For direct extrusion presses, temperature tapering of the billet can provide significant increase in press speed without reducing profile quality and in some cases improving profile quality.

Introducting a gear billet forming die carrier structure used on friction press for no fash forming discusses die carrier guide, ejector pins and main elements selection of materials, heat treatment.

Results show that cogging using concave anvil can increase the deformation at the center part of the billet and can press holes more effectively.