Three-dimensional printing formation method based on induction heating and used for metal nanopowder

A nano-metal powder and three-dimensional printing technology, applied in the field of additive manufacturing, can solve the problems of inability to realize parallel molding, high energy consumption, and slow molding speed, and achieve the elimination of molding thermal stress problems, elimination of residual stress accumulation, and surface roughness Reduced effect
CN108380871AActive Publication Date: 2018-08-10山东承坤信息科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
山东承坤信息科技有限公司
Publication Date
2018-08-10

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Abstract

The invention provides a three-dimensional printing formation method based on induction heating and used for metal nanopowder. The three-dimensional printing formation method based on induction heating and used for the metal nanopowder comprises the steps that CAD data files, a formed substrate, the metal nanopowder and a nanopowder jet array plate for three-dimensional printing formation of a part are prepared; internal block-by-block filling is conducted on each closed outline pattern of each layer of slice; the formed substrate and a formed part are kept at a preset temperature through heating in a vacuum formation cavity; and slice data of the current slice are obtained, corresponding powder delivery nozzle jet valves are controlled to be opened according to corresponding small blocksformed after the current slice is cut, solidification occurs while the metal nanopowder is molten and molten metal is leveled, and the thicknesses of the corresponding small blocks are increased by acertain degree. According to the three-dimensional printing formation method based on induction heating and used for the metal nanopowder, the process thinking that the temperature of the formed substrate and the formed part is kept below the melting point of the blocks and above the melting point of the metal nanopowder is ingeniously utilized, a high-energy beam for assisting melting is not needed, and three-dimensional formation of ultra fine and ultra-high-speed parts is achieved based on the metal nanopowder.
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Description

technical field

[0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to an induction heating-based three-dimensional printing molding method of nanometer metal powder. Background technique

[0002] 3D printing (additive manufacturing) technology is actually a general term for a series of rapid prototyping technologies for parts. The coordinates discontinuously make the displacement of the thickness of the layer, and finally form a three-dimensional workpiece. The current rapid prototyping technologies on the market are divided into 3DP technology, FDM fusion lamination molding technology, SLA stereolithography technology, SLS selective laser sintering technology, DLP laser forming technology and UV ultraviolet forming technology.

[0003] Due to the high melting point of metals, 3D printing technology for metal materials requires high-energy-density laser beams or electron beams as heat sources. With the development of sc...

Claims

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