The forging industry is composed of those plants that; a) make parts to order for customers (referred to as custom forgings); b) make parts for their own company’s internal use (referred to as captive forgings); or c) make standard parts for resale (referred to as catalog forgings).
The largest sector – custom forging – accounts for over $6 billion dollars in sales annually. These custom forgings are produced by about 250 forging companies in approximately 300 plants across the U.S., Canada and Mexico.
Although the styles and drive systems vary widely, a forging can be produced on many different pieces of equipment. Hammers with a driving force of up to 50,000 pounds, pound the metal into shape with controlled high pressure impact blows.
Presses with a driving force of up to 50,000 tons, squeeze the metal into shape vertically with controlled high pressure. Upsetters are basically forging presses used horizontally for a forging process known as “upsetting”. Ring Rollers turn a hollow round piece of metal under extreme pressure against a rotating roll, thereby squeezing out a one-piece ring (with no welding required).