Generatively produced turbine blade and device and method for producing same

Abstract

The present invention relates to a method for producing gas turbine components, in particular aircraft turbine components, preferably low-pressure turbine blades, from a powder which is sintered selectively in layers by locally limited introduction of radiant energy, wherein the sintering is carried out in a closed first housing (2), so that a defined atmosphere can be set, wherein the powder or at least a part of the powder is generated in the same first housing (2) or in a second housing connected to the first housing in a gas-tight manner. The invention further relates to a corresponding apparatus and to a gas turbine blade produced thereby.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a method for producing gas turbine components, in particular aircraft turbine components, preferably low-pressure turbine blades made of a powder which is sintered selectively in layers by locally limited introduction of radiant energy. In addition, the invention relates to an apparatus for producing gas turbine components, in particular according to a corresponding method, and also to a gas turbine blade produced thereby, in particular low-pressure turbine blades made of a TiAl material.[0003]2. Prior Art[0004]What are known as rapid prototyping—or rapid manufacturing—methods, i.e. methods for rapidly producing prototypes or for rapidly producing components, which utilize so-called generative production methods are known from the prior art. In these methods, three-dimensional structures are produced by selectively sintering powder, for example by means of laser or electron beams which a...

AI Technical Summary

Benefits of technology

[0020]In accordance with the present invention, it is therefore possible to produce gas turbine blades, in particular low-pressure turbine blades made of TiAl materials, which can be formed as hollow blades with an internal supporting structure. These components, which are producible only by generative methods in the case of a complicated cavity structure, can be produced according to the invention from the material TiAl, which is difficult to handle, or TiAl alloys, since fine-grained powders can be used and the pro...

Problems solved by technology

However, the methods and apparatuses described therein have various disadvantages.

By way of example, not all the components can be produced from all possible materials, because the nature of the generative production can introduce impurities, which lead to an unfavorable property profile that is unacceptable for the intended use.

Particularly in the case of titanium aluminide materials which are to be used, for example, for low-pressure turbine blades in aircraft engin...

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