Linde Aktiengesellschaft

Messer Industries Usa, Inc.

Eric Hultstein

Pierre Foret

Dominik Bauer

Sören Wiberg

Jürgen Scholz

A method and apparatus for the generative manufacture of a three-dimensional component in a processing chamber, in which the steps 'providing a metallic starting material in the processing chamber' and 'melting the starting material by means of energy input' are repeated multiple times, wherein a process gas is provided in the processing chamber are disclosed. The method is characterized by the steps: 1) the hydrogen content of the process gas or a sample of the process gas is determined; 2) the oxygen content of the process gas or a sample of the process gas is determined by means of an oxygen sensor and/or the dew point of the process gas or a sample of the process gas is determined; and 3) the values for the oxygen content and/or the dew point determined in step 2 are corrected by means of the value for the hydrogen content determined in step 1.

Method for the generative manufacture of a 3-dimensional component

A method and apparatus for the generative production of a three-dimensional component in a processing chamber are disclosed. The method performs the steps of providing a metal starting material in the processing chamber and melting the starting material by inputting energy, which are repeated multiple times. A process gas is passed through the processing chamber in a circuit. Hydrogen is added to the circulating gas, then the circulating gas is heated to a temperature above 500 &#xb0; C. and then cooled to a temperature below 60 &#xb0; C.

Growing community of inventors

Munich, Germany

Eric Hultstein