B - Operations – Transporting – 21 – B
Patent
B - Operations, Transporting
21
B
80/37, 80/51
B21B 1/02 (2006.01) B21B 1/22 (2006.01) B21B 1/42 (2006.01)
Patent
CA 1302743
70756-6 Abstract of the Disclosure Disclosed is a method of controlling a strip crown in planetary rolling in a planetary mill line. A slab of a metal is rolled using a shaped feeding roll or rolls before passing between planetary rolls to shape the profile of the slab in the widthwise direction of the slab so that the shaped slab has a flat central portion, opposite ends thicker than the central portion and side portions thinner than the central portion between the central portion and the side ends. At least one of a pair of the feeding rolls adjacent to the planetary rolls has a roll crown including (i) a central region flat or curved for correcting bend of the feeding roll, (ii) a side end having a diameter smaller than that of the central region, (iii) an enlarged side portion spaced from the side end by a distance determined by a roll gap between the central regions of the pair of feeding rolls and having a diameter larger than that of the central region by 0.1 - 1 % and (iv) a tapered side region between the enlarged side portion and the side end. Then the slab is further rolled by planetary rolls. By this way, a planetary-rolled strip having a substantially flat strip crown is produced.
546995
Inada Souichi
Miura Ryozo
Okamoto Yoshio
Takahashi Hiroki
Nippon Yakin Kogyo Co. Ltd.
Smart & Biggar
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