B - Operations – Transporting – 21 – B
Patent
B - Operations, Transporting
21
B
80/22
B21B 1/08 (2006.01) D06M 15/673 (2006.01)
Patent
CA 1186536
Abstract of the Disclosure A method of rolling raw materials inclusive of slabs for the manu- facture of beam blanks, and a roll to be used therefor, are disclosed. This method includes the steps of (a) subjecting a raw material, whose section con- sists of a web portion and a flange portion(s) having a width wider than the thickness of the web portion, to such a partial rolling that the web portion is partially rolled at regions inclusive of at least joints of the flange portion(s) except the remaining central region among a plurality of regions divided in the widthwise direction of the web portion; and (b) subjecting only the remaining central region to a rolling. In the practice of this method, there is used a roll consisting of a single cylindrical drum including a first segment and a second segment arranged side by side to each other; the first segment having at least one relief of circumferential grooves facing the web portion, a plurality of rolling collars separated apart from each other through the relief in the axial direction, and serving for the partial rolling of the web portion, and a circumferential groove(s) dividing a side of the rolling collar for the web portion near the joint and enclosing the flange portion; and the second segment having a pair of reliefs each composed of a wider circumferential groove facing the flange portion, and a rolling drum extending between the reliefs and serving for the rolling of only the remaining central region of the web portion.
378569
Ehiro Takashi
Kusaba Takashi
Okumura Hiroshi
Saito Shinzo
Tanaka Teruaki
Kawasaki Steel Corporation
Smart & Biggar
LandOfFree
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