FIELD: metallurgy (foundry).
SUBSTANCE: invention relates to the design of technological elements of the mould used in the manufacture of cast parts for critical purposes from various alloys (cast iron, steel, aluminium, etc.), and concerns the possibility of reliable and safe movement of massive, large-sized casting moulds by making a special cavity in the sandy-porous structure of the casting mould. The casting mould comprises upper and lower half-moulds connected along parting line, casting core with internal cavity placed in free space of casting mould for pouring metal, gas exhaust and ventilation channels made in mould and in internal cavity of casting core, respectively, at that in upper the half-mould has an air outlet cavity located above the casting core, the inner cavity made in the casting core and the air outlet cavity made in the upper half-mould are located coaxially to each other and form one common cavity designed for air outlet and movement of the casting mould , while the direction of the centre of mass vector along the Z axis must coincide with the axis of the cavity intended for air outlet and movement of the mould, the shape of the upper part of the cavity intended for air outlet and movement of the mould is made in the form of a cylinder combined with two opposite prisms, and the shape of the lower part of the cavity, intended for air outlet and movement of the casting mould, is a segment of the body of revolution in the form of a cylinder. In a particular embodiment of the casting mould, the cavity is made blind, not facing the forming surface. In a particular embodiment of the mould, if the mould comprises two special cavities, then the direction of the centre of mass vector along the Z axis must intersect the line connecting the centres of the circles of the cavities. In a particular embodiment of the mould, if the mould comprises three or more cavities, then the direction of the centre of mass vector along the Z axis must be inside the polygon formed by the centres of the cavities.
EFFECT: possibility of reliable and safe movement of massive, large-sized casting moulds.
4 cl, 7 dwg
