The invention relates to the technical field of
metal additive manufacturing, in particular to an additive manufacturing method of an integrated
injector. The additive manufacturing method is
selective laser melting forming, and the forming method comprises the implementation steps of: determining a support adding part; designing a supporting structure; forming a printing model; selecting forming parameters for program
subdivision, and selecting entity support, block support,
surface layer and entity forming parameters of the
injector for program
subdivision; importing into a printer, namely importing a program
package endowed with the forming parameters into the printer; filling the printer with
powder raw materials, and installing a scraper; conducting gas washing on a printing bin, and introducing
atmosphere into the printing bin for gas washing; and starting the printer, spreading
powder by a scraper, and carrying out printing. According to the additive manufacturing method, the safety problems of high requirement on
welding precision, strict requirement on sealing effect, easy occurrence of deformation and incoordination, leakage and the like in a manufacturing method for forming an
assembly by a plurality of parts through assembling,
welding and the like in an
injector structure are solved.