Apparatus for producing a three-dimensional workpiece with temperature-controlled shielding gas

• Main Authors: DIETER SCHWARZE, BIRK HOPPE, TONI ADAM KROL, FELIX MUTZ
• Format: Patent
• Language: Chinese; English
• Published: 16.02.2018
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE; WORKING METALLIC POWDER; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to an apparatus (10) for producing a three-dimensional workpiece (16), said apparatus (10) comprising: a carrier (14) being arranged in a process chamber (12) of the apparatus (10) and adapted to receive a layer of raw material powder (13); an irradiation device for selectively irradiating electromagnetic or particle radiation onto the raw material powder (13) applied onto the carrier (14) in order to produce the workpiece (16) from said raw material powder (13) by an additive layer construction method; and a shielding gas supply system (20) adapted to supply a shieldinggas to the process chamber (12), wherein the apparatus further comprises a shielding gas control system (30) that is adapted to control the temperature of the shielding gas. 本发明涉及种用于制造三维工件(16)的设备(10)，所述设备(10)包括：承载件(14)，所述承载件布置在所述设备(10)的处理室(12)中并适于接收原料粉末(13)层；辐照装置，所述辐照装置用于将电磁或粒子辐射选择性地辐照到施加在所述承载件(14)上的所述原料粉末(13)上，以便通过增材分层构造方法由所述原料粉末(13)制造所述工件(16)；以及保护气体供应系统(20)，所述保护气体供应系统适于向所述处理室(12)供应保护气体，其中，所述设备还包括适于控制所述保护气体的温度的保护气体控制系统(3