Copper tube process mainly includes the following steps:
1. Raw material preparation
Copper selection: select high purity electrolytic copper to ensure the quality of copper pipe.
Melting: melting electrolytic copper into liquid state and removing impurities.
2.Casting
Continuous casting: liquid copper through the continuous casting machine to form a copper billet.
Billet treatment: surface cleaning and size adjustment of copper billet.
3.Extrusion
Heating: The copper billet is heated to the appropriate temperature.
Extrusion molding: copper billet is pressed into tube shape by extruder.
4.Drawing
Initial drawing: initially reduce the diameter of the copper tube and increase the length.
Multiple Drawing: Gradual drawing to the required size, with annealing in between.
5. Annealing
Softening treatment: heating the copper tube to the recrystallization temperature to eliminate internal stress and improve plasticity.
6.Finishing
Straightening: Make the copper tube straight by straightening machine.
Cutting: Cut the copper tube to the required length according to the demand.
7.Surface treatment
Cleaning: Remove oxidized layer and oil on the surface.
Polishing: Enhance the surface finish.
Coating: Apply anti-oxidation or anti-corrosion layer as required.
8.Inspection and Packaging
Quality testing: size, surface, mechanical properties and other tests.
Packing: Qualified products are packed and ready for shipment.
9.Finished product storage
Storage: Packed copper tube into storage, waiting for shipment.
Key process
Extrusion: affect the dimensional accuracy and surface quality of copper tube.
Annealing: Determine the mechanical properties of copper tube.
Surface treatment: improve the corrosion resistance and appearance of copper tube.
Application Areas
Copper tubes are widely used in air-conditioning, refrigeration, construction, electric power and other industries.
Through these steps, copper tubes go from raw materials to finished products, which are ultimately used in various fields.
