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Formula of 3D printing titanium alloy powder and preparation method

A 3D printing, titanium alloy technology, applied in the field of 3D printing, can solve the problems of slow development of metal powder materials, titanium alloy metal materials, etc., and achieve the effects of good fluidity, easy operation and high looseness.

Inactive Publication Date: 2018-09-28
宝鸡钛程压力容器设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the development of non-metallic powder materials used in 3D printing has been rapid, but the development of metal powder materials, especially titanium alloy metal materials, has been slow. Therefore, the development of a special 3D printing titanium alloy metal material for aircraft manufacturing has good social and economic benefits. benefit

Method used

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Examples

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Effect test

preparation example Construction

[0021] A preparation method of 3D printing titanium alloy powder, its preparation method is as follows:

[0022] Step 1: The weight ratio is 15-25% AL, 2-8% Cr, 5-15% Nb, 5-10% M O , 0.1%R U , the raw material whose balance is Ti is mechanically stirred and mixed evenly, then heated to a molten state, and then fully stirred;

[0023] Step 2: The metal liquid in step 1 flows downward through the heat preservation crucible and the diversion nozzle, and the metal liquid is atomized and broken into a large number of fine droplets by the high-pressure argon gas flow through the nozzle under vacuum conditions;

[0024] Step 3: cooling the liquid droplets in step 2 to form fine powder;

[0025] Step 4: Sieve the powder in step 3, and the spherical powder in 11.2-63.6um is qualified.

[0026] Further, the stirring in the step 1 is a high-speed mixer.

[0027] Further, the insulating crucible in the step 2 adopts a KGPS type thyristor intermediate frequency power supply, and the KG...

Embodiment 1

[0031] Embodiment one: a kind of preparation method of 3D printing titanium alloy powder, its preparation method is as follows:

[0032] Step 1, the weight ratio is 25% AL, 5% Cr, 10% Nb, 10% M O , 0.1%R U , the raw material whose balance is Ti is mechanically stirred and mixed evenly, then heated to a molten state, and then fully stirred;

[0033] Step 2: The metal liquid in step 1 flows downward through the heat preservation crucible and the diversion nozzle, and the metal liquid is atomized and broken into a large number of fine droplets by the high-pressure argon gas flow through the nozzle under vacuum conditions;

[0034] Step 3: cooling the liquid droplets in step 2 to form fine powder;

[0035] Step 4: Sieve the powder in step 3, and the spherical powder of 11.2-63.6um is qualified.

[0036] The titanium alloy powder prepared in Example 1 can reach the spherical powder of 400 mesh, 11.2-63.6um with high looseness and good fluidity, which meets the requirements of 3D...

Embodiment 2

[0037] Embodiment two: a kind of preparation method of 3D printing titanium alloy powder, its preparation method is as follows:

[0038] Step 1, the weight ratio is 20% AL, 4% Cr, 8% Nb, 8% M O , 0.1%R U , the raw material whose balance is Ti is mechanically stirred and mixed evenly, then heated to a molten state, and then fully stirred;

[0039] Step 2: The metal liquid in step 1 flows downward through the heat preservation crucible and the diversion nozzle, and the metal liquid is atomized and broken into a large number of fine droplets by the high-pressure argon gas flow through the nozzle under vacuum conditions;

[0040] Step 3: cooling the liquid droplets in step 2 to form fine powder;

[0041] Step 4: Sieve the powder in step 3, and the spherical powder of 11.2-63.6um is qualified.

[0042] The titanium alloy powder prepared in Example 2 can reach 400 mesh, 11.2-63.6um high looseness and good fluidity spherical powder, which meets the requirements of 3D printing.

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Abstract

The invention discloses a formula of 3D printing titanium alloy powder and a preparation method. The formula comprises the following components: 15-25% of AL, 2-8% of Cr, 5-15% of Nb, 5-10% of Mo, 0.1% of RU, and the balance Ti; 400-mesh 11.2-63.6 microns spherical powder with high apparent density and high mobility is prepared. The preparation method comprises the steps of 1, heating raw materials through a vacuum intermediate-frequency induction furnace until the raw materials are molten; and then fully stirring the raw materials; 2, downwards draining molten metal obtained in step 1 througha heat insulation crucible and a flow guide port; and forming a large number of fine vaporific droplets under the vacuum condition of 1*10<-3>MPa; 3, cooling the droplets obtained in step 2 in a vacuum furnace to form fine powder; and 4, mechanically vibrating and screening the powder obtained in step 3. With the adoption of the method, the 400-mesh 11.2-63.6 microns spherical powder with high apparent density and high mobility is prepared; and the powder meets the requirement of 3D printing a high-temperature titanium alloy part of an airplane.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a formula and a preparation method of 3D printing titanium alloy powder. Background technique [0002] 3D printing metal powder is the most important link in the 3D printing industry chain of metal parts, and it is also the greatest value. At the "2013 World 3D Printing Technology Industry Conference", authoritative experts in the world's 3D printing industry gave a clear definition of 3D printing metal powder, which refers to the group of metal particles whose size is less than 1mm. Including single metal powder, alloy powder and certain refractory compound powder with metallic properties". [0003] At present, 3D printing metal powder materials include cobalt-chromium alloy, stainless steel, industrial steel, bronze alloy and nickel-aluminum alloy, etc. However, in addition to good plasticity, 3D printing metal powder must also meet the requirements of fine po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00B22F9/08B22F1/00B33Y70/00
CPCB22F1/0003B22F9/082B33Y70/00C22C14/00
Inventor 何宝明郭宏勤
Owner 宝鸡钛程压力容器设备制造有限公司
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