Application No./Patent No.: 2018104142902 Application date: May 3, 2018.
Inventor/Designer: Xue Wei, Ji Xu, Cao Yu, Yang Huan, Ye Zongyi, Liu Wenwen, Pan Qiaofei.
The invention provides a direct-write metal three-dimensional printing forming method based on induction melting, which comprises the following steps: preparing CAD data files, forming substrates, metal powder and direct-write induction melting forming nozzles of three-dimensional printing forming parts; Filling the closed outline graphics of each slice with internal vector lines; Open the injection valve corresponding to the current slice, so that the metal powder flows out through the internal powder feeding channel, and then is rapidly heated and melted by the induction coil to form metal liquid droplets, which then almost vertically impact the current molding surface of the molding substrate; Along the track of the internal filling vector line segment, the direct-writing induction melting molding nozzle and the molding substrate are relatively displaced to form a continuous molding line segment which is consistent with the internal filling vector line segment, and the molding is completed by stacking layer by layer. According to the invention, the relative movement between the nozzle spray and the molding substrate is utilized for molding, the molding size is not limited, the precision molding of large-size parts can be realized, and flexibility and convenience are achieved, and the degree of freedom is large.
