QUASI SELF-DESTRUCTIVE CORE FOR INVESTMENT CASTING

摘要

A composite core for forming a passage in an investment casting mold is provided including a generally hollow structural element. The structural element is configured to deform when a force is applied to an end thereof. A rigid shell element is formed about the structural element. The shell element extends beyond both an interior surface and an exterior surface of the structural element. The shell element is configured to shatter when the structural element deforms.

主权项

1. A composite core positioned within an investment casting mold to form a passage, comprising:
a hollow structural element configured to deform when a force is applied to an end thereof; and a rigid shell element including a plurality of layers of slurry having particles of varying sizes formed about the structural element, the shell element extending beyond from an interior surface and to an exterior surface of the structural element such that the composite core has a hollow interior extending to adjacent the interior surface of the structural element, the shell element being configured to shatter when the structural element deforms.