HOT FORGING OF SEMIS FROM CYLINDRICAL BILLETS Russian patent published in 2014 - IPC B21J1/02 

FIELD: process engineering.

SUBSTANCE: invention relates to blank production and can be used in press shop in production of semis. Blank is arranged in capsule with cylindrical wall and flat bottoms. Capsule is fitted in container pass through hole, container being mounted at press bed to displace axially thereat. Through hole length part features diameter corresponding to capsule wall OD. Bore features diameter corresponding to capsule wall ID on side facing the pressure male diameter. Axial force P_ax is applied by pressure male die with diameter corresponding to ID of capsule wall ID via one of capsule bottoms. Blank thrusts via second bottom on support male die. Force P_c is applied to container in direction opposite that of force P_ax application. Force P_pres is applied ion direction of force P_ax application at termination of forging stage. Note here that P_ax<P_c<P_pres.

EFFECT: higher quality of semis.

4 dwg, 2 ex