Rare earth-enhanced cuznal micro-nano powder core wire material for laser additive manufacturing and preparation method thereof

A technology of powder core wire material and laser additive material, which is applied in the field of laser additive manufacturing materials and its preparation, rare earth-enhanced CuZnAl micro-nano powder core wire material for laser additive manufacturing and its preparation, and can solve the shape memory function Loss and other issues, to achieve the effect of enhancing shape memory function, inhibiting function loss, and reducing burning loss

Active Publication Date: 2019-12-03
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to invent a rare earth-enhanced CuZnAl micro-nano powder core wire material for laser additive manufacturing and its preparation method to solve the problem that the CuZnAl alloy laser additive manufacturing process is prone to relatively serious loss of shape memory function

Method used

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  • Rare earth-enhanced cuznal micro-nano powder core wire material for laser additive manufacturing and preparation method thereof
  • Rare earth-enhanced cuznal micro-nano powder core wire material for laser additive manufacturing and preparation method thereof

Examples

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Effect test

example 1

[0031] Taking the preparation of 1000g of rare earth-reinforced CuZnAl micro-nano powder core wire for laser additive manufacturing as an example, 290g of micron zinc-aluminum alloy powder (particle size of 60 microns, including 39.15 grams of micron aluminum powder) was prepared by mechanical alloying according to the required ratio. , micron zinc powder 250.85 g), and then 30 g of nano-cerium oxide powder (particle size 30 nm) was dispersed in an alcohol-water mixed solution with a volume ratio of 1:1 to prepare a nano-suspension, and the two were put into a ball mill together for ball milling Composite to obtain 320g micro-nano powder with micro-powder as the core and nano-powder as the core-shell structure (such as figure 1 ). Select 680g of pure copper strip with a width of 10mm and a thickness of 0.5mm, first roll it into a U shape, add the aforementioned micro-nano powder into the U-shaped groove and then close it, and pull it into a finished product with a diameter of ...

example 2

[0036] Taking the preparation of 1000g rare earth reinforced CuZnAl micro-nano powder core wire material for laser additive manufacturing as an example, 280g micron zinc-aluminum alloy powder (particle size is 50 microns, including 33.6 grams of micron aluminum powder) is prepared by mechanical alloying according to the required ratio , micron zinc powder 246.4 grams), and then disperse 20g of nano-cerium oxide powder (particle size: 50nm) in the alcohol-water mixed solution with a volume ratio of 1:1 to prepare a nano-suspension, and put the two together into a ball mill for ball milling Composite to obtain 300g of micro-nano powder with a core-shell structure with the micro-powder as the core and the nano-powder as the shell. Select 700g of pure copper strip with a width of 10mm and a thickness of 0.5mm, first roll it into a U shape, add the aforementioned micro-nano powder into the U-shaped groove and then close it, and pull it into a finished product with a diameter of 0.5m...

example 3

[0039] Taking the preparation of 1000g rare earth-enhanced CuZnAl micro-nano powder core wire for laser additive manufacturing as an example, prepare 300g micron zinc-aluminum alloy powder (particle size is 75 microns, including 45 grams of micron aluminum powder) by mechanical alloying according to the required ratio , 255 grams of micron zinc powder), and then disperse 40g of nano-cerium oxide powder (particle size: 50nm) in an alcohol-water mixed solution with a volume ratio of 1:1 to prepare a nanosuspension, and put the two together into a ball mill for ball milling Composite to obtain 340g of micro-nano-powder with micro-powder as the core and nano-powder as the core-shell structure. Select 660g of pure copper strip with a width of 10mm and a thickness of 0.5mm, first roll it into a U shape, add the aforementioned micro-nano powder into the U-shaped groove and then close it, and pull it into a finished powder with a diameter of 2mm by a drawing device Core wire.

[0040...

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Abstract

A rare-earth enhanced CuZnAl micro-nano powder core wire material for laser additive manufacturing and its preparation method, characterized in that the powder core wire material accounts for 28% to 30% of the entire powder core wire material by mass and is composed of zinc and aluminum Rare earth reinforced micro-nano powder core composed of rare earth micron powder and rare earth nano powder whose mass accounts for 2%~4% of the entire powder core wire material and copper skin whose mass accounts for 66%~70% of the entire powder core wire material. The sum is 100%, and its preparation method mainly includes micro-nano powder preparation, skin forming and powder filling, mouth closing and drawing into filaments. Using the CuZnAl micro-nano powder core wire material described in the present invention as a material for laser additive manufacturing has the characteristics of small loss of shape memory function and high forming accuracy, and avoids the low powder utilization rate that exists in the current powder as additive manufacturing materials. At the same time, it also solves the problem of using solid wire as an additive manufacturing material, which requires higher laser energy and is more likely to cause functional loss.

Description

technical field [0001] The invention belongs to the technical field of laser additive manufacturing, in particular to a material for laser additive manufacturing and a preparation method thereof, in particular to a rare earth-enhanced CuZnAl micro-nano powder core wire material for laser additive manufacturing and a preparation method thereof . Background technique [0002] Laser additive manufacturing technology refers to an advanced manufacturing technology that uses laser as an energy source and is based on the discrete-accumulation principle and driven by the three-dimensional data of the part to directly manufacture parts. However, the research and development of materials for laser additive manufacturing is still in its infancy, and there are relatively few types of materials that can be used, which greatly limits the wide application of this advanced manufacturing technology. [0003] CuZnAl alloy is a new type of functional memory material that emerged in the 1970s....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B33Y70/00B22F3/105
CPCB22F1/00B33Y70/00B22F10/00B22F10/18B22F10/25Y02P10/25B22F10/20
Inventor 袁晓明陈婷卓张祥王宏宇吴雪莲
Owner JIANGSU UNIV
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