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A rare earth magnesium alloy material for 3D printing and its preparation method

An alloy material and 3D printing technology, applied in the field of 3D printing materials, can solve the problems of easy increase of impurities and high energy consumption, and achieve the effects of excellent flame retardancy, low oxygen content, and fine grains

Active Publication Date: 2017-03-15
SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the ball milling method is easy to increase impurities due to high energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Raw materials: according to the mass ratio of elements, Mg:Mn:Y=85:10:5 weighs 4337g of magnesium alloy MB1 (the average content of Mn: 1.9%, Mg is the balance), 413g of pure manganese, 250g A total of 5Kg of pure rare earth element Y;

[0030] (2) Preheat the crucible to 400°C in a resistance furnace, pour the pure manganese and magnesium alloy MB1 weighed in the step (1) into the crucible, and sprinkle the total amount of raw materials described in the step (1) into the crucible at the same time. Covering agent RJ-2 (Xuzhou Feixiang Aluminum Co., Ltd.) with 1% by weight is smelted at 500°C under atmospheric conditions. After the pure manganese and magnesium alloy MB1 are completely melted, pure rare earth element Y is added, and the pure rare earth element Y is added after the pure rare earth After element Y is completely melted, stir the melt until uniform, continue to heat up to 700°C, add 2% refining agent FX-MJ (Feixiang Aluminum Co., Ltd.) by weight in the ra...

Embodiment 2

[0036] (1) Raw material: According to the mass ratio of elements, Mg:Mn:Nd=90:7:3, weigh 4592g magnesium alloy MB1, 258g pure manganese, 150g pure Nd, a total of 5Kg;

[0037] (2) Preheat the crucible to 450°C in a resistance furnace, pour the pure manganese and magnesium alloy MB1 weighed in the step (1) into the crucible, and sprinkle the total amount of raw materials described in the step (1) into the crucible at the same time. 1.5% by weight of covering agent RJ-2 (Feixiang Aluminum Industry Co., Ltd.), smelting at 550 ° C under atmospheric conditions, after the pure manganese and magnesium alloy MB1 are completely melted, add pure rare earth element Nd, and wait until the pure rare earth element is completely After melting, stir the melt until uniform, continue to heat up to 730°C, add 2.5% refining agent FX-MJ (Feixiang Aluminum Co., Ltd.) by weight in the raw materials described in step (1), refine for 10 minutes, and finally keep the temperature at 730 ℃, let it stand ...

Embodiment 3

[0043] (1) Raw materials: According to the mass ratio of elements, Mg:Mn:Ce=97:2:1, weigh 4949g magnesium alloy MB8 (Mn:1.75%, Ce:0.25%, Mg: balance), 13.4g pure manganese and 37.6g pure Ce total 5Kg;

[0044](2) Preheat the crucible to 450°C in a resistance furnace, pour the pure manganese and magnesium alloy MB8 weighed in step (1) into the crucible, and sprinkle the total amount of raw materials described in step (1) into the crucible at the same time. 2% by weight of covering agent RJ-2, smelting at 550°C under atmospheric conditions, after the pure manganese and magnesium alloy MB8 are completely melted, add pure rare earth element Ce, and after the pure rare earth element Ce is completely dissolved, stir the melt Until uniform, continue to heat up to 750°C, add 3% refining agent FX-MJ (Feixiang Aluminum Industry Co., Ltd.) by weight in the raw materials described in step (1), refine for 10 minutes, and finally keep the temperature at 750°C and let it stand for 15 minutes...

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Abstract

The invention belongs to the technical field of 3D printing materials and discloses a rare earth magnesium-alloy material for 3D printing and a preparation method of the same. The preparation method particularly comprises following steps: (1) weighing raw materials according to element mass ratio of Mg:Mn:Re being 85-97:2-10:1-5; (2) adding pure magnesium, pure manganese and magnesium alloy into a pre-heated crucible, adding a cover agent and smelting the mixture under atmospheric conditions; (3) after the mixture smelted completely, adding an Mg-Re intermediate alloy and pure rare earth elements, melting the components with stirring uniformly and increasing the temperature to 700-750 DEG C; (4) adding a refining agent for refining the alloy for 2-25 min, allowing the refined alloy to stand, removing floated slag, adding the refined alloy into a sand mould trough to obtain a rare earth magnesium alloy base metal; and (5) smelting and atomizing the base metal to obtain the rare earth magnesium-alloy material. The rare earth magnesium-alloy material is excellent in flame retarding performance, is easy to control in powder shape and particle size, can be smelted without protective gas so that a problem of flammability during preparation of the magnesium alloy powder through an atomization method is solved, and can be used for laser 3D printing.

Description

technical field [0001] The invention belongs to the technical field of 3D printing materials, and in particular relates to a rare earth magnesium alloy material for 3D printing and a preparation method thereof. Background technique [0002] 3D printing is a kind of rapid prototyping technology. It uses bondable materials such as powdered metal or plastic, and finally prints out products directly through layer after layer of multi-layer printing, forming "digital manufacturing". The earliest 3D printing technology began in the United States in the 1980s, but due to the extremely expensive materials and machines, 3D printers have not been widely used commercially. Initially, 3D printing was often only used in mold manufacturing, industrial design and other fields, and then gradually used in aerospace, automotive and medical fields. [0003] Due to its light weight, high strength, pressure resistance, good heat dissipation, and easy casting and molding, magnesium alloy is grad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/00C22C23/06C22C1/03B22F9/08B33Y70/00
Inventor 李艳辉郑华德张明朱祎纬
Owner SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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