MANUFACTURING METHOD OF FORGINGS BY HOT FORMING ON PRESSES Russian patent published in 2011 - IPC B21K29/00 

FIELD: metallurgy.

SUBSTANCE: forming is performed in stamping block that consists of upper and lower stamps and is equipped with heat insulation. To side surfaces of upper and lower stamps there supplied is heat energy that is created by means of electric heating device installed on the press. Besides, stamps are heated on the side of their prints by additional heating device. The above device has housing forming together with working edges of stamps a closed space. Additional device heats the air and provides its forced circulation in the above closed space. Prior to the beginning of forming the additional device is removed from the connector of stamping block.

EFFECT: providing equalisation and stabilisation of temperature of stamps in the area of prints, which allows obtaining forgings with homogeneous structure and uniform distribution of mechanical properties throughout the volume.

1 dwg