A method and device for recovering residual powder on metal additive manufacturing substrates

Abstract

The invention discloses a method and device for recovering residual powder on metal additive manufacturing substrates, comprising a sealed chamber, a pneumatic vibrator arranged outside the sealed chamber, and a vibrating clamp arranged on the inner wall of the sealed chamber for transmitting vibration Components, the vibrating clamping component is connected with a pneumatic vibrator, and the vibrating clamping component is used to clamp the substrate of the molded part and provide mechanical vibration to the substrate; the sealed chamber is provided with a high-pressure air gun and an inert gas inlet. The method and device can not only thoroughly remove the residual powder on the substrate, but also recycle the powder that has been sieved out of impurities, saving materials; since the entire recovery process is carried out under the protection of an inert gas, it can also prevent the powder from being oxidized and Moisture, to ensure that the original quality of the powder remains unchanged.

Description

technical field [0001] The invention relates to the field of additive manufacturing of powder materials, in particular to a method and device for recovering residual powder on metal additive manufacturing substrates. Background technique [0002] Additive manufacturing, also commonly known as 3D printing, is a technology that uses CAD design data to accumulate material layer by layer to manufacture solid parts. Compared with traditional material removal (cutting) technology, it is a "bottom-up" material accumulation process. Manufacturing method. Compared with traditional manufacturing technologies, additive manufacturing has the advantages of being able to form parts with complex shapes, high forming precision, and saving materials. [0003] The molding materials of additive manufacturing can be divided into three categories: powder materials, linear materials and liquid materials according to the different forms. Among them, powder molding materials include metal powder, ...

AI Technical Summary

Problems solved by technology

There are the following disadvantages in removing the residual powder like this: the first, when hitting the substrate with a hammer or blowing the substrate with compressed gas, the residual powder will rise and scatter around, polluting the environment and easily causing injury to operators; , such an operation method is difficult to completely remove the residual powder at the bottom of the part, and the flying powder cannot be recovered, which wastes materials; third, for active metal powders such as titanium alloys, if they are exposed to air, the powder will Oxidation occurs

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