SLM3D printing powder discharging device and using method

Abstract

The SLM3D printing powder discharging device comprises a first box body, the top of the first box body communicates with the outside, a second box body is fixedly installed on the inner wall of the bottom of the first box body, a working cavity and a transmission cavity are formed in the second box body, a containing box with the top communicating with the outside is arranged above the second box body, and through holes are formed in the bottom of the containing box in an array mode; the 3D printer has the beneficial effects that the 3D printer is simple in structure and easy and convenient to operate, powder in a workpiece container can be automatically removed after printing of each layer is finished, brand-new powder is filled, automatic flattening is carried out, then next-time printing is carried out, and the 3D printer is high in practicability and high in practicability. In this way, sintered powder is prevented from being mixed into a new printing layer, labor consumption is greatly reduced, and the device is simple, efficient, convenient, rapid and high in practicability.

Description

technical field [0001] The invention relates to the technical field of SLM3D printing, in particular to an SLM3D printing powder unloading device and a method of use. Background technique [0002] At present, SLM is a main technical approach in the additive manufacturing of metal materials. This technology uses laser as the energy source, and scans the metal powder bed layer by layer according to the path planned in the 3D CAD slice model. The scanned metal powder achieves the effect of metallurgical bonding through melting and solidification, and finally obtains the model designed. metal parts. SLM technology overcomes the troubles caused by traditional technology to manufacture metal parts with complex shapes. It can directly form metal parts that are nearly fully dense and have good mechanical properties. 3D printing is realized mainly through the mutual matching of the three structural components of the pressure roller, the laser, and the workbench. The powder is spre...

AI Technical Summary

Problems solved by technology

After scanning, the workbench is lowered, and the pressure roller is covered with a new layer of powder, which is scanned again by the laser and bonded with the previous layer of solidified part. The same step is repeated, and the finished product is finally printed. One defect is that the powder outside the workpiece is often partially sintered during laser selective sintering, and the sintering is not complete. With the subsequent powder stacking, these sintered metal particles will be mixed into the new layer. The powder is sintered by the laser for a second time, which will have a considerable impact on the mechanical properties of the workpiece, such as stress and strength. Therefore, the best way is to empty all the Powder and refill with new powder, but this method requires manual operation and is very troublesome

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