FIELD: foundry, namely members for making pouring systems of casting molds. SUBSTANCE: insulating and exothermic sleeves and other members used at pouring melt metal are produced by blowing out mixed material and cold setting of it at contact with catalyst. Mixed material includes hollow spherical microparticles of alumosilicate containing less than 38 mas.% of alumina, binder and, possibly non-fibrous fillers. In dependance upon density of spherical microparticles it is possible to select suitable composition for making sleeves and insulating and exothermic members of pouring gates and feeders. Sleeves have accurate outer and inner dimensions and they may be connected with casting mold at once after their manufacture without additional manual or automatic working. EFFECT: enhanced quality of sleeves, their high-accurate dimensions. 19 cl, 3 dwg, 2 ex
