Light metal extruded section for use as a cooler for electrical components has a heat-conducting body with teeth on a front side, a flat rear side and a laser welding-joint to join together single sections abutting in a butt joint

摘要

Two single sections (2) correspond to the working width of an extruding machine. Each single section has a flat heat-conducting body (3) with flat rear side (5) and multiple teeth (4) on the front side. For laser welding the teeth are laid on a backing strip. A welding pool support tooth (6) overlaps the heat-conducting body for an adjacent single section. The heat-conducting bodies abut each other in a butt joint (7).