Mold for fabricating a monocrystalline blade by casting, a fabrication installation and method using the mold

US10576535B2 · kind B2 · utility

Assignees

• SAFRAN · FR
• SAFRAN AIRCRAFT ENGINES · FR

Inventors

• Ngadia Taha Niane · Moissy-Cramayel, FR
• Said Boukerma · Moissy-Cramayel, FR
• Serge Dillenseger · Jouy-le-Moutier, FR
• Julien Gelebart · Moissy-Cramayel, FR
• David Grange · Moissy-Cramayel, FR
• Jean-Claude Marcel Auguste Hanny · Paris, FR
• Philippe Metron · Nogent-sur-Oise, FR

Key dates

• Filing date: Jun 1, 2017
• Grant date: Mar 3, 2020
• Expiry date: Jun 1, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D27/045
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A ceramic material mold for use in molding a turbine engine blade from a molten metal, the blade including a root, an inner platform, an airfoil, and an outer platform, and the mold including a cavity having the shape of the blade, and an auxiliary grain duct including a first segment and a second segment that is an extension of the first segment, the first segment opening out at one end into a first portion of the cavity forming the root of the blade, and at another end into a second portion of the cavity forming a lip of the inner platform of the blade, the second segment opening out at one end into the second portion of the cavity, and at another end into a third portion of the cavity forming a lip of the outer platform of the blade.