Process for additive manufacturing and system

A method for the additive manufacturing of an object by means of a system which has a building space, a building platform within the building space, on which the object to be manufactured can be built up layer by layer, at least one coating unit for a layer-by-layer application of a build-up material in a building plane, which is provided parallel to the building platform, and at least two irradiation units including a first irradiation unit and a second irradiation unit, the at least two irradiation units for locally selective solidification of the build-up material in the building plane, wherein the method comprises:

• subdividing the building space into at least a first and a second segment along a direction of extension of the construction building platform, where at least one of the segments is formed as a single segment or at least one of the segments is subdivided into at least two sub-segments and to each segment and/or the sub-segments of a segment, at least one irradiation unit of the at least two irradiation units is assigned;
• applying at least one layer of the build-up material by means of the at least one coating unit moving along the segments;
• activating the at least one irradiation unit associated with the respective segment or at least one of the sub-segments for selectively solidifying the segment or at least one of the associated sub-segments as soon as the at least one coating unit has left the respective segment or sub-segment;
• deactivating the at least one irradiation unit as soon as an irradiation period is reached and the segment or sub-segment is solidified;
• and
• stopping of the at least one coating unit in any selectively solidified segment or sub-segment of the subsequent segments as a parking segment,
• wherein the at least one coating unit until it reaches the parking segment only passes through segments and/or sub-segments which are selectively solidified.