Patent ID: 11007568

Abstract:
The present invention discloses a droplet generating method for metal three-dimensional printing, and in a process of accumulating a liquid metal or softened flowable metal in a building process through metal three-dimensional printing, a metal flow is fragmentized to form metal droplets; wherein in the process of accumulating the liquid metal or softened flowable metal, a current is applied between the metal flow and a printed metal (7), through a manner of resistance heating, part of the metal flow is heated and gasified to fuse the metal flow, and the metal droplets are formed on the printed metal (7). In the present invention, in a building process through metal three-dimensional printing, metal droplets of a tiny volume can be generated rapidly, the control method is simple and the response speed is high; the common “dragging” problem of a molten raw material in an FDM three-dimensional printing technology is solved; a “metallurgical fusion” is realized between the generated metal droplets and the printed metal (7), and the connection strength is extremely high; and “metallurgical electrical field-based regulation” can be integrated into a building process through metal three-dimensional printing.