Siemens Aktiengesellschaft

Lutz Wolkers

Hans-Thomas Bolms

Silke Settegast

Carsten Deus

Peter Botzler

Jan Münzer

Thomas Podgorski

Joachim Senf

Ekkehart Reinhold

Hans-Jochen Student

A method for producing a hole with side-delimiting flanks in a component using a laser beam is provided. A laser beam is directed onto the component. A side flank of the hole is traced with the laser beam. A partial volume of the hole is formed by vaporizing the component material. This is repeated until the whole volume is formed. The laser beam may be oriented so that it includes an angle of more than 8&#xb0; with the traced side flank.

Method for producing a hole with side-delimiting flanks in a component

A process for producing a homogeneous oxide layer on metal components includes uniformly heating the components, in all their regions, in a vacuum chamber and, after a predetermined temperature has been reached, exposing the components to an oxygen-containing gas for a predetermined period and at a predetermined pressure. The metal components are coated with MCrAlY or PtAl. The preheating temperature is between 750 and 850&deg; C., preferably, approximately 800&deg; C. Preferably, the thickness of the homogeneous oxide layer is between 0.01 and 5 &mgr;m. The heating is preferably by electron radiation. The predetermined period is approximately 10 minutes, and the predetermined pressure is between 1&times;10 and 8&times;10 mbar.

Process for the vacuum coating of metal components

To achieve uniform heating of metal components in all their regions, a method and device for heating metal components using electron irradiation in a vacuum chamber includes multilayer holding elements having an outer layer facing the electron radiation. The outer layer is resistant to heat and exhibits good heat-absorption properties. The holding elements also have an inner layer facing the respective metal component and exhibiting good heat-radiating properties. The holding elements are used to hold the metal components in the vacuum chamber during heating.

Method and device for heating metal components using electron irradiation in a vacuum chamber

A method for cooling metal components highly heated in a chamber includes effecting a uniform cooling of an entire metal component. The metal component has regions each with a given mass, some of the regions having a larger mass than others of the regions. Housings are provided around regions with the relatively larger masses. The regions are subjected to the inert cooling gas in a controlled manner to a differing extent based upon the mass size. The housings are individually subjected separately with the inert cooling gas. A treatment device for cooling metal components includes a reservoir for holding inert cooling gas and a chamber for receiving a metal component to be cooled. The chamber is connected to the reservoir and has a housing for each of the regions with the larger mass. Each of the housing has an inlet orifice separately connected to the reservoir.

Growing community of inventors

Berlin, Germany

Lutz Wolkers