Recovery device for selective laser melting recovered powder

Abstract

The invention discloses a recovery device for selective laser melting recovered powder. The recovery device comprises a powder screening bin, a powder falling bin, a powder blowing bin and a base arranged in sequence from top to bottom; a screen is arranged in the powder screening bin; a flow dividing piece with a flow dividing hole is arranged between the powder falling bin and the powder blowingbin; one side of the powder blowing bin is connected with an intake pipe; the side wall, opposite to the intake pipe, of the powder blowing bin is connected with an exhaust pipe outwards extending; more than two classification holes are formed in the bottom of the exhaust pipe; the distances from the classification holes to the side wall of the powder blowing bin are different; and the lower parts of the classification holes are connected with powder collecting barrels. A ultrasonic generator is arranged at the bottom of the powder screening bin. Due to the density difference of waste slag and metal powder, proper gas flows are adopted to vertically blow the recovered powder, so that the falling distances of the waste slag and the metal powder are different to achieve effective separation, and high purity of the recovered powder is guaranteed. The recovery device is simple in structure, convenient to operate, suitable for recovery of various material recovered powder, high in safety coefficient and wide in application range.

Description

technical field [0001] The invention relates to the technical field of reclaiming recycled powder by laser selective melting, in particular to a recycling device for laser selective melting and recycled powder. Background technique [0002] Additive Manufacturing (AM) technology is a technology that uses the method of gradually accumulating materials to manufacture solid parts. Compared with the traditional material removal-cutting technology, it is a "bottom-up" manufacturing method. In the past two decades, AM technology has achieved rapid development. Different names such as "Rapid Prototyping", "3D Printing" and "Solid Free-form Fabrication" The method expresses the characteristics of this technology from different aspects. [0003] Selective Laser Melting (SLM) direct manufacturing technology, also known as metal 3D printing technology, is the cutting-edge technology of additive manufacturing. Before processing, first slice and discretize the CAD model of the part thr...

AI Technical Summary

Problems solved by technology

However, the recycled powder is mixed with metal waste slag generated during the processing, and these waste slags are of different shapes and sizes. Some of them can be separated from the metal powder through ordinary screening steps, and some of them cannot be separated from the metal powder due to their similar size to the metal powder. Separation from metal powder by sieving

The slag doped in the metal powder will become a hidden danger of component defects

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