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US 6,065,319 AGranted
Rolling mill with laterally different velocities
AssigneeIshikawajima-Harima Jukogyo Kabushiki Kaisha
InventorsMasao Mikami, Masahiro Kuchi, Sadahiko Shinya, Takayuki Iwasaki, Takashi Nishii
Life of this patent
Estimating the term…
Abstract
Each of a pair of rolls has a barrel with different diameters axially of the barrel such that sum of the diameters of the barrels is substantially constant and that each of the rolls is bilaterally symmetrical. The rolls themselves have an ability to control workpiece profile and have at least one substantially parallel center portion.
Claims13
A rolling mill with laterally different velocities which comprises:
- first and second work rolls, a sum of the diameters thereof being substantially constant along the length thereof, each of the work rolls having a parallel portion with a substantially constant diameter in a center portion of a length of the work rolls, the first work roll having divergent portions contiguous with the parallel portion thereof and with the diameter thereof being gradually increased toward end portions thereof, the second work roll having convergent portions contiguous with the parallel portion thereof and with the diameter thereof being gradually decreased toward end portions thereof, and
- a backup roll provided for each of said work rolls so as to support the work rolls at the parallel portion wherein a rotational velocity ratio of the work rolls is variable.
A rolling mill with laterally different velocities comprising,
- at least three work rolls combined together to provide a plurality of rolling passes, a sum of the diameters of the work rolls being substantially constant along their length, each of the work rolls having a parallel portion with a substantially constant diameter in a center portion of a length of the rolls, wherein divergent and convergent portions contiguous with parallel portions of the rolls and with diameters gradually increased and decreased toward the roll ends, respectively, are alternately formed on adjacent rolls.
Dependencies are inferred from the claim text.