Metal deforming – By use of roller or roller-like tool-element – Plural roller-couples
Patent
1986-05-06
1988-03-15
Spruill, Robert L.
Metal deforming
By use of roller or roller-like tool-element
Plural roller-couples
72199, 72229, 72247, 72366, B21B 102, B21B 3118
Patent
active
047304758
ABSTRACT:
A metal workpiece such as a slab is rolled into a desired width without requiring broadsiding. The system generally involves reducing a first portion along the width of the workpiece to a first thickness while creating a second portion along the width of the workpiece having a thickness greater than the first portion thickness and having a predetermined mass. Subsequently the second portion is reduced to establish a predetermined increase in the width of the workpiece and a decrease in the thickness of the workpiece to obtain a substantially uniform thickness along substantially the entire width of the workpiece. A preferred approach includes providing a pair of cooperating work rolls at least one of which has a generally cylindrical portion and at least one adjacent tapered portion. Initial reduction is effected by employing a pair of cooperating cylindrical central portions and at least one tapered portion. This provides a workpiece with a reduced portion and an enlarged portion. The workpiece subsequently may be rotated 180 degrees or side shifted and rolled between a generally cylindrical central portion and a second pair of tapered portions. Subsequently, further reduction may be effected solely between a pair of central portions. Relative axial movement of one work roll with respect to another may be employed in effecting sequential spreading of the workpiece.
REFERENCES:
patent: 3857268 (1974-12-01), Kajiwaka
patent: 4238946 (1980-12-01), Tsubota
patent: 4392371 (1983-07-01), Okumura et al.
International Rolling Mills Consultants, Inc.
Katz Steve
Silverman Arnold B.
Spruill Robert L.
United Engineering Rolling Mills, Inc.
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