Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Ingo Berger

Silke Settegast

Jan Münzer

Ingo Reinkensmeier

Steffi Raue

Uwe Dunkel

An apparatus for making bores in a turbine blade edge is provided. The apparatus includes a drilling device and a guide for the drilling device. The guide includes a bearing element with a gap which is delimited by bearing faces and has the shape of a turbine blade edge. Further, the apparatus includes two guide modules which lie opposite one another and are brought to bear with a side face of the turbine blade and which together form a tension device for fixing the guide on the turbine blade. Furthermore, a method for making bores in a turbine blade edge using such an apparatus is provided.

Apparatus and method for making bores in an edge of a turbine blade

A method in which no voids occur during the soldering processes is provided. A component with a soldering material is heated using a first temperature plateau for a first time duration such that the solder material is completely melted. Each subsequent heating is at a temperature plateau with a temperature that is lower than a temperature of the previous plateau.

Method for soldering with a multistep temperature profile

In soldering processes according to prior art, there is often an insufficient tie-up to a substrate of a component. A method in which no voids occur during the soldering processes is provided. A temperature pattern is proposed according to the method in which the temperature is lowered successively during the soldering operation.

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Zeuthen, Germany

Ingo Berger