At Greg Sewell Forgings we have 10 upsetting forging machines of various sizes which are capable of plastically deforming metal under great pressure into high strength components.
Upset Forging is achieved by holding pre-heated material between grooved dies, commonly known as ‘grip dies’. Pressure is then applied to the end of the bar in the direction of its axis.
The heading tool upsets the end of the bar by displacing the heated metal within a cavity. It is common to have a number of upsetting operations on one die set, forming the bar to its required shape in stages.