METHOD OF PRODUCING METALLURGICAL BILLETS WITH POROUS STRUCTURE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2016 - IPC B22D18/04 B22D27/09 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy and foundry and can be used for production of foam metals and foamalloys. In pouring autoclave 1, under gas pressure P₃, mold 2 is placed. Peculiar feature of invention is working gas pressure P₃ control in casting capsule 1, that provides boiling of liquid foamalloy and creation of fundamental foam structure of ingots and casts. Metal melt, saturated with gas or vapor of added melt of fusible material, e.g. calcium, magnesium, zinc, is fed into mold via gate pipe 10 due to pressure difference P₃ in autoclave 1 and P₂ in furnace autoclave. After reaching of preset melt level in metal mold 2 casting is stopped for time required for crystallization of required thickness of walls, control of working gas pressure in pouring autoclave 1 is performed. Melt in mold, part of it flows in receiving container 4, and in billet foam structure is formed.

EFFECT: higher yield is achieved due to elimination of shrinkage cavity in quiet steel ingots.

6 cl, 3 dwg