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Aluminum alloy ultrasonic-assisted 3D printing device and printing method thereof

An ultrasonic-assisted, 3D printing technology, applied in the field of 3D printing, can solve the problems of unfavorable properties of metal materials, inability to use ultrasound to promote the wetting and bonding of liquid metals, etc., and achieve high mechanical properties, consistent properties, and improved parts accuracy.

Active Publication Date: 2020-02-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem that the existing ultrasound-assisted liquid bimetal direct 3D printing device and method not only cannot play the role of ultrasound in promoting the wetting and bonding of liquid metal, but also is not conducive to obtaining metal materials with consistent properties

Method used

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  • Aluminum alloy ultrasonic-assisted 3D printing device and printing method thereof
  • Aluminum alloy ultrasonic-assisted 3D printing device and printing method thereof
  • Aluminum alloy ultrasonic-assisted 3D printing device and printing method thereof

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Experimental program
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specific Embodiment approach 1

[0043] Specific implementation mode one: combine Figure 1 to Figure 4 Describe this embodiment. The aluminum alloy ultrasonic-assisted 3D printing device in this embodiment includes an industrial control cabinet 1, an ultrasonic-assisted printing module, a storage and delivery module, and a three-dimensional mobile module. The industrial control cabinet is the computer control system of the entire device, and the ultrasonic-assisted printing module, The metal storage tanks 31 of the material storage and conveying module are all fixed on the three-dimensional mobile module to realize three-dimensional printing.

[0044] The ultrasonic auxiliary printing module includes an ultrasonic transducer 21, a cooling water outlet 22, a cooling water inlet 23, a horn 24, an ultrasonic tool head 25, a nozzle 26, a substrate 43, a first temperature sensor 27, and a third temperature sensor 47 , an aluminum alloy part 51, a first heating module 61, a third heating module 63 and a heat insul...

specific Embodiment approach 2

[0047] Specific implementation mode two: combination image 3 and Figure 4 Describe this embodiment, the nozzle 26 on the ultrasonic tool head 25 of this embodiment, the diameter range of the liquid metal outflow pipe at the printing nozzle is 20 μm-1000 μm, the outflow pipe in the printing nozzle and the plane 262 transition with a round chamfer 261, the circle The radius of the chamfer 261 is 50-600 μm. With the movement of the platform, the round chamfer 262 can make the transition of the extrusion process smoother. At the same time, due to the limited distance of the ultrasonic action, the printing distance is generally 100-300 μm. In such a narrow gap The liquid metal tends to flow downward to the plane 262, and the squeezed liquid metal is in close contact with the plane 262. The plane 262 inputs ultrasonic waves into the liquid metal to produce a cavitation effect, and quickly breaks the oxide film on the aluminum surface at a low temperature. micro-fused connection. ...

specific Embodiment approach 3

[0048] Specific implementation mode three: combination Figure 1 to Figure 4 Describe this embodiment. This embodiment provides an ultrasonic-assisted 3D printing method for aluminum-based composite materials. The method selects a temperature 20-100°C higher than the melting point of the metal material to be printed as the printing temperature, and the preheating temperature of the substrate It is 50-200°C lower than the melting point of metal materials, and the printing speed is 5-20cm / min. It can realize the printing of aluminum alloys and parts that are not limited by the size of aluminum alloy raw materials.

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Abstract

The invention discloses an aluminum alloy ultrasonic-assisted 3D printing device and a printing method thereof, and relates to a 3D printing device and a printing method. The problems that according to an existing ultrasonic-assisted liquid bimetal direct 3D printing device and method, the effect of promoting wetting and combining of liquid metal by ultrasonic waves cannot be achieved, and in addition, metal materials consistent in property cannot be advantageously obtained are solved. Powdery or block-shaped pure aluminum or aluminum alloy metal is used as a raw material to be put in a storage tank, after the raw material is heated to be melted, certain gas pressure is applied, the liquid metal is made to flow towards a nozzle through gas extrusion force, and after the liquid metal flowsout of the nozzle, an oxidation film on the surface of liquid aluminum and an oxidation film on the surface of a previous layer of aluminum or substrate aluminum are broken to achieve micro melting connection. According to the method, the temperature which is 20-100 DEG C higher than the melting point of a to-be-printed metal material is selected as the printing temperature, the preheating temperature of a substrate is 50-200 DEG C lower than the melting point of the metal material, and the printing speed is 5-20 cm / min. The aluminum alloy ultrasonic-assisted 3D printing device and the printing method thereof are used for aluminum alloy printing.

Description

technical field [0001] The invention relates to an ultrasonic 3D printing device and method, in particular to an aluminum alloy ultrasonic-assisted 3D printing device and a printing method thereof, belonging to the technical field of 3D printing. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. In recent years, this technology has developed rapidly, and it is mainly divided into stereolithography technology, fused lamination technology, 3D inkjet printing technology, selective laser sintering technology and layered solid manufacturing technology. [0003] Although 3D printing technology is developing rapidly at present, the 3D printing of aluminum alloys is still subject to great restrictions. Aluminum alloys have properties such as easy oxidation, high reflection an...

Claims

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Application Information

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IPC IPC(8): B22F3/115B33Y30/00B33Y10/00
CPCB22F3/115B22F2999/00B33Y10/00B33Y30/00B22F2202/01
Inventor 于汉臣许国敬闫久春
Owner HARBIN INST OF TECH
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