Metal fusion bonding – Process – With shaping
Patent
1991-11-08
1993-06-15
Ramsey, Kenneth J.
Metal fusion bonding
Process
With shaping
228 57, 72234, 29 8108, B21B 100
Patent
active
052191141
ABSTRACT:
In a continuous hot strip rolling system in which bars are joined between a roughing train and a finishing train for continuous rolling, the roughing train includes two two-high twin-roll arranged stands each having two pairs of work rolls. The four two-high mills provided by the two twin-roll arranged stands including four pairs of work rolls are disposed close to each other so as to provide a tandem rolling in which a material to be rolled is rolled simultaneously by the two adjacent mills. A slab having a thickness of 200 to 240 mm is rolled by the two twin-roll arranged stands to obtain a bar of about 80 mm. A width press is provided near the entrance of the No. 1 stand. A descaling device is provided at the entrance of each of the two stands. The descaling device has a nozzle which is movable in the direction transverse to the direction of travel of the material to be rolled. A non-driven roll edger is provided at the exit of each of the two stands. Thus, generation of camber in the roughing rolling process can be reduced, and stable joining continuous rolling can be conducted. Furthermore, the overall length of the system can be reduced, and reduction in the bar temperature, which occurs until the bar reaches the joining position, can be lessened. Rational bar joining can be conducted.
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Five-page Search Report.
Kajiwara Toshiyuki
Kouga Masaaki
Miyakozawa Keiji
Nisino Tadashi
Hitachi , Ltd.
Ramsey Kenneth J.
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