| 摘要 |
PURPOSE:To make the removal of secondary scale easy and to obtain a wire rod having a good surface characteristic by subjecting a heated blank material prior to rough rolling to primary descaling and making combination use of square calibers in intermediate and finish rolling. CONSTITUTION:A heated blank material prior to rough rolling is subjected to primary descaling by using >=80kg/cm<2> highly pressurized water. At least one piece of square calibers are used in combination with oval calibers and round calibers and rolling is accomplished therewith in the stage of intermediate and finish rolling, whereby the average surface roughness of the wire rod is regulated to about <=1.5mum. The cold removal of the secondary scale is easily and surely accomplished by the above-mentioned method, whereby the life and drawability of dies during drawing are improved. |
