Deep drawing rods of composite material - with welded joints after specified preparation of ends

摘要

In a system for the mfr. of composite rods for deep drawing processes, e.g. Cu sheathed Al wires, the face ends of 2 rods to be joined, are given oblique angles. The face end which leads in the drawing direction is given a more acute angle and the Cu sheath is strongly chamfered and the lower half of the Al core is flattened. The other face receives a wedge on the core. Both rods are laid in a split sleeve and welded by axial compression. The face end of the leading rod, containing an Al core and a Cu sheath is machined to a more acute angle than the face end of the lagging rod. The Cu sheath on both face ends is chamfered back at a still greater angle. The lower half of the leading Al core is flattened and the outstanding Al core of the lagging rod is machined to a vertical wedge. Such a joint can stand a multi-stage deep drawing process of 80% total redn. without break.