METHOD OF PRODUCING SHEET SLAB FROM ALUMINIUM AND ITS ALLOYS Russian patent published in 1994 - IPC

FIELD: foundry. SUBSTANCE: method of continuous casting of sheet slab of aluminium and its alloys in a roll mould for producing a fine-grained homogeneous structure without shrinkage porosity is characterized in that metallostatic pressure H of melt in crystallization zone is set according to relationship σ/ρ·r≥ H≥ 0,34Q/V≥ 0.56 A, where σ is a surface tension of the melt, r is a specific weight of the melt, r is a radius of the melt meniscus in the crystallization start-up zone, Q is a specific volumetric flow rate of the melt fed into the cavity of rolls, V is a drawing rate of the billet, A is a length of crystallization and deformation zone, 0.34 and 0.56 are empiric coefficients. EFFECT: enhanced efficiency. 1 dwg, 1 tbl