Isothermal sheet rolling mill

Details Isothermal sheet rolling mill Isothermal sheet rolling mill

1990-09-14

1991-08-27

Larson, Lowell A.

Metal deforming

By use of roller or roller-like tool-element

With modification or control of temperature of work, tool or...

219 81, B21J 508

Patent

active

050422812

ABSTRACT:
A method and apparatus for the solid-state forming of a metallic feedstock into thin sheet or foil is disclosed that uses improved isothermal roll forging techniques. The improvements include the use of rotatable backup rolls for increasing hollow work roll stiffness, two independent work roll heating controllers, a reduced work roll diameter and other means for precise control of conditions within a feedstock "travelling hot zone" (THZ). The disclosed improvements allow the application of isothermal roll forging techniques to the rolling of thin sheets from difficult-to-work, high-strength metals such as aluminides, intermetallics, superalloys, titanium alloys, ODS composites, beryllium, and others in sheets having widths of 24-inches and more.

REFERENCES:
patent: 3644698 (1972-02-01), Metcalfe et al.
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patent: 3851138 (1974-11-01), Metcalfe et al.
patent: 3944782 (1976-03-01), Metcalfe et al.
patent: 3988913 (1976-11-01), Metcalfe et al.
patent: 3988914 (1976-11-01), Metcalfe et al.
patent: 4150279 (1979-04-01), Metcalfe et al.

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