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3D printing method for selective deposition of uniform metal droplets

A 3D printing and uniform technology, which is applied in the field of 3D printing of uniform metal droplet selective deposition, can solve the problems of poor printing accuracy, improve stability and printing accuracy, avoid the accumulation of heat and thermal stress, reduce deformation effect

Active Publication Date: 2019-01-08
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of poor printing accuracy of the existing uniform metal droplet deposition 3D printing method, the present invention provides a 3D printing method for uniform metal droplet selective deposition

Method used

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  • 3D printing method for selective deposition of uniform metal droplets
  • 3D printing method for selective deposition of uniform metal droplets
  • 3D printing method for selective deposition of uniform metal droplets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: refer to figure 2 , using the 3D printing method of selective deposition of uniform metal droplets to print metal wires with smooth surface and accurate size on the substrate. When printing a shaped metal wire, it is first necessary to print uniform metal droplets 3 with a lower temperature. The substrate heating device 5 and the droplet ejection heating device 2 are turned on, and the substrate 6 and the uniform droplet ejection device 1 are heated to a predetermined temperature. Afterwards, adjust the temperature of the uniform droplet ejection device 1 and the temperature of the substrate 6, use the uniform droplet ejection device 1 to print uniform metal droplets 3, and print out A row of uniform metal micro-droplets 3 is deposited and spread until the uniform metal micro-droplets 3 are cooled and solidified, thereby forming metal bumps 4 in an array at equal intervals. Then, the relative position between the substrate 6 and the uniform droplet ejec...

Embodiment 2

[0020] Embodiment 2: refer to image 3 , using the 3D printing method of selective deposition of uniform metal droplets to print a metal sheet with a smooth surface and accurate dimensions on the substrate. When printing and forming a thin metal plate, it is first necessary to print uniform metal droplets 3 with lower temperature on the substrate 6 in the form of row by row and column by column with equal spacing under the condition of optimal droplet spacing, thereby forming The metal bumps 4 on the array, this process is basically the same as the steps in the method embodiment 1. Afterwards, adjust the relative position between the substrate 6 and the uniform droplet ejection device 1 , and position it in the middle of the intersecting gap between every two rows of metal bumps 4 and every two rows of metal bumps 4 . At this time, the pulse laser 7 is turned on and synchronized with the uniform droplet ejection device 1. After the laser beam 9 is focused by the lens 8, it ac...

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Abstract

The invention discloses a 3D printing method by field and direction selection deposition of uniform metal microdroplets, the 3D printing method is used to solve the technical problem that the existing 3D printing method by the deposition of the uniform metal microdroplets is poor in printing precision. According to the 3D printing method, the metal microdroplets at a low temperature are printed at a large distance to allow a printing track of the metal microdroplets to be formed by a discrete bump sequence, then according to the shape requirement of a printing piece, direction selection deposition of high-temperature microdroplets is carried out among discrete bumps, by utilizing a surface tension capillary expansion mechanism of the high-temperature microdroplets at the anchored bumps, complete filling of the bump gaps is realized, and no thermal stress, thermal deformation or a local deposition defect is accumulated, thereby meeting the requirement of a metal part on high shape and dimension precision and the requirement on the stability in a printing process.

Description

technical field [0001] The invention relates to a 3D printing method for uniform metal droplet deposition, in particular to a 3D printing method for uniform metal droplet selective deposition. Background technique [0002] Uniform metal droplet on-demand printing technology has broad application prospects in the fields of rapid preparation of electronic circuits and additive manufacturing of complex parts. This technology is based on the principle of discrete and stacked formation, with metal droplets as the basic deposition unit, forming uniform metal wires, induction coils or solid parts through the accumulation of droplets drop by drop. Compared with other metal additive manufacturing methods, the uniform metal droplet on-demand printing technology has the advantages of low equipment and forming costs, a wide range of raw material sources, low energy consumption requirements, and high forming efficiency. It has been widely used in parts additive manufacturing and rapid 3...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/115
CPCB22F3/115
Inventor 罗俊王文强齐乐华张代聪伊浩杨方
Owner NORTHWESTERN POLYTECHNICAL UNIV
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