Raw Materials Selection
Quality Inspection: Inspection is done before production to validate raw material content in chemicals, physical attributes, and condition of surface to production standards.
Melting And Casting
Melting Process: Chosen raw material is placed in a furnace to melt. This is heated to an intense extent (most often between 1100 to 1200°C) to melt down to full. Proper fluxes can be used in this process to remove impurities.
Casting: Once melted in sizes and forms to specification in the shape of billets. Proper process control is required to achieve proper consistency and density in the billets.
Extrusion
Pre - heating: It is used to pre-warm the billets to an optimum range (around 700 to 900°C) to soften their plasticity in order to reduce the amount needed to soften.
Extrusion Molding: Pre-heated billets are supplied to an extruding press. Under die stress, the copper is caused to flow in taking desired special-shapred forms. Extrusion speed, stress, and stress have to be to specification exact to obtain dimensional correctness and surface finish in forms.
Post - processing
Heat Treatment: Heat treating is used to treat shape-critical copper extrusions following extruding in an effort to strengthen their mechanics by methods such as annealing to relieve stress.
Surface Treatment: Plating, polishing, or coating is done in these extrusions to render these aesthetically pleasing and achieve improved corrosion resistance.
Quality Assurance
Dimensional Inspection: Measure to exactness to validate sizes irregular shape copper extrusions to guarantee that they have design specifications.
Non - destructive Testing: Perform non-destructive testing by non-destructive testing method in the form of ultrasonic testing or X-ray testing to inspect internal faults.
Performance Testing: Measure the electric conductance, conductance to heat, and physical strength to test overall quality.
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