Method of producing a turbine blade

US6739381B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Winfried Esser · Bochum, DE
• Michael Haendler · Erkrath, DE
• Peter Tiemann · Witten, DE

Key dates

• Filing date: Apr 4, 2002
• Grant date: May 25, 2004
• Expiry date: Apr 4, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49339
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In a method of producing a turbine blade in hollow section, an especially low defect or scrap rate is to be ensured. To this end, a first core element is connected via a number of approximately cylindrical spacers to a further core element and/or to a casting mold, the cavities left in the casting mold by the core elements being filled by blade material, and the openings remaining in the turbine blade after the removal of the core elements and the spacers and produced by the spacers being closed by stopper elements.