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Metal matrix composite material used for 3D printing and preparation method thereof

A composite material and 3D printing technology, applied in the field of 3D printing materials, can solve the problems of uneven particle size distribution of metal powder, failure of products to obtain high-end applications, and reduced mechanical properties of materials, etc., to achieve narrow particle size distribution, good environmental benefits and Economic benefits and good liquidity

Active Publication Date: 2017-05-31
TSINGHUA INNOVATION CENT IN DONGGUAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, due to the uneven particle size distribution of the metal powder, the cooling crystallization process is complex and difficult to control, and crystal growth and dendrites will occur, which will definitely reduce the mechanical properties of the material, resulting in the failure of the product to obtain high-end applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) The mass percentages of Fe, Cr, Ni, Cu, Mn, Si, Mo, Nb, C, single crystal sapphire whiskers and lubricants are: Fe: 74, Cr: 12, Ni: 4, Cu: 3, Mn: 0.3 , Si: 0.3 , Mo: 0.2, Nb :0.15 , C:0.05, single crystal sapphire whisker: 1, paraffin: 5.

[0038] (2) Weigh 1000g of the mixed powder according to the above formula and add it to 1250ml of anhydrous ethanol, stir at a speed of 350r / min for 18 hours.

[0039] (3) Sonicate the above mixture for 10-30 minutes.

[0040] (4) Suction filter the uniformly dispersed mixture on a vacuum filter.

[0041] (5) Dry the mixed powder obtained by suction filtration in a drying oven at 80°C for 4-6 h for later use.

[0042] (6) Put the mixed powder in the argon protection device, and pre-introduce a certain flow rate of high-purity argon to make the oxygen content in the device cavity less than 40 μL / L.

[0043] (7) The operation program, through the laser automatic powder feeder, sprays the mixed powder into the molten pool generat...

Embodiment 2

[0045] (1) The mass percentages of Fe, Cr, Ni, Cu, Mn, Si, Mo, Nb, C, single crystal sapphire whiskers and lubricants are: Fe: 65, Cr: 12, Ni: 4, Cu: 3, Mn: 0.3 , Si: 0.3 , Mo: 0.2, Nb :0.15 , C:0.05, single crystal sapphire whisker: 5, paraffin: 10.

[0046] (2) Weigh 1000g of the mixed powder according to the above formula and add it to 1800ml of anhydrous ethanol, stir at a speed of 450r / min for 10 h.

[0047] (3) Sonicate the above mixture for 10-30 minutes.

[0048] (4) Suction filter the uniformly dispersed mixture on a vacuum filter.

[0049] (5) Dry the mixed powder obtained by suction filtration in a drying oven at 80°C for 4-6 h for later use.

[0050] (6) Put the mixed powder in the argon protection device, and pre-introduce a certain flow rate of high-purity argon to make the oxygen content in the device cavity less than 40 μL / L.

[0051] (7) The operation program, through the laser automatic powder feeder, sprays the mixed powder into the molten pool generated ...

Embodiment 3

[0053](1) The mass percentages of Fe, Cr, Ni, Cu, Mn, Si, Mo, Nb, C, single crystal sapphire whiskers and lubricants are: Fe: 60, Cr: 12, Ni: 4, Cu: 3, Mn: 0.3, Si: 0.3, Mo: 0.2, Nb: 0.15, C: 0.05, single crystal sapphire whisker: 10, paraffin: 10.

[0054] (2) Weigh 1000g of the mixed powder according to the above formula and add it to 2500ml of anhydrous ethanol, stir at a speed of 500r / min for 10 h.

[0055] (3) Sonicate the above mixture for 10-30 minutes.

[0056] (4) Suction filter the uniformly dispersed mixture on a vacuum filter.

[0057] (5) Dry the mixed powder obtained by suction filtration in a drying oven at 60°C for 4-6 h for later use.

[0058] (6) Put the mixed powder in the argon protection device, and pre-introduce a certain flow rate of high-purity argon to make the oxygen content in the device cavity less than 40 μL / L.

[0059] (7) The operation program, through the laser automatic powder feeder, sprays the mixed powder into the molten pool generated by...

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Abstract

The invention provides a metal matrix composite material used for 3D printing and a preparation method thereof. The metal matrix composite material used for 3D printing comprises, by weight, 30-80 parts of iron powder, 10-30 parts of auxiliary powder, 1-30 parts of monocrystal sapphire whiskers and 5-15 parts of lubricants. The auxiliary powder is a mixture of Cr, Ni, Cu, Mn, Si, Mo, Nb and C powder. The metal matrix composite material used for 3D printing has the various properties such as high strength, high-temperature resistance, oxidation resistance and corrosion resistance and is suitable for functional prototype parts and series parts (turbine engine combustion chambers, thin walls and complex parts) and widely applied to the fields of industry as well as aeronautics and astronautics.

Description

technical field [0001] The invention belongs to the field of 3D printing materials, and in particular relates to a metal matrix composite material for 3D printing and a preparation method thereof. Background technique [0002] Stainless steel material, high strength and toughness, suitable for functional prototypes and series parts, widely used in industry and aerospace. [0003] Single crystal sapphire whisker (Single crystal sapphire whisker, also known as single crystal sapphire fiber) is a single crystal alumina whisker with a certain aspect ratio, which has super mechanical strength, thermal shock resistance, small specific gravity, oxidation resistance, Excellent physical properties such as high wear resistance and high corrosion resistance. Single crystal sapphire whiskers are suitable as reinforcing components for ceramics, metals, plastics and rubbers. Therefore, single crystal sapphire whiskers become the best choice for the third generation of advanced composite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/105B33Y70/00B33Y10/00C22C49/08C22C49/14C22C101/04
CPCC22C49/08C22C49/14B33Y10/00B33Y70/00B22F10/00B22F1/10B22F10/34B22F10/25Y02P10/25
Inventor 乔畅君吴韬金磊刘仁辰维克托卡门冯晓野张斐斐
Owner TSINGHUA INNOVATION CENT IN DONGGUAN
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