Method for making an integrated core-shell structure

US11813669B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• James Herbert Deines · Mason, US
• Brian David Przeslawski · Monroe, US
• Michael John McCarren · Cincinnati, US
• Gregory Terrence Garay · West Chester, US
• Douglas Gerard Konitzer · Sharonville, US
• Mark Willard Marusko · Springboro, US
• Xi Yang · Mason, US
• Brian Peterson · Lake Worth Corridor, US

Key dates

• Filing date: May 27, 2022
• Grant date: Nov 14, 2023
• Expiry date: May 27, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Partial integrated core-shell investment casting molds that can be assembled into complete molds are provided herein. Each section of the partial mold may contain both a portion of a core and portion of a shell. Each section can then be assembled into a mold for casting of a metal part. The partial integrated core-shell investment casting molds and the complete molds may be provided with filament structures corresponding to cooling hole patterns on the surface of the turbine blade or the stator vane, which provides a leaching pathway for the core portion after metal casting. Core filaments that can be used to supplement the leaching pathway, for example in a core tip portion of the mold are also provided herein.