| 摘要 |
PROBLEM TO BE SOLVED: To make rolling equipment more compact and increase productivity in comparison with conventional rolling equipment. SOLUTION: In this rolling method, cast metal is roughly rolled into a rough shape material with a breakdown mill 1, then the rough shape material is rolled into an H-shaped steel with only a mill group with two universal mills A and B, each equipped with a pair of horizontal rolls and a pair of vertical rolls, and arranged adjacent to each other, which are provided on the downstream side of the breakdown mill 1. In this case, flange width reduction is made with the horizontal rolls of either one universal mill of the mill group. |
