(1) , it must be acidified and dried first. After drying, draw; For wire with peeling, pits, heavy leather and other phenomena on the surface, it must be polished by a grinder before drawing;
　　 (2) Heat treatment: For wires with excessive hardness or uneven hardness, annealing or tempering should be used to reduce the hardness first, and the wire should maintain good hardness uniformity before drawing.
For the treated wire, it is helpful to better ensure the service life of the wire drawing die and the high smoothness and high quality of the wire surface.