| 摘要 |
PURPOSE:To obtain highly efficiently a zinc coated brass wire with thick thickness and the prescribed size and strength characteristics, by adopting a base wire extrusion and drawing system as a manufacture of a titled composite electrode wire of zinc coated brass wire. CONSTITUTION:A zinc billet 3 is heated by using an extruder 1 and, on the other hand, a brass wire 2 is preheated to apply a tension forward to the wire 2 while lowering a stem 6 under pressure, thereby passing the wire 2 through a nipple 5 and a die 4 to extrude a composite base wire 7. Next, the base wire 7 is continuously drawn through several tens of passes, and an extremely fine wire 8 is obtained by drawing it at a reduction ratio of >=90% in total. |
