Multi-piece integrated core-shell structure for making cast component

US11351599B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

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

Key dates

• Filing date: Mar 23, 2020
• Grant date: Jun 7, 2022
• Expiry date: Mar 23, 2040

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.