A method of treating a metal billet to change its mechanical and/or physical properties by reducing grain size, the method involving feeding the billet through a first passage and into a second passage inclined to the first passage and deforming the billet by repeatedly loading and unloading it using a reciprocating die at a junction between the first and second passages.
|Patent number||US8631673 B2|
|Publication status||Published - 21 Jan 2014|
- plastic deformation
- metal billet
- grain size