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Laser-assisted conformal 3D printing method for complex curved surface special-shaped structure

A complex curved surface, laser-assisted technology, applied in the improvement of process efficiency, additive manufacturing, transportation and packaging, etc., can solve the problems of low printing line width accuracy, difficult to achieve conformal manufacturing of complex non-expanded surface structure surface, etc., to achieve printing High precision, avoiding the effect of forming complex curved surface structures

Active Publication Date: 2021-06-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that the existing direct writing and other contact 3D printing technologies are difficult to achieve conformal manufacturing of complex non-expanded curved surface structure surfaces, and the problem of low accuracy of printing line width, and provides a laser-assisted conformal 3D printing of complex curved surface special-shaped structures Methods

Method used

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  • Laser-assisted conformal 3D printing method for complex curved surface special-shaped structure
  • Laser-assisted conformal 3D printing method for complex curved surface special-shaped structure
  • Laser-assisted conformal 3D printing method for complex curved surface special-shaped structure

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specific Embodiment approach 1

[0043] Specific Embodiment 1: In this embodiment, a laser-assisted method for conformal 3D printing of complex curved surfaces and special-shaped structures is carried out according to the following steps:

[0044] 1. Weighing:

[0045] Weigh 0.5 to 4 parts of photoinitiator, 0.5 to 4 parts of photosensitive resin monomer, 1 to 6 parts of binder, 0.5 to 5 parts of dispersant, and 50 to 85 parts of materials to be printed in parts by mass And 1 to 5 parts of solvent;

[0046] 2. Preparation of laser curing slurry:

[0047] Mix 0.5-4 parts of photoinitiator, 0.5-4 parts of photosensitive resin monomer, 1-5 parts of solvent, 1-6 parts of binder and 0.5-5 parts of dispersant to obtain photosensitive system materials, Then add the photosensitive system material to 50-85 parts of the material to be printed, and use a vacuum defoaming mixer to disperse evenly to obtain a laser-cured slurry;

[0048] 3. Coating:

[0049] Apply the laser-cured slurry evenly on the curved substrate,...

specific Embodiment approach 2

[0061]Specific embodiment two: the difference between this embodiment and specific embodiment one is that the photoinitiator described in step one is 2-hydroxyl-2-methyl-1-phenylacetone, 1-hydroxycyclohexylphenylmethanone Ketone, 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1-propanone, 2,4,6-trimethylbenzoyl-diphenyl phosphine oxide or ethyl 2,4,6-trimethylbenzoylphenyl phosphonate; the photosensitive resin monomer described in step one is acrylate; the solvent described in step one is ethyl acetate, acetic acid butyl ester or terpineol; the binder described in step one is polyvinyl butyral or ethyl cellulose; the dispersant described in step one is N-vinylpyrrolidone. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0062] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the material to be printed in step 1 is a mixture of one or both of ceramic powder and metal powder; The ceramic powder is one of silicon oxide, aluminum oxide, silicon nitride, calcium oxide, boron nitride and zirconia or a mixture of several of them; the metal powder is gold, silver, copper and tungsten one or a mixture of several of them. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a laser-assisted conformal 3D printing method for a complex curved surface special-shaped structure, and relates to a conformal 3D printing method for a curved surface special-shaped structure. The problems that conformal manufacturing of the surface of a complex non-unfolded curved surface structure is difficult to achieve and the printing line width precision is low in an existing direct writing type and other contact type 3D printing technologies are solved. The laser-assisted conformal 3D printing method comprises the following steps that 1, weighing is carried out; 2, laser curing slurry is prepared; 3, coating is carried out; 4, a laser and a base plate are fixed; 5, 3D laser printing is carried out; 6, cleaning is carried out; and 7, sintering is carried out. The laser-assisted conformal 3D printing method is used for laser-assisted conformal 3D printing of the complex curved surface special-shaped structure.

Description

technical field [0001] The invention relates to a method for conformal 3D printing of curved surface special-shaped structures. Background technique [0002] At present, the conformal manufacturing of complex curved surface structures has low molding accuracy. Direct writing 3D printing technology belongs to contact 3D printing. Its molding accuracy is greatly affected by the surface roughness of the curved substrate. The pitch of the curved substrate is inconsistent, which seriously affects the accuracy of the printing line width, and it is difficult to realize the conformal manufacturing and high-precision conformal 3D printing of the surface of the complex non-expanded curved surface structure. The photo-curing printing method is a flat base, which cannot realize the surface processing of the curved base. Contents of the invention [0003] The present invention aims to solve the problem that the existing direct writing and other contact 3D printing technologies are dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F1/00B22F10/28C04B35/622B33Y70/10B33Y10/00
CPCB22F3/105C04B35/622B33Y70/10B33Y10/00B22F1/10Y02P10/25
Inventor 杨治华周国相贾德昌周玉
Owner HARBIN INST OF TECH
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