A controllable electromagnetic shielding component and its preparation method
A technology of electromagnetic shielding and components, applied in the fields of magnetic/electric field shielding, electrical components, additive manufacturing, etc., can solve the problems of time-consuming and labor-consuming controllable electromagnetic shielding, complex manufacturing process, poor impact resistance, etc., and shorten the production cycle , easy to control, good impact resistance effect
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Embodiment 1
[0045] Use the 3D drawing software Solidworks 2018 to draw out figure 1 , 2 The shown three-dimensional minimal surface (TPMS) unit cell is 5×5×5mm, arrayed 4, 4, and 4 along the three directions of x, y, and z, and finally forms a three-dimensional lattice structure of 20×20×20mm, respectively in the three-dimensional lattice A 20×20×1mm cuboid is drawn on the top and bottom of the structure. The three structures are promoted to form a complete three-dimensional lattice structure part through the union operation.
[0046] The three-dimensional lattice structure is sliced by three-dimensional slicing software, the stl file of layered slices is output and the information is input into the control software of the equipment.
[0047] The SLM process adopts a single material falling powder, and the powder cylinder is filled with Cu-36.39Zn-2.25Al-0.5Zr-0.36Si alloy powder, in which the Zn content is 36.69wt%, the Al content is 2.25wt%, and the Zr content is 0.5 wt%, the conte...
Embodiment 2
[0063] S1 Construct the part model of the controllable electromagnetic shielding component and perform slice processing;
[0064] S2 uses Cu-Zn-Al memory alloy as raw material, in which the content of Zn is 33wt%, the content of Al is 3.5wt%, the content of Zr is 1wt%, and the content of Si is 0.6wt%. It uses laser selective melting technology to print layer by layer. The average particle size of the powder is 30μm, the laser power is 340W, the scanning speed is 500mm / s, and the laser power density is 300J / mm 3 , the drop height of each layer of the SLM forming part is 0.03mm, and finally the formed part is made;
[0065] S3 performs driving training on the shaped part, so that it can be compressed or recovered in the vertical direction under the control of the external temperature, so as to manufacture the controllable electromagnetic shielding member.
Embodiment 3
[0067] S1 Construct the part model of the controllable electromagnetic shielding component and perform slice processing;
[0068] S2 uses Cu-Zn-Al memory alloy as raw material, in which the content of Zn is 38wt%, the content of Al is 2wt%, the content of Zr is 0.2wt%, and the content of Si is 0.1wt%. It uses laser selective melting technology to print layer by layer. The average particle size of the powder is 30μm, the laser power is 280W, the scanning speed is 400mm / s, and the laser power density is 250J / mm 3 , the height of each layer of the SLM forming part is 0.045mm, and finally the formed part is made;
[0069] S3 performs driving training on the shaped part, so that it can be compressed or recovered in the vertical direction under the control of the external temperature, so as to manufacture the controllable electromagnetic shielding member.
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