PRODUCTION OF T-BENDS FROM PIPE BILLETS Russian patent published in 2014 - IPC B21C37/29 B21K1/14 

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and can be used for production of T-bends for heat and water supply circuits. Said T-bends are made from pipe billets at the unit composed of feed car, gearing, press with female die and male die support. Pipe billet with oval bore made therein is placed onto feed car and secure. Bore edges are heated to 900-1100°C with the help by cylindrical-segment inductor. Car with billet is fed into press working zone with simultaneous introduction of billet inside male die. Billet is fed to female die unless it thrusts there against or the other way round. Car is fixed to flange the branch pipe by drawing unheated male die through billet bore and female die bore. At a time, billet surface is cooled by male die. Produced T-band is withdrawn from working zone and removed from the car.

EFFECT: simplified production, higher quality and expanded range of standard types.

2 dwg