There are many terms that are used in forging, some are only known in the trade but some are more universal.
We have listed just a few and will explain what they mean.
Various Forging Terms used
Heat forging this is when an amount of forging stock is placed in a furnace at any one time.
Hot forging this can also be known as hot working, it deforms an alloy at a temperature above its recrystallization point.
Heat resistant steel this is a steel designed for application at a higher temperature
Hollow forging This is the process for forging rings or tubes
Hot shortness Lack of ductility when the metal is hot
Hot Trimming When the metal is in the trimming process, the excess metal is removed
Hub The centre of a forging and forms part of the body of forging
Isothermal forging This is a hot forging process where a constant temperature is maintained during the forging process
Knockout This is a mechanism for releasing the pieces from a die
Liftout This is also the same as a knockout
Mill scale The heavy oxcide layer that is formed during the heated forging of steel
Nesting Multiple pieces in a forging die design
Rib A flat but usually with a draft thin portion of forging
Shoe This is a holder used as a support for portions of forging and trimming dies
Strain Rate This is the rate at which metal is deformed
Temperature Forging Forging stock temperature just ahead of being forged
Thermal Cracks Metal ruptures set up by stresses due to thermal differentials
Tolerance A design characteristic from a specification
Tongs A metal holder to handle hot forgings
Tool Steel A higher grade of steel made for use in tools and dies
There are many more forging specifications and terms that are used in day-to-day forging life.