Method for forming low-porosity multi-branch heat dissipation structure through metal droplet printing

• Main Authors: ZHANG DAICONG, QI LEHUA, LUO JUN, CUI JUNXING
• Format: Patent
• Language: Chinese; English
• Published: 14.06.2019
• 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 method for forming a low-porosity multi-branch heat dissipation structure through metal droplet printing. The technical problem that an existing branch heat dissipater preparation method is poor in practicability is solved. According to the technical scheme, metal liquid droplets are produced based on the jet fracture theory, the complex three-dimensional multi-branch profiled heat dissipation structure with the controllable shape and dimension is printed point by point layer by layer by controlling jet of liquid droplets and movement of a movement base plate according to path planning of the profiled heat dissipation structure; and the solidification behavior of the liquid droplets is cooperatively controlled, and the internal quality of the metal droplets is optimized. The limitation that a special manufacturing tool is needed for the profiled structure is avoided, the multi-branch heat dissipation structure is formed through printing of multiple metal liquid droplets, the internal