Selective laser melting continuous gradient material powder laying device and method

• Main Authors: LIU AIHUI, DING HONGYAN, LIN YUEBIN, ZHANG MAN, XIA MUJIAN, JIANG HAILIN, WANG HUALING, LI NIANLIAN
• Format: Patent
• Language: Chinese; English
• Published: 10.11.2020
• 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; CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; WORKING METALLIC POWDER

The invention discloses a selective laser melting continuous gradient material powder laying device and method. The device comprises a workbench and a control system. A forming cylinder, a powder overflowing cylinder, a powder storage cylinder and a powder laying scraper are arranged on the workbench. The powder overflowing cylinder and the powder storage cylinder are located on two sides of the forming cylinder correspondingly. A control system controls the powder laying scraper to do reciprocating translational motion along the powder storage cylinder, the forming cylinder and the powder overflowing cylinder. The powder storage cylinder comprises a first powder supply cylinder and a second powder supply cylinder. A first push plate is arranged at the bottom of the first powder supply cylinder, a second push plate is arranged at the bottom of the second powder supply cylinder, and the first push plate and the second push plate can move linearly up and down. Based on process characteristics of selective laser