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3D printing device used for preparing aluminum matrix composite and printing method thereof

An aluminum-based composite material and 3D printing technology, applied in the field of 3D printing, can solve the problems of increasing the difficulty of laser 3D printing technology, enhancing the uneven distribution of particles, and increasing the cost of 3D printing, so as to reduce material costs, improve mechanical properties, and improve uniformity effect

Active Publication Date: 2020-03-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to solve the existing 3D printing technology (1) too high requirements for raw materials, the raw materials used in most technologies must be metal powder or metal wire or metal strip, which increases the cost of 3D printing; (2) Aluminum alloy has high light reflection properties, which increases the difficulty of laser 3D printing technology; (3) When the laser selection is printed layer by layer, the problem of uneven distribution of enhanced particles

Method used

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  • 3D printing device used for preparing aluminum matrix composite and printing method thereof
  • 3D printing device used for preparing aluminum matrix composite and printing method thereof

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specific Embodiment approach 1

[0051] Specific implementation mode one: combine Figure 1 to Figure 2 Describe this embodiment, a 3D printing device for preparing aluminum-based composite materials in this embodiment, which includes: an industrial control cabinet 1, an ultrasonic-assisted printing module 2, a material storage module 3 and a three-dimensional mobile module, the industrial control cabinet 1 Including the control of total power, heating power, temperature, argon switch and three-dimensional movement.

[0052] The ultrasonic auxiliary printing module 2 includes an ultrasonic transducer 21, a horn 22, a cooling water outlet 23, a cooling water inlet 24, an ultrasonic tool head 25, a printing nozzle 26, a second temperature sensor 27, and a Z-axis support 28 , the substrate 54 , the third temperature sensor 55 , the second heating module 62 and the third heating module 63 . The three-dimensional moving module includes a Z-axis synchronous motor 51 , a laser rangefinder 52 , an XY-axis synchronou...

specific Embodiment approach 2

[0055] Specific implementation mode two: combination figure 1 and figure 2 Describe this embodiment, the circular groove of the printing nozzle 26 of this embodiment is a spherical pit, the diameter of the spherical pit is 1 / 4-1 / 2 of the diameter of the ultrasonic tool head, and the spherical center of the spherical pit should be located below the plane of the printing nozzle 26, The distance is about 100-400μm, which is the ultrasonic gathering point, where high acoustic energy can be obtained, thereby obtaining a higher density cavitation bubble distribution, which is conducive to the rapid breaking of the oxide film and the separation of ceramic particles and metal liquid. Moisture bond. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0056] Specific implementation mode three: combination figure 1 and figure 2 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 base aluminum alloy raw materials without size limitation. By adjusting the flow rate of ceramic powder and aluminum alloy melt, different areas of aluminum matrix composite materials have different reinforcement phase content and aluminum matrix composite material with different reinforcement phase content. Adjustable printing.

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Abstract

The invention relates to a 3D printing device used for preparing aluminum matrix composite and a printing method thereof, and relates to 3D printing devices and printing methods. The 3D printing device used for preparing aluminum matrix composite and the printing method thereof aims to solve the problems that the cost of 3D printing is high, the difficulty of laser 3D printing technology is increased due to the high light reflection performance of the aluminum alloy; and the distribution of reinforcing particles are uneven when selective laser printing layer by layer. According to the 3D printing device used for preparing aluminum matrix composite and the printing method thereof, ceramic particles and liquid aluminum alloy melt are adopted as rapid forming materials and are respectively stored in two storage tanks, the powder flow is controlled through adjusting the rotating speed of a screw rod, the gas pressure is adjusted, so that the feeding and stopping of the aluminum alloy meltand the feeding amount are controlled, the ceramic particles and the liquid aluminum alloy melt are transported to a place to be printed through a feeding pipe and an ultrasonic pole nozzle, the liquid aluminum alloy melt infiltrates into the gap of the ceramic particles under the ultrasonic action and then seeps out to contact with the surface to be printed, and a connection is formed. The 3D printing device used for preparing aluminum matrix composite and the printing method thereof is used for the preparation of aluminum matrix composite reinforced by the ceramic particles.

Description

technical field [0001] The invention relates to a preparation technology of ceramic particle-reinforced aluminum-based composite materials, in particular to a 3D printing device and a printing method for preparing aluminum-based composite materials, which are used for preparing ceramic particle-reinforced aluminum-based composite materials. It belongs to the field of 3D printing technology. Background technique [0002] Ceramic particle-reinforced aluminum matrix composites with excellent properties such as high specific stiffness, low thermal expansion and high thermal conductivity have been widely used in aviation, aerospace, automotive, electronics and other fields. At present, the traditional and relatively mature preparation methods of aluminum matrix composites mainly include powder metallurgy, pressure casting, stirred casting, pressureless infiltration and spray deposition. For the parts prepared by aluminum matrix composite materials, they are all realized by milli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/115C22C21/00C22C1/04C22C1/10C22C32/00B33Y10/00B33Y30/00B33Y40/00B33Y70/10
CPCB22F3/115C22C21/00C22C1/10C22C32/0063B33Y10/00B33Y30/00B33Y40/00B33Y70/00
Inventor 许国敬于汉臣闫久春
Owner HARBIN INST OF TECH
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