Science, Maths & Technology
Hot forging (closed die)
...out between the die parting lines and is called “flash” (dies are designed with a flash land and gutter). Closed die forging without flash uses a heated billet with a carefully controlled volume or weight. This is deformed to fill the die cavity by a punch, without any loss of material. Loads are higher than flash forgings. Billets are usually heated by induction...