METHOD FOR THE PRODUCTION OF A HOLLOW METAL PART BY MEANS OF CASTING

摘要

A method for producing a hollow metal part by casting, wherein a destructible core (20) is provided including a body (22) made of aggregate, and a shell (40) which surrounds the body and adheres thereto; the core (20) is positioned inside a mold (50); metal is melted and the liquid metal is injected, generally under pressure, into the mold (50), surrounding the core (20) embodying an interior space of the part; after solidification of the part, the body is disaggregated and it is removed through removal openings provided in the shell and the part; and said shell is destroyed and removed through removal openings provided in the part.

主权项

1. A method for producing a hollow metal part by casting, wherein:
a destructible core is provided including a body made of aggregated materials, and a shell surrounds said body and adheres thereto; the core is positioned in a mold; a metal is melted and liquid metal is injected into the mold, surrounding the core, the core embodying a space within the part; after solidification of the part, the body is disaggregated and removed through the removal openings provided in the shell and the part; and said shell is destroyed and removed through removal openings provided in the path; and wherein the destructible core destructible includes, in addition, a framework which passes through the body of the core and is connected to the shell, and wherein said framework is destroyed and removed at the same times as the body and/or the shell.