| 摘要 |
PCT No. PCT/JP84/00226 Sec. 371 Date Jan. 2, 1985 Sec. 102(e) Date Jan. 2, 1985 PCT Filed May 4, 1984 PCT Pub. No. WO84/04263 PCT Pub. Date Nov. 8, 1984.Rolling method and apparatus for forming sections having a flange connected to a web. Between two optional steps of roughing, intermediate rolling, and finishing steps, rolls 15, 15', 16, and 16' are arranged to expand the web in the widthwise direction. The rolls 15, 15', 16, and 16' fall in contact with the inner sides 21 and 22 of flanges. The rolls 15, 15', 16, and 16' may be engaged with the upper and lower faces of the web. The axes of the rolls 15, 15', 16, and 16' may be inclined at a predetermined angle theta h in a direction horizontally rectangular to the rolling direction. It is preferred that the axes of the rolls 15, 15', 16, and 16' be vertically inclined at an angle theta v to the horizontal plane. |
