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

A powder core wire material and laser additive technology, which is applied in the direction of additive manufacturing, additive processing, and process efficiency improvement, can solve the problems of loss of shape memory function, etc., and achieve enhanced shape memory function, reduced burning loss, and forming accuracy high effect

Active Publication Date: 2019-11-29
湖南麓邵技术服务有限公司
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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 silicon boride-enhanced FeMnSi micro-nano powder core wire material for laser additive manufacturing and its preparation method

Method used

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

Examples

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Effect test

example 1

[0033] This example takes the preparation of 1000g of micro-nano powder core wire as an example, and prepares 300g of manganese-silicon alloy powder (including 270 grams of manganese and 30 grams of silicon) with a particle size of 50-75 microns by mechanical alloying according to the required ratio, and then 30g of silicon boride nanopowder with a particle size of 30-80nm is dispersed in ethanol to prepare a nanosuspension, and the two are put into a ball mill together for ball milling to obtain 330g of micronano powder. 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 finished product with a diameter of 1.5mm by a drawing device Powder core wire.

[0034] Under the same laser process conditions, respectively adopt FeMnSi alloy powder with the same composition, FeMnSi solid wire material, and FeMnSi micro-nano powde...

example 2

[0038] In this example, taking the preparation of 1000g of micro-nano powder core wire material as an example, 280g of manganese-silicon alloy powder with a particle size of 50-75 microns (including 240.8 grams of manganese and 39.2 grams of silicon) was prepared by mechanical alloying according to the required ratio, and then 40g of silicon boride nanopowder with a particle size of 30-80nm is dispersed in ethanol to prepare a nanosuspension, and the two are put into a ball mill for ball milling to obtain 320g of micronanopowder. 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 into a finished product with a diameter of 0.5mm by a drawing device Powder core wire.

[0039] Under the same laser process conditions, respectively adopt FeMnSi alloy powder with the same composition, FeMnSi solid wire material, and FeMnSi micro-na...

example 3

[0041] In this example, taking the preparation of 1000g of micro-nano powder core wire material as an example, 360g of manganese-silicon alloy powder (including 349.2 grams of manganese and 10.8 grams of silicon) with a particle size of 50-75 microns was prepared by mechanical alloying according to the required ratio, and then 20g of silicon boride nanopowder with a particle size of 30-80nm is dispersed in ethanol to prepare a nanosuspension, and the two are put into a ball mill together for ball milling to obtain 380g of micronano powder. 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 the mouth, and pull it into a finished powder with a diameter of 2mm by a drawing device Core wire.

[0042] Under the same laser process conditions, respectively adopt FeMnSi alloy powder with the same composition, FeMnSi solid wire material, and FeMnSi m...

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Abstract

A silicon boride-enhanced FeMnSi micro-nano powder core wire material for laser additive manufacturing and a preparation method thereof, characterized in that the powder core wire material is composed of 28% to 36% of the entire powder core wire material and its composition is manganese Micro-nano powder core composed of silicon micron powder and silicon boride nano-powder 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, each component The sum is 100%, and its preparation method mainly includes preparation of micro-nano powder, skin forming and powder filling, jointing and drawing into silk. 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 silicon boride-enhanced FeMnSi micro-nano powder core wire material for laser additive manufacturing and its preparation method. 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 a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B33Y70/00B22F3/105
CPCB22F1/0003B33Y70/00B22F10/00B22F10/25Y02P10/25B22F10/20
Inventor 王宏宇丁扬袁晓明陈特孙永毅
Owner 湖南麓邵技术服务有限公司
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