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Rare earth enhanced FeMnSi micro-nano powder cored wire for laser additive manufacturing and preparation method thereof

A powder core wire, laser additive technology, applied in the directions of additive manufacturing, additive processing, process efficiency improvement, etc., can solve problems such as loss of shape memory function, and achieve enhancement of shape memory function, inhibition of function loss, and reduction of burnout. damage effect

Active Publication Date: 2018-10-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 FeMnSi micro-nano powder cored wire for laser additive manufacturing and preparation method thereof
  • Rare earth enhanced FeMnSi micro-nano powder cored wire for laser additive manufacturing 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 The compound obtained by medium ball milling is 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 in...

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 The compound obtained by medium ball milling is 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 pu...

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

The invention provides a rare earth enhanced FeMnSi micro-nano powder cored wire for laser additive manufacturing and a preparation method thereof. The rare earth enhanced FeMnSi micro-nano powder cored wire is characterized by consisting of micro powder of which the mass accounts for 28-36% of the whole powder cored wire and which comprises manganese and silicon, a rare earth enhanced micro-nanopowder core consisting of rare earth nano-powder of which the mass accounts for 2-4% of the whole powder cored wire, and iron sheets of which the mass accounts for 60-70% of the whole powder cored wire, and the total percent of all the components is 100%. The preparation method mainly comprises micro-nano powder preparation, scarfskin shaping, powder filling, closing and wire pulling. When used for laser additive manufacturing, the rare earth enhanced FeMnSi micro-nano powder cored wire has the characteristics of small loss of a shape memory function, high shaping precision and the like; the current problem of low powder utilization ratio caused when powder is taken as a material for additive manufacturing is solved; and meanwhile, the problems of functional loss and the like caused by thereason that high laser energy is required when a solid wire serves as the material for additive manufacturing are solved.

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 Applications(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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