Isothermal forging

A hot-forging process in which a constant and uniform temperatureThe temperature of the forging stock just prior to forging. is maintained in the workpiece during forgingThe process of working metal to a desired shape by impact or pressure in hammers, forging machines (upsetters), presses, rolls, and related forming equipment. by heating the diesThe metal blocks into which forging impressions are machined and from which forgings are produced. to the same temperatureThe temperature of the forging stock just prior to forging. as the workpiece. Most commonly conducted at about 2000°F under a controlled atmosphere or in a vacuum to prevent oxidation while forging superalloysA term broadly applied to iron-base, nickel-base, and cobalt-base alloys, often quite complex, that exhibit high elevated-temperature mechanical properties and oxidation resistance..