Method and apparatus for continuous finishing hot-rolling a stee

Metal fusion bonding – Process – With condition responsive – program – or timing control

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228 9, 228 57, 228158, 2282352, B23K 2004

Patent

active

058711384

ABSTRACT:
A method and apparatus for continuously finishing hot-rolling steel strips include partially joining a rear end of a preceding steel strip and a leading end of a succeeding steel strip after the strips have passed through a rough hot-rolling step. The joint is flattened. The joint is rolled with a first stand of a tandem rolling mill. The mill is provided with a plurality of stands that includes a pair of work rolls and backup rolls and/or intermediate rolls, so that a compression stress acts at the unjointed section of the strips in the longitudinal direction of the joint while tracking the joint. Shape-control-rolling is performed on the joint with a second and succeeding stands so that a section of the steel strip other than the joint is subjected to the shape-control-rolling at all the stands.

REFERENCES:
patent: 3325623 (1967-06-01), Briggs, III
patent: 5217155 (1993-06-01), Kitahama et al.
patent: 5531089 (1996-07-01), Nikaido et al.

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