Vorrichtung zum Herstellen eines dreidimensionalen Objektes mittels Lasersintern

摘要

The invention relates to a device for producing a three-dimensional article by using laser radiation to harden successive layers of a suitable material (7) at points corresponding to each cross section of the article. The device has a holder (4) which carries the article (6) being produced, an applicator (12) to apply layers of the material (7) on to the holder (4) or on to previously hardened layer, a layer-hardening device (14) designed to harden the layers of material (7) at points corresponding to each cross section of the article, and a heater unit (8), located when in its operating position above the holder (4), for warming the material (7), the heater unit (8) including at least one radiant bar heater (81) whose heating power varies along its length.