Nippon Steel Corporation

Nippon Steel & Sumikin Engineering Co., Ltd.

Toru Ikezaki

Yasushi Horiuchi

Yoshun Yamamoto

Takeshi Hioki

Takashi Haji

Masanori Fujiwara

Hideo Mizutani

Tadashi Torii

Takashi Suzuki

Kazufumi Hirose

Hiroyuki Hosoda

There is provided a multifunction rolling mill for rolling an H-beam including: a pair of right and left vertical rollers composed of flange thickness reduction rollers; web thickness reduction horizontal rollers; and a pair of upper and lower horizontal rollers arranged on both sides of the web thickness reduction rollers, having flange width reduction rollers freely moved in the vertical direction by retracting mechanisms. In the case of reduction of flange thickness and web thickness rolling, the flange width reduction rollers of the above horizontal rollers are moved upward and downward so that the flange width reduction rollers of the horizontal rollers do not interfere with the vertical rollers.

Multifunction rolling mill for H-beam and rolling method of rolling H-beam with multifunction rolling mill

An edging mill for section rolling has a pair of horizontal rolls, each horizontal roll including a pair of axially spaced horizontal roll segments supported by driven horizontal roll shafts. Eccentric rings are disposed between the two horizontal roll segments making up each horizontal roll and are rotatably mounted on the horizontal roll shaft. The eccentric rings are eccentric to the horizontal rolls. Web-restraining ring rolls each comprise a pair of web-restraining roll segments rotatably fitted over the periphery of the eccentric rings concentrically thereto. A web-restraining ring roll positioning device rotates the eccentric rings. While the horizontal rolls roll the flange edges of the section, the web-restraining ring rolls hold the web of the section therebetween. The position of the web-restraining ring rolls with respect to the horizontal rolls changes with the rotating angle of the eccentric rings. The position of the web-restraining ring rolls is adjusted according to the flange thickness of the section.

Edging mill for section rolling

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Kitakyushu, Japan

Toru Ikezaki