In this article, the author puts emphasis on analysis of the cause of crack in smooth anvil upsetting and puts forward some measures to improve the technique and to prevent the forming of the creak.

Superwidth Flat Anvil Forged Technology for Ring Forging;

Results show that compare with cogging process using common flat anvil and common V anvil, using concave flat anvil and concave V anvil can increase the deformation at the center of the billet > improve the stress state of the center part and greatly decrease t.