Alstom Technology Limited

Ansaldo Energia IP UK Limited

Simone Hövel

Alexander Stankowski

Lukas Rickenbacher

Günter Ambrosy

Matthias Hoebel

Alexander Schnell

Hans Bissig

Matthias Höbel

Rainer Kurtz

Lukas Emanuel Rickenbacher

In a method for manufacturing an article (), particularly a prototype of a product or component, a tool prototype or spare part, by using selected laser melting, for the application onto the article () of a layer () or portion of a second metallic material, which is different from the material of the first metallic powder (), a tape (), sheet (), foil or three-dimensional pre-form () of a second material is applied to the article () and is heated by a focused laser or electron beam () to a specified temperature such that the tape (), sheet (), foil or pre-form, respectively, are made molten by the electron laser beam (), wherein the focused beam () is applied to a given area corresponding to a selected cross-sectional area of the model of the article () under formation of a new layer or part made of second material integral with the article ().

Method of applying multiple materials with selective laser melting on a 3D article

A method for repairing a gas turbine component includes: A higher degree of precision and automation can be achieved, because

Methods for repairing a gas turbine component

A process produces a 3-dimensional component () by selective laser melting (SLM), in which the component () is formed on a foundation with a surface, e.g., a platform () or a support, which in particular is a component of the same type which has already been produced previously, by successively melting layers of a first metal powder to form a sequence of stacked layers. The process is substantially simplified and made more flexible by virtue of the fact that the separation of the finished component () from the surface of the platform () or the support thereof is simplified by providing a separating layer () between the component () and the platform () or the support, this separating layer making it possible to separate the finished component () from the platform () or the support without damaging the finished component ().

Process for producing a 3-dimensional component by selective laser melting (SLM)

A gas turbine engine hot gas component repair method for defects that do not extend through the thickness of the component is provided. First defects are removed by machining a cavity in the surface of a component. Coupons, fittable within the cavities are manufactured, are for example coated with brazing medium on an inner surface and then joined to the component by joining means such as laser metal forming. The joint holds the coupon during later heat treatment, thereby eliminating a need for holding aids. Before heat treatment, a further brazing medium can be applied to the surface of the coupon overlapping onto the component. A single heat treatment, brazing the coupon to the component and, brazing the brazing medium to the outer surface of the coupon can, then be used to complete the repair.

Gas turbine hot gas component repair method

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Ennetbaden, Switzerland

Simone Hövel