Additive manufacturing device and method

Abstract

The invention discloses an additive manufacturing device and method, the device includes an electron beam generating device and a forming chamber, the electron beam generating device is located above the forming chamber, and the electron beam generating device is used to generate molten powder materials Ray, the forming chamber is used to provide the airtight chamber required for manufacturing; the forming chamber also includes a powder receiving box and a powder box, and the powder receiving box is arranged at the outlet below the powder box for The powder material delivered from the powder box is accepted and pretreated, and the pretreatment includes heating the powder material to a predetermined temperature and pouring out the powder material. In the additive manufacturing method of the present invention, during the layer-by-layer powder spreading process, the powder is pretreated layer by layer; the pretreatment of the powder material does not take extra time and does not reduce the efficiency of additive manufacturing. In the additive manufacturing device of the present invention, the powder material heated each time is equal to the material of a layer thickness, the amount of material is small, and the water removal is more thorough.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to an additive manufacturing device and method. The additive manufacturing device and method for pretreatment of materials can pretreat the powder layer by layer during the process of additive manufacturing powder layer by layer. The pretreatment of powder materials does not take up extra time and does not reduce the additive manufacturing process. manufacturing efficiency. Background technique [0002] Additive manufacturing (3D printing) is a manufacturing technique that builds three-dimensional objects by successively fusing more than one thin layer of material. Powder bed additive manufacturing is a kind of additive manufacturing technology route. Its basic process steps are as follows: the powder supply and paving system spreads the powder material into a thin layer on the working platform, and the high energy density beam (laser or Electron beam) scans a section of the ...

AI Technical Summary

Problems solved by technology

[0004] One is that it takes a long time to bake to completely remove moisture, which takes a long time;

[0005] The second is that the moisture is not removed completely, especially the powder material located in the center of the container, and the moisture is difficult to be removed by heating

However, if the amount of powder is relatively large, the pretreatment takes a long time, and it takes a long time to start additive manufacturing, which is not conducive to the improvement of manufacturing efficiency.

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