METHOD FOR MAKING WORKPIECES FROM COMPOSITE MATERIAL Russian patent published in 1994 - IPC

FIELD: metallurgy. SUBSTANCE: matrix metal in molten state is in contact with filler material or with preliminarily molded workpiece in the presence of reactive atmosphere in a pressure-tight container to at least some extent during the process facilitating the process of interaction between the reactive atmosphere and molten metal and/or filler material, or preliminarily molded workpiece, and/or pressure-tight container thereby making the molten metal to impregnate the filler material due to self-generating vacuum. This self-generating vacuum impregnation takes place without employing any outer pressure or vacuum. Molten metal acts to impregnate the mass of the filler material or mold to such an extent that it engages with at least part of the second metal. After cooling the molten mold metal to a temperature below the melting point of the mold metal a macrocomposite body is formed that includes metal mold composite body bonded with part of the second metal. EFFECT: enhanced efficiency of the method. 29 cl, 22 dwg