Additive manufacturing device and method

Abstract

The invention discloses an additive manufacturing device and method. The device comprises an electron beam generating device and a forming chamber. The electron beam generating device is located above the forming chamber and used for generating rays used for melting powder materials. The forming chamber is used for providing a closed cavity needed by manufacturing. The forming chamber is further internally provided with a powder receiving box and powder tanks. The powder receiving box is arranged at the position of outlets below the powder tanks and used for receiving powder materials discharged out of the powder tanks and carrying out pretreatment. The pretreatment method comprises the step of pouring out the powder materials after heating the powder materials to the preset temperature. In the additive manufacturing method, powder is pretreated layer by layer in the layer-to-layer powder laying process; and powder material pretreatment occupies no extra time, and the additive manufacturing efficiency is not lowered. According to the additive manufacturing device, the powder materials heated every time has the thickness of one layer, material consumption is small, and water is more thoroughly removed.

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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