METHOD OF PRODUCTION OF FOAMED ALUMINIUM Russian patent published in 1995 - IPC

FIELD: metallurgy. SUBSTANCE: flow of compressed dispersed mixture of metal melt with gas is fed under the melt level at a pressure exceeding the sum of atmospheric and metallostatic pressures, displaces the melt region adjoining the point of application of the dispersed mixture, and part of this mixture is continuously carried away and cooled down to solidification. Production of foamed aluminium with a porosity of 90%, controlled dispersity of pores and degree of homogeneity. As compared with the known production process, the manufacturing cost is reduced by 40%. EFFECT: facilitated procedure. 3 tbl