ARTICLE AND ITS PRODUCING METHOD, AND SACRIFICIAL CORE FOR INVESTMENT CASTING AND ITS PRODUCING METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a method for producing an article provided with porous reticulate regions (42, 140). PSOLUTION: A reticulate-core element for forming, having the shape at least partially corresponding to the shape of a gas turbine engine blade (20), is disposed to form the engine blade (20). Molten metal material is cast into a shell so as to at least partially infiltrate into the reticulate core element and solidified. The shell and the reticulate core element are destructively removed, and the engine blade (20) provided with one or more gas-permeable porous reticulate regions (42, 140), is formed. In this way, the cooling performance is improved. PCOPYRIGHT: (C)2006,JPO&NCIPI