3D laminated modeling device and 3D laminated modeling method

摘要

PROBLEM TO BE SOLVED: To provide a three-dimensional laminated modeling apparatus and a three-dimensional laminated modeling method for suppressing the occurrence of defects in a modeled object. A three-dimensional laminated molding apparatus 50 includes a base plate 10, a Z drive mechanism 5 for moving the base plate 10 in the vertical direction, and a powder supply unit for supplying a powder sample onto the base plate 10 and laminating a powder layer. , An electron gun 2 that generates an electron beam that irradiates the powder layer. In addition, the Z drive mechanism 5, the powder supply unit, and the electron gun 2 are controlled to irradiate the powder bed, which is the uppermost layer of the powder layer, with an electron beam to create a two-dimensional shape region obtained by slicing the modeling model into one layer. It is provided with a control unit that forms a three-dimensional modeled object by this melting, and two-split detectors 16A and 16B that detect the state of the powder bed. [Selection diagram] Fig. 1