Manufacturing method by indirect extrusion method of aluminum-copper layered composite material

摘要

The present invention relates to a method of extruding a layered composite material of a copper-clad aluminum alloy for bus-bar (BUS-BAR), which is used for electric and electronic, by using an indirect extrusion method rather than the conventional hydrostatic extrusion method. Due to the complicated mechanism of the hydrostatic extrusion system, the price of the extruder is very expensive and the difficulty of operation due to the difficulty of mounting the billet due to the use of pressure transfer solvent. In order to solve the problem of causing the rise of the extruded billet by using a mechanical welding method or a pressure casting method, using a graphite powder as a lubricant using a die angle of inclination heating and back angle 2θ = 90 ° or less Because it is indirect extrusion, aluminum / copper layered composite materials with various characteristics and high value added at low price It can be used as a booth bar used for the purpose.