| 摘要 |
PURPOSE:To shorten line length and to reduce installation cost and to execute a drawing process economically installation cost by executing continuous dry wire rod drawing, and performing smooth surface treatment with cheap line powder. CONSTITUTION:A wire rod 1 rolled out from a pay-off stand 2 is descaled of surface oxide films and etc. through a shot-blast device 4 used as a descaling device after passed through a rectifying machine 3. The wire rod 1 is passed through a lubricating surface tank 5, and is drawn through a lubricated ground surface press-fitting dice 6. During this step, while the line powder attaches to the wire rod 1, the lime powder is press-fitted on the surface of the wire rod 1 while passing through the press-fitting dice 6 and the calcite powder attached around the wire rod 1 and the peripheral calcite powder are reversely drawn between the dice 6 and wire rod 1 and the powder press fitted on the surface of the wire rod 1. Then the wire rod 1 is passed through a reinforcing lubricant tank 7 and a dice for reinforcing lubricant press fitting 8, and the reinforcing lubricant is furthwr press-fitted on the surface layer of the line powder press-fitted on the wire rod 1. Then the wire rod 1 is delivered to a pre-dice lubricant tank 9, and, following this, is drawn through a wire drawing dice 10 with a prescribed work ratio. |
