Method for additively manufacturing of three-dimensional objects

Abstract

Method for additively manufacturing three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a powdered build material which can be consolidatedby means of an energy beam, whereby flow of an inert process gas, preferably an inert gas or containing inert gas, is created, the inert process gas flowing through a chamber (3, 10) of at least one build apparatus (2) which is configured to additively manufacture three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a powdered build material (3) which can be consolidated by means of an energy beam, and / or through a chamber of at least one apparatus (2) which is configured to perform at least one pre-processing step of an additive manufacturing process, and / or through a chamber of at least one at least one apparatus (2) which is configured to perform at least one post-processing step of an additive manufacturing process, wherein theflow of process gas displaces a certain volume of fluid from the chamber (3, 10), characterized in that the fluid displaced from the chamber (3, 10) is at least partially collected and / or fed back into the or a chamber (3) of at least one apparatus.

Description

technical field [0001] The invention relates to a method for the additive production of three-dimensional objects by selectively irradiating and solidifying layers of a powdered building material curable by means of an energy beam by selectively irradiating and solidifying them layer by layer, wherein an inert process gas is formed—preferably is an inert gas or a flow containing an inert gas—constructed to additively manufacture three-dimensional The chamber and / or flow-through of at least one building device of an object configured to perform at least one pre-processing step for an additive manufacturing process The chamber and / or flow-through of at least one device configured to perform at least one post-processing step At least one chamber of the device, wherein the flow of inert gas displaces a volume of fluid from said chamber. Background technique [0002] Such methods or manufacturing processes are known from the prior art, in which by feeding a process gas (for exam...

Images