Powder recovery device suitable for laser metal forming process

Abstract

The invention discloses a powder recovery device suitable for the laser metal forming process. One route of powder clearing gas of a powder clearing module is divided into two routes of gas after passing through a three-position two-way solenoid valve and enters a powder clearing gas passage of a powder feeding nozzle; a forming substrate is installed on a porous working table of a powder conveying and filtering module, a powder recovery funnel is installed on the lower portion of the porous working table, a powder recovery passage is installed on the lower portion of the funnel, and a drawer-type bladeless fan, a low-number mesh screen and a high-number mesh screen are detachably installed in the recovery passage in sequence; a powder recovery bag installation seat, a powder blocking plate and a powder recovery bag of a powder collecting module are installed at the tail end of the recovery passage. The powder recovery device suitable for the laser metal forming process can be used for the field of laser metal forming, integration of powder collecting, screening and recycling in the laser metal forming process is achieved, the powder utilization rate is increased, and the cost of the laser metal forming technology is reduced; the probability that people make contact with powder during powder cleaning after processing is completed is reduced, and the safety of operators during processing is guaranteed.

Description

technical field [0001] The invention belongs to the field of laser metal forming, in particular to a powder recovery device used in the process of laser metal forming. Background technique [0002] Laser metal forming technology is a kind of additive manufacturing technology. The process is that the laser forms a molten pool on the surface of the formed substrate. The powder feeding system sends the metal powder into the molten pool for melting. As the molten pool moves from point to line, from line To surface, surface and surface superimposed to form a solid part. Due to the small size and fast cooling of the laser molten pool, the metal powder cannot completely enter the molten pool for melting, and part of the powder is scattered outside the molten pool, which makes the utilization rate of the powder low. In order to improve the utilization rate of materials, it is very meaningful to collect and screen the scattered powder for reuse. At present, the recovery of laser me...

AI Technical Summary

Problems solved by technology

However, the particle size of the metal powder used for laser metal direct forming is only tens of microns, and it can enter the human body in various ways, which is extremely difficult to protect, and the metal powder causes great harm to human health.

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