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US 6,569,270 B2Granted
Process for producing a metal article
AssigneeHoneywell International Inc.
InventorVladimir Segal
Life of this patent
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Abstract
Described is the production of a metal article with fine metallurgical structure and texture by a process that includes forging and rolling and control of the forging and rolling conditions. Also described is a metal article with a minimum of statically crystallized grain size difference in grain size at any location of less than about ±3%, as well as a dispersion in orientation content ratio of textures of less than about ±4% at any location.
Claims13
A process for producing a metal article, with fine metallurgical structure and texture comprising:
- providing a metal billet;
- heating the billet to a forging temperature below the recrystallization temperature of the metal;
- applying a solid lubricant between press plates of a forging machine in which the billet is to be forged and the ends of the billet to be forged to reduce the friction during forging;
- forging the billet to a desired billet thickness with about 70% to 90% reduction;
- bringing the forged billet to about room temperature;
- rolling the billet with a reduction in thickness per rolling pass sufficient to provide near uniform strain distribution to produce a plate;
- and
- recrystallization annealing the plate.
5 more elements
Dependencies are inferred from the claim text.