- Manufacturing method for Cu-Al Clad bus bar

摘要

The present invention discloses a copper-aluminum clad busbar and a method for manufacturing the same. In the method for manufacturing a copper-aluminum clad busbar of the present invention, an aluminum material formed by pressing aluminum powder is inserted into a through hole in the center of a column-shaped copper material, and the copper material surrounds the outer periphery of the column-shaped aluminum material. A billet forming step of forming a billet for extrusion in the form of an extruder, an extrusion step of putting the billet for extrusion into an extruder and extruding the energized part at an extrusion temperature of 300°C to 400°C, and a joining step of joining the fastening part of the copper material wider than the area by friction stir welding. In the billet forming step, the area of the aluminum material of the central section of the billet for extrusion is 2 to 7 times that of the copper material, so that it has excellent bonding characteristics through a simple process and can significantly improve galvanic corrosion.