定径机是热轧钢管生产过程中,最后一道工序。它决定着钢管的表面质量和外形尺寸是否符合钢管标准。因此,定径机轧辊孔型设计的优劣,对取得优质的钢管产品,是至关重要的。 两辊式定径机由三、五、七个机架组成。中小型轧管机组使用的架数较少,大型轧管机组使用的架数较多。原因是:大口径钢管定径机的来料外形尺寸,误差较大,同时受到定径机轧机负荷及相对压下量的限制。为了安全和保证钢管的定径质量,大型轧管机组一般使用七个机架的定径机。 两辊式定径机的相邻两个机架,相互垂 Sizing machine is the hot-rolled steel production process, the last process. It determines whether the steel pipe surface quality and dimensions meet the standards of steel pipe. Therefore, the sizing mill roll hole design advantages and disadvantages, to obtain high-quality steel products, is essential. Two-roll sizing machine consists of three, five, seven rack. Small and medium-sized rolling mill units used less number of frames, large-scale rolling pipe unit used more frames. The reason is: Large caliber pipe sizing machine incoming material dimensions, greater error, at the same time by the sizing mill mill load and the relative reduction of the amount of restrictions. In order to secure and ensure the quality of the pipe diameter sizing, large-scale pipe-rolling units generally use the seven-rack sizing machine. Two roller sizing machine adjacent two racks, perpendicular to each other