PRESS FOR HARDENING OF DISCS IN WATER-COOLED DIES Russian patent published in 2013 - IPC C21D1/673 

FIELD: metallurgy.

SUBSTANCE: press for hardening of discs in water-cooled dies includes a bed frame, a water-cooled matrix located on the bed frame base, a power cylinder with a stock, which is fixed on upper beam of the bed frame, a water-cooled puncheon fixed on the stock of the power cylinder, and a control device of the power cylinder operation, which has Lifting, Lowering and Locked positions. The press is equipped with a weight-relief device of the water-cooled puncheon in Lowered position, which includes compensators of the water-cooled puncheon weight, which attach the water-cooled puncheon to upper beam of the bed frame. In addition, the puncheon is equipped with a damper and an installation plate; with that, the power cylinder stock is hinged through the above installation plate and the damper to the water-cooled puncheon, and the power cylinder operation control device also has Floating position.

EFFECT: improving processibility of a hardening process; providing uniformity of surface layer hardness; removing internal stress and preventing corrugation on both surfaces of hardened discs.

2 cl, 1 dwg