Metal ceramic composite material additional material manufacturing device and production method thereof

Abstract

The invention provides a metal ceramic composite material additional material manufacturing device and a production method thereof. The manufacturing device comprises a wire feeding spraying head, a raw material extruding device and a laser generator. The raw material extruding device comprises a slurry groove and an extruding disc arranged in the slurry groove. The slurry groove is provided with a material guide pipe. The material extruding disc is provided with a material guide rod for the material guide pipe to penetrate. An extruding assembly used for pushing the extruding disc to move towards one side of the slurry groove is further connected to the extruding disc. After slurry enters the slurry groove, the extruding assembly pushes the extruding disc to move toward one side of the slurry groove, thus the slurry in the slurry groove enters the material guide pipe due to gravity and extruding force and flows out along the periphery side of the material guide rod, the situation that secondary particles are spontaneously gathered and formed on the surface of the slurry due to accumulated surface energy is avoided, the slurry shape and mobility of the slurry flowing out along the material guide rod meet the technology requirement, the wire feeding spraying head enables the particles to be collected to one point, the slurry forms a molten bath through a laser generator, and the slurry is piled up gradually in space to form an entity of the metal ceramic composite material.

Description

technical field [0001] The invention relates to the technical field of metal matrix composite materials, in particular to a metal-ceramic composite material additive manufacturing device and a production method thereof. Background technique [0002] Metal-ceramic composites have some advantages of metal matrix materials and ceramic reinforcing materials, such as the toughness and bending resistance of the former, and the high temperature resistance, high strength and oxidation resistance of the latter. At present, the preparation method of metal-ceramic composite materials often adopts traditional casting method or powder metallurgy method supplemented by machining method. The traditional melting and casting method has problems such as slow solidification rate of the melt, and it is difficult to directly control the morphology, quantity and distribution of the reinforcement phase in the casting mold. [0003] As a material rapid prototyping method, laser additive manufactur...

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Problems solved by technology

[0004] However, for metal or ceramic powders in most industrial occasions, particles adhere to adjacent particles and sometimes form chains or more complex shapes, which have poor fluidity, especially at submicron or even nanoscale ultrafine particles. Fine powder, because of its developed surface area stores high surface energy, it is easy to spontaneously aggregate into secondary particles, its shape and fluidity obviously cannot meet the technical requirements of LENS, and there are improvements in the existing technology

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