| 摘要 |
Object: In order to prevent (1) problems occurred at the time of biting of flanges by rolls, (2) wear of lateral surfaces of horizontal rolls of the fixed-width type as well as need for a frequent roll exchange, (3) wear of lateral surfaces of horizontal rolls of the fixed-width type, and (4) formation of rolling flaws on the inner surfaces of flanges, during tandem rolling through a roll arrangement of UR + E + UF. Constitution: A reverse rolling is carried out with a UR mill having a width WR of horizontal rolls, a UF mill having a width WF of horizontal rolls, and an E mill having a width WE of horizontal rolls under the conditions WF > WE, WR, or WE < WF, WR. <IMAGE> |
