Methods for making refractory crucibles

US7761969B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Bernard Patrick Bewlay · Niskayuna, US
• Michael Francis Xavier Gigliotti · Scotia, US
• Mohamed Rahmane · Clifton Park, US
• Thomas Joseph Kelly · Cincinnati, US
• Michael James Weimer · Loveland, US
• Sairam Sundaram · Guilderland, US

Key dates

• Filing date: Nov 30, 2007
• Grant date: Jul 27, 2010
• Expiry date: Jan 28, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T403/48
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Methods for making refractory crucibles capable of managing thermal stresses and suitable for melting highly reactive alloys, the method involving providing a crucible having at least a facecoat and a backing, heating at least one retaining ring, applying the at least one retaining ring about at least a portion of the backing of the crucible; and allowing the at least one retaining ring to cool and shrink-fit about the crucible.