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Preparation technology for tin-based shape memory alloy powder used for 3D printing

A memory alloy and 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of difficult metal powder preparation, rare research reports, and low product performance, so as to improve comprehensive functionality, reduce distribution range, and improve The effect of heat resistance

Inactive Publication Date: 2018-11-06
DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 3D printing technology is based on a computer model, through software layered discrete and numerical control molding system, using laser beams, hot-melt nozzles, etc. to accumulate and bond special materials such as metal powder layer by layer, and finally superimpose molding to manufacture physical products. The preparation of domestic metal powders for 3D printing is difficult, the output is small, and the product performance is low
However, the 3D printing metal powders currently on the market mainly include nickel-based superalloys, titanium-based alloys, stainless steel, cobalt-chromium alloys, etc., but there are few research reports on Babbitt alloy powders for 3D printing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Add Sb and Cu to the smelting furnace and melt completely at 1100°C, then add Sn and cool down to 850°C and continue stirring, then add graphene hydrochloric acid solution, heat up to 1000°C, after stirring evenly, add Pb, Zn and Cool Al to 900°C, stir at a high speed of 2000r / min to obtain a tin-based alloy liquid, wherein the components in the tin-based alloy liquid are Sb 10%, Cu 5.5%, Pb 9%, Zn 0.01% , Al 0.005%, graphene 0.1%, Sn balance.

[0026] (2) According to the mass ratio of the tin-based alloy liquid and the shape memory alloy particles as 1:0.01, add the tin-based alloy liquid into the shape memory alloy particles, first raise the temperature to 900°C, stir for 5 minutes, then raise the temperature to 1500°C, and stir for 10 minutes, Then lower the temperature to 1200° C., keep it warm for 15 minutes, and then raise the temperature to 1000° C. and keep it warm to obtain a tin-based shape memory alloy liquid.

[0027] (3) Under the atmosphere of protec...

Embodiment 2

[0030] (1) Add Sb and Cu to the melting furnace and completely melt at 1200°C, then add Sn and cool down to 950°C and continue stirring, then add graphene hydrochloric acid solution, heat up to 1200°C, after stirring evenly, add Pb, Zn and Cool Al to 950°C, stir at a high speed of 5000r / min to obtain a tin-based alloy liquid, wherein the components in the tin-based alloy liquid are Sb 12%, Cu 6.5%, Pb 11%, Zn 0.05% , Al 0.01%, graphene 2%, Sn balance.

[0031] (2) According to the mass ratio of the tin-based alloy liquid and the shape memory alloy particles as 1:0.1, add the tin-based alloy liquid to the shape memory alloy particles, first raise the temperature to 1000°C, stir for 10 minutes, then raise the temperature to 1600°C, and stir for 20 minutes, Then lower the temperature to 1350° C., keep it warm for 20 minutes, and then raise the temperature to 1050° C. and keep it warm to obtain a tin-based shape memory alloy liquid.

[0032] (3) Under the atmosphere of protective...

Embodiment 3

[0035] (1) Add Sb and Cu to the smelting furnace and completely melt at 1150°C, add Sn and cool down to 900°C and continue stirring, then add graphene hydrochloric acid solution, heat up to 1100°C, after stirring evenly, add Pb, Zn and The temperature of Al is lowered to 930° C., and the tin-based alloy liquid is obtained by stirring at a high speed of 3000 r / min. The contents of the components in the tin-based alloy liquid are respectively Sb 11%, Cu 6%, Pb 10%, Zn 0.04%, Al 0.008%, graphene 0.5%, Sn balance.

[0036] (2) According to the mass ratio of the tin-based alloy liquid and the shape memory alloy particles as 1:0.05, add the tin-based alloy liquid to the shape memory alloy particles, first raise the temperature to 950°C, stir for 8 minutes, then raise the temperature to 1550°C, and stir for 15 minutes, Then lower the temperature to 1250° C., keep it warm for 18 minutes, and then raise the temperature to 1030° C. and keep it warm to obtain a tin-based shape memory alloy...

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Abstract

The invention provides a preparation technology for tin-based shape memory alloy powder used for 3D printing. The preparation technology comprises the following steps that Sb and Cu are added into a smelting furnace to be completely melted, Sn is added to be continuously stirred, then a graphene hydrochloric acid solution is added, after temperature rise and even stirring are carried out, Pb, Zn and Al are added to be stirred at high speed, and tin-based alloy liquid is obtained; the tin-based alloy liquid is added into shape memory alloy particles, repeated fusion treatment is carried out, and the tin-based shape memory alloy liquid is obtained; under the atmosphere of protective gas, the tin-based shape memory alloy liquid downwards flows out through a flow guide nozzle, an ultrahigh pressure spraying nozzle atomizes and crushes metal liquid into a large quantity of wee liquid drops under the effects of high pressure air flow and supersonic waves, the liquid drops are cooled and solidified during rotary flying, and the tin-based shape memory alloy particles are obtained; and the tin-based shape memory alloy particles are screened and processed to obtain the tin-based shape memoryalloy powder used for 3D printing.

Description

technical field [0001] The invention belongs to the technical field of tin-based alloy powder materials, and in particular relates to a preparation process of tin-based shape memory alloy powder for 3D printing. Background technique [0002] 3D printing technology is based on a computer model, through software layered discrete and numerical control molding system, using laser beams, hot-melt nozzles, etc. to accumulate and bond special materials such as metal powder layer by layer, and finally superimpose molding to manufacture physical products. The preparation of domestic metal powders for 3D printing is difficult, the output is small, and the product performance is low. The preparation methods of metal powder are divided into reduction method, electrolysis method, carbonyl decomposition method, grinding method and atomization method, etc. Among them, the atomization method refers to the pulverization of molten metal into Particles with a size smaller than about 150 μm. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08B33Y70/00C22C1/06
CPCB22F9/082B22F2009/0824B22F2009/0848B33Y70/00C22C1/06
Inventor 董永梅
Owner DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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