FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy. The device comprises a vacuum induction furnace, a cylindrical container and a hydraulic press. The press comprises two hydraulic cylinders arranged coaxially with the container and each developing a force of 0.3 MN, a closing hydrauloc cylinder with a force of 3 MN, a multiplier and a high-pressure valve. Press-plungers of cylinders are installed as capable of opposite movement. Liquid metal at temperature above liquidus by 150-200°C, poured into a vacuumised container - a crystalliser from a vacuum chamber. The vacuum value in the container makes 0.2-0.3·10-5 mm of mercury column. The crystallising metal is exposed to pressure by press-plungers, which is increased with speed of more than 40 MPa/s to the value of 300-400 MPa. After compression of the metal by 10% they increase pressure with the same speed to value of more than 500 MPa, and metal is additionally compressed by 2.4-2.8%. Isostatic compression of metal is carried out until the metal cools down to 100-150°C.
EFFECT: thermodynamic parameters of the method provide for formation of fragments of a nanostructure of separate atoms and associations, which determines production of bars with mechanical properties not inferior to and superior to properties of rolled metal, forged and stamped billets.
2 cl, 6 dwg, 2 tbl, 2 ex
