| 摘要 |
PURPOSE:To manufacture a series of H-shape steel products having optional web height in good quality and in small numbers of rolls by providing a rolling mill for adjusting excess metal which is composed of upper and lower horizontal rolls on at least one side of the inlet or outlet side of a universal mill line. CONSTITUTION:Vertical rolls of the universal mill RU are movably provided on the outlet and inlet sides of rolling. In the case that excess metal 18 for spreading web height may be small, filling of material into recessed parts provided on the horizontal rolls of the universal mill is restrained by moving the vertical rolls on the outlet side and reducing metal flow from the flange to the web. On the other hand, in the case that large excess metal is required, that is, in the case that rolling down of excess metal 18 with the rolling mill 40 for adjusting excess metal is unnecessary, filling of material into recessed parts is accelerated by moving the vertical rolls on the inlet side and increasing metal flow from the flange to the web. In this way, the forming amount of excess metal per pass in the universal mill RU is roughly adjusted. |
