The invention discloses a precision-molding method for a metal part additive. The method comprises the following steps: step 1, dividing the surface of a metal part into a surface to be processed anda non-machined surface, and manufacturing a casting mold corresponding to the non-machined surface, wherein the casting mold is manufactured by 3D printing and molding; step 2, by adopting a uniform metal droplet ejection technology, spraying metal droplets to a bottom plate of the casting mold layer by layer through a nozzle until the spraying is completed; step 3, molding, standing and cooling,demoulding and cleaning a molded part. According to the invention, by combining the casting mold through 3D printing and the uniform metal droplet spray forming technology, the metal part can be directly precision-molded, and the dimensional accuracy, surface quality, internal quality and quality stability of the molded metal part are high than those by traditional casting methods.

Wu Linbo

Papers

Precision-molding method for metal part additive