US 5,222,282 A · Method for reducing thickness of a high-strength low-ductility metal foil on thin strip element

Abstract

A thin strip or foil element of titanium aluminide, nickel aluminide or high strength titanium alloy material is inserted between a metal carrier strip and a metal top lid strip having one end welded or otherwise secured to the carrier strip to be passed between pressure rolls of a rolling mill with the strips and squeezed together with the strips in air at room temperature a plurality of times, preferably with a metal pressure board disposed against the top lid strip adjacent the top pressure roll, to reduce the thickness of the thin strip or foil element by at least 15 percent each time. The element is heated in a protective atmosphere after each reduction in thickness to stress relieve and at least partially recrystallize the element material.

Claims14

Dependent claims

A method for processing a thin strip material of high strength, low ductility metal, comprising the step of:

advancing a carrier metal strip between pressure rolls under tension;
securing one end of a top lid metal strip to the carrier strip to be advanced between the pressure rolls with the carrier strip;
inserting a single thin strip material of high-strength, low-ductility metal having a selected length and width and relatively smaller thickness between the top lid strip and the carrier strip to be carried between the pressure rolls with the strips;
squeezing the top lid and carrier strips between the pressure rolls at room temperature by passing the strips between the rolls while maintaining the carrier metal strip under tension, thereby reducing the thickness of the thin strip material progressively along its length, and separating the material from the strips.

1 more element

A method for processing a thin strip element of high-strength, low-ductility metal, comprising the steps of:

advancing a carrier metal strip from a pay-off reel between pressure rolls to a take-up reel under tension between both the pay-off reel and the pressure rolls and the pressure rolls and the take-up reel;
securing one end of a top lid metal strip to the carrier strip to be pulled between the pressure rolls with the carrier strip;
inserting one thin strip element of high-strength, low-ductility metal material having a select length and width and relatively smaller thickness between the top lid and carrier strips to be carried between the pressure rolls with the carrier strip and covered by the top lid strip;
pressing a pressure board against the top lid strip adjacent to the pressure rolls;
squeezing the top lid strip, element and carrier strip together between the pressure rolls in air at room temperature while maintaining the carrier metal strip under tension, thereby prohibiting wrinkling and maintaining alignment of said element as the strips and element are passed between the rolls while reducing the thickness of the element progressively along the element length;
and separating the element from the strips.

3 more elements

Dependencies are inferred from the claim text.

Method for reducing thickness of a high-strength low-ductility metal foil on thin strip element

Life of this patent

Method for reducing thickness of a high-strength low-ductility metal foil on thin strip element

Life of this patent

Abstract

Claims14