| 摘要 |
PURPOSE:To enable the remarkable change of web height by rolling with a finish universal mill after forming a material to be rolled in the rolling process before the finish rolling so as to be made into the shape of fillet part that is decided so as to satisfy a specified relation. CONSTITUTION:The shape of fillet part of the material to be rolled before the finish rolling is decided so as to satisfy the relationship of the formula. The material is formed into the decided shape of fillet part by the rolling before the finish rolling. After that, it is rolled with the finish universal mill. In the formula, ldw shows the projected contact length between the web surface of the material and the horizontal roll in the finish rolling and ldt shows the projected contact length between the outside of flange part of the material to be rolled and vertical rolls in the finish rolling. In this way, the material to be formed with flanged section can be not rolled while restraining deviation from the prescribed dimensional allowance. |
