PRESSURE CASTING MOULD FOR CASTING CYLINDER BLOCK OR BOTTOM PARTS OF CRANKCASES Russian patent published in 2021 - IPC B22D17/24 

FIELD: foundry engineering.

SUBSTANCE: mould for pressure casting a cylinder block or the bottom part of a crankcase is comprised of a fixed part (10) wherein a gating system (26) for distributing the melt is made at least partially, and moving parts (28, 20) wherein a cavity (20) is made at least partially to form a cylinder block (34) or the bottom part of a crankcase. An intermediate part (14) of the mould is located between the fixed part (10) and the moving parts (28, 29) of the mould, wherein said intermediate part at least partially limits the cavity (20) for forming a cylinder block (34) or the bottom part of a crankcase and wherein the gating system (26) and several gating channels (22) are made at least partially. The gating channels (22) made tapering in form of a funnel towards the cavity (20) flow into the thick-walled areas (42) of the cylinder block (34) or the bottom part of the crankcase.

EFFECT: improved microstructure of castings is provided in the thick-walled areas thereof without the need to use additional booster or pressure apparatus, and a possibility of increasing the pressure of the mould feed is provided, mould manipulation simplified.

10 cl, 4 dwg