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

A powder core wire and laser additive technology are applied in the field of laser additive manufacturing materials and their preparation, rare earth-enhanced FeMnSi micro-nano powder core wires and their preparation fields, and can solve the shape memory function. Loss and other problems, to achieve the effect of enhancing shape memory function, reducing burning loss, and inhibiting function loss

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

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Problems solved by technology

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

Method used

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

Examples

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example 1

[0032] This embodiment takes the preparation of 1000g of silicon boride-enhanced FeMnSi micro-nano powder core wire material for laser additive manufacturing as an example, and prepares 300g of manganese-silicon alloy powder with a particle size of 50-75 microns by mechanical alloying according to the required proportion ( Among them, 270 grams of manganese and 30 grams of silicon), and then disperse 30g of nano-cerium oxide powder (particle size: 30nm) in an 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 Medium ball mill compound to obtain such as figure 1 330 g of micro-nano composite powder with a core-shell structure with micron powder as the core and nano-powder as the shell shown. Select 670g of pure iron 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 fi...

example 2

[0037] This embodiment takes the preparation of 1000g of silicon boride-enhanced FeMnSi micro-nano powder core wire material for laser additive manufacturing as an example, and prepares 280g of manganese-silicon alloy powder with a particle size of 50-75 microns by mechanical alloying according to the required proportion ( Among them, 240.8 grams of manganese and 39.2 grams of silicon), and then disperse 40g of nano-La oxide powder (particle size is 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 Medium ball mill compound to obtain such as figure 1 320g of micro-nano composite powder with a core-shell structure in which the micron powder is the core and the nano powder is the shell. Select 680g of pure iron 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 i...

example 3

[0040] This embodiment takes the preparation of 1000g of silicon boride-enhanced FeMnSi micro-nano powder core wire material for laser additive manufacturing as an example, and prepares 360g of manganese-silicon alloy powder with a particle size of 50-75 microns by mechanical alloying according to the required proportion ( Among them, 349.2 grams of manganese, 10.8 grams of silicon), and then disperse 20g of nano Ce oxide powder (also Pr or Nd) (particle size is 80nm) in the alcohol-water mixed solution with a volume ratio of 1:1 to prepare a nano-suspension , put the two together in a ball mill and ball mill compound to obtain such figure 1 380g of micro-nano composite powder with a core-shell structure in which the micron powder is the core and the nano powder is the shell. Select 620g of pure iron 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...

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Abstract

A rare earth-enhanced FeMnSi micro-nano powder core wire material for laser additive manufacturing and its preparation method, characterized in that the powder core wire material is made of 28% to 36% of the entire powder core wire material and its components are manganese and silicon Rare earth reinforced micro-nano powder core composed of micron powder and rare earth nanopowder whose mass accounts for 2%~4% of the entire powder core wire material and iron sheet whose mass accounts for 60%~70% of the entire powder core wire material, the sum of each component It 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 FeMnSi 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, and relates to a material for laser additive manufacturing and a preparation method thereof, in particular to a rare earth-enhanced FeMnSi 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] Fe-based shape memory alloys were developed later than Ni-Ti and Cu-based shape memory ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B33Y70/00B22F3/105
CPCB22F1/00B33Y70/00B22F10/00B22F10/25Y02P10/25
Inventor 王宏宇丁扬朱长顺陈特孙永毅
Owner JIANGSU UNIV
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