Forming method of micro special-shaped composite strip with spire shape

The invention discloses a forming method of a micro special-shaped composite strip with a spire shape. The forming method comprises spools, an electric contact layer material, a substrate layer material, roll welding electrode wheels, a roll-welded composite strip, a drawing die, a rectangular composite strip, a four-roller device, a pointed composite strip, a roller, a finished product composite strip and a take-up wheel, wherein the electric contact layer and the substrate layer material to be subjected to roll welding are treated through the procedures of wire drawing, shaping, annealing, cleaning and the like. A rectangular wire is used as the preorder wire of the micro special-shaped composite strip with the spire shape, so that the use of a special-shaped die is reduced, and the universality of the die is improved; by adopting a four-roller stripping mode for forming, compared with a rolling forming mode, the method has the advantages that the forming efficiency is improved, the internal extrusion tende