Copper Strips being spooled

Principle



When frictional energy is applied to a ductile metal like copper, its temperature increases to form a plastic mass which can be continuously extruded out of a die into the desired shape.

Process

	Soft copper rod is fed to a rotating wheel and shoe assembly housing the extrusion die.
	The extreme pressures created with this arrangement leads to rise in temperature of the mass of copper in the die chamber to the plastic working range.
	This leads to continuous hot extrusion of a copper shape according to the die geometry.
	The emerging hot copper shape is then quenched, dried and spooled.
	The continuous extrusion process offers considerable advantages over conventional processes and is far more versatile.

	Enables production of long continuous lengths of soft annealed copper shapes.
	It offers finish dimensions for soft annealed copper products with a far higher degree of dimensional accuracies particularly with small corner radii.
	It produces a product with far less burrs than those by the conventional route.
	It facilitates production of complex cross sectional  geometries in a single stage.