Forging
Forging is the exertion of pressure on dies or rolls surrounding heated aluminum stock, forcing the stock to change shape and in the case where dies are used to take the shape of the die. The forging subcategory is based on the forging process.
Source
40 CFR § 467.02
Scoping language
In addition to the definitions set forth in 40 CFR part 401, the following definitions apply to this part: