CASTING MOLD FOR OBTAINING CASTING HAVING FRONT AND BACK SIDE FROM CURABLE CASTING MASS Russian patent published in 2023 - IPC B22D15/00 B22D17/22 B29C33/00 B29C43/36 B29C43/54 

FIELD: foundry production.

SUBSTANCE: casting mold for producing a casting having front and rear sides from a curable casting mass contains at least one first mold part (2) forming the front side of the casting, and one second mold part (3) forming the back side of the casting. Parts (2) and (3) together define the casting cavity (4). Part (2) contains a first metal layer (5), and part (3) contains a second metal layer (6), delimiting the casting cavity (4). At least one metal layer (5, 6) is made at least partially deformable to change the volume of the casting cavity. At least one part of the mold contains a flat intermediate layer (9) made of an elastically deformable and compressible material, relative to which the metal layer can move to generate a restoring force from the deformable intermediate layer. Under the pressure of the injection material supplied into the mold, the intermediate layer is compressed, generating a restoring force. During polymerization, the volume of the casting mass decreases, and the intermediate layer expands and reduces the casting cavity following shrinkage.

EFFECT: simplificating design of the casting mold.

21 cl, 3 dwg