for elongation at fracture and for tensile strength.
- - Diameter checks - these guarantee that the rod are correctly round and of the required diameter.