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Liquid metal wire for 3D printing and preparation method thereof

A liquid metal, 3D printing technology, applied in the field of 3D printing, can solve the problems that liquid metal cannot be applied to 3D printers and cannot be applied on a large scale, so as to suppress dynamic recovery or recrystallization, improve strength and mechanical properties, and reduce manufacturing costs. Effect

Active Publication Date: 2019-06-07
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the liquid metal in the prior art cannot be applied to conventional 3D printers and cannot be applied on a large scale, this application proposes a metal wire suitable for conventional 3D printers

Method used

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  • Liquid metal wire for 3D printing and preparation method thereof
  • Liquid metal wire for 3D printing and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] This embodiment relates to a method for preparing a liquid metal wire, comprising the following steps (see the flow chart for the figure 1 ):

[0042] 1) Mix pure bismuth, indium, tin and zinc metals in a mass ratio of 35:48.6:15.9:0.4 to prepare 1kg of raw materials with an alloy melting point of about 58°C, and then place the raw materials in a vacuum melting furnace and heat them to 200°C for melting , and the solution was stirred occasionally. Keep argon flowing during the entire stirring process to avoid oxidation of the melt; after melting, cast the alloy into a round rod with a diameter of 20mm, and place the round rod in liquid nitrogen to cool until the temperature is -10°C;

[0043] 2) After the cooling treatment, the round bar is passed through a rolling mill to roll the alloy into a bar with a diameter of 6mm, and the rolling deformation of each pass is 15%, and the bar should be put back into liquid nitrogen for low-temperature heat preservation between pa...

Embodiment 2

[0046] This embodiment relates to a method for preparing a liquid metal wire, comprising the following steps:

[0047]1) Prepare pure bismuth, indium and tin metal with a mass ratio of 53.6:30.3:16.1 to make 1 kg of raw material with an alloy melting point of about 83°C, then place the raw material in a vacuum melting furnace and heat it to 300°C for melting, and occasionally smelt the solution Stir. Keep argon flowing throughout the stirring process to avoid oxidation of the melt. After the smelting is completed, the alloy is cast into a round rod with a diameter of 20mm, and the round rod is cooled in liquid nitrogen until the temperature is -20°C;

[0048] 2) The processed round bar is passed through a rolling mill to roll the alloy into a bar with a diameter of 4 mm, and the rolling deformation in each pass is 10%, and the bar should be put back into liquid nitrogen for low-temperature heat preservation between passes. In order to avoid the reduction of bar strength caus...

Embodiment 3

[0051] This embodiment relates to a method for preparing a liquid metal wire, comprising the following steps:

[0052] 1) Prepare 1 kg of raw material with an alloy melting point of about 74°C with pure bismuth and indium metal at a mass ratio of 34:66, then place the raw material in a vacuum melting furnace and heat it to 230°C for melting, and stir the solution from time to time. Keep argon flowing throughout the stirring process to avoid oxidation of the melt. After the smelting is completed, the alloy is cast into a round rod with a diameter of 20mm, and the round rod is cooled in liquid nitrogen until the temperature is -30°C;

[0053] 2) The processed round bar is passed through a rolling mill to roll the alloy into a bar with a diameter of 8 mm, and the rolling deformation in each pass is 5%, and the bar should be put back into liquid nitrogen for low-temperature heat preservation between passes. In order to avoid the reduction of bar strength caused by the increase of...

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Abstract

The invention relates to the field of the 3D printing technology, in particular to a liquid metal wire for 3D printing and a preparation method thereof. The preparation method of the wire comprises the steps of rolling and drawing, and liquid metal is kept at a low temperature in the two steps. The wire provided by the invention can be mass-produced with existing industrial equipment, thereby facilitating industrial use. Moreover, the method for the wire provided by the invention can effectively improve the strength and mechanical properties of the wire, the wire is directly applicable to a conventional 3D printer, and therefore the use range of the liquid metal in 3D printing can be greatly expanded.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a 3D printing wire and a preparation method thereof. Background technique [0002] 3D printing technology first appeared in the 20th century. In recent years, it has become a worldwide research hotspot with its huge application potential. There are many different technologies for 3D printing, such as Fused Deposition Modeling (FDM), Selective Laser Sintering (SLS), Stereolithography (SLA), Laminated Object Manufacturing, LOM) and so on. Among these methods, the fused deposition method is the most widely used 3D printing technology. Its basic principle is: heating the hot-melt wire to a molten state, extruding it through the nozzle and spraying it on the solidified material layer, from top to bottom Layer by layer and solidify to shape. At present, the materials commonly used in the FDM process are thermoplastic materials, such as ABS, PLA, etc. These materials ...

Claims

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Application Information

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IPC IPC(8): B22F3/00B33Y70/00B21C37/04B22F10/22
Inventor 史金涛刘静
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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