| 摘要 |
PURPOSE:To obtain a wire rod excellent in mechanical descaling-properties by performing the descaling by high-pressure water just before rough rolling and finish rolling in a hot state and reducing the surface roughness of wire rod. CONSTITUTION:In the manufacturing process of a wire rod; after passing a heating furnace, a wire rod is descaled into a <=1.5mum average surface roughness by using >=90kg/cm<2> high-pressure water, just before rough rolling and finish rolling. By these treatments, the mechanical descaling and pickling properties of the wire rod at the time of drawing or at the preceding stage thereof in a cold state, are improved. Accordingly, the biting of scales at the time of wire drawing is prevented. |
