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Preparing method and application of high purity and density spherical titanium zirconium alloy powder

A technology of alloy powder and titanium zirconium is applied in the field of preparation of fine-grained, high-purity and dense spherical titanium-zirconium alloy powder for 3D printing. , The effect of high density and low oxygen content

Active Publication Date: 2017-11-21
云航时代(重庆)科技有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of high-purity dense spherical titanium-zirconium alloy powder, through the combination of smelting, hydrogenation-dehydrogenation and induction plasma spheroidization, aiming at solving the problem of powder in the traditional preparation process of titanium-zirconium alloy powder. Difficulties such as refinement, spheroidization and uncontrollable impurity content

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  • Preparing method and application of high purity and density spherical titanium zirconium alloy powder
  • Preparing method and application of high purity and density spherical titanium zirconium alloy powder
  • Preparing method and application of high purity and density spherical titanium zirconium alloy powder

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[0036] The embodiment of the present invention provides a preparation method of high-purity dense spherical titanium-zirconium alloy powder, comprising the following steps:

[0037] Step 1: Smelting after mixing titanium sponge particles and zirconium sponge particles to obtain high-purity titanium-zirconium alloy ingots;

[0038] Specifically, in the embodiment of the present invention, sponge titanium (Ti) and sponge zirconium (Zr) are selected as the basic raw materials, and the above raw materials are broken into small particles, and the titanium-zirconium mixture is prepared according to the required titanium-zirconium alloy composition, and mixed uniformly, The purity of the titanium sponge and zirconium sponge is not less than 99.9% by mass; in the embodiments of the present invention, the mass ratio of titanium sponge (Ti) to zirconium sponge (Zr) is preferably 1:1-9.

[0039]In the embodiment of the present invention, special smelting methods such as induction smeltin...

Embodiment 1

[0060] The preparation of high-purity dense spherical Ti-10%Zr alloy powder for 3D printing with an average particle size of 40 μm comprises the following steps:

[0061] In step 1, according to the composition of the Ti-10%Zr alloy, 1 part of zirconium sponge and 9 parts of titanium sponge are taken as basic raw materials. Crush the above raw materials into small particles with a particle diameter of about 3 mm and mix them uniformly.

[0062] Step 2, filling the titanium-zirconium mixture into the crucible of the vacuum induction water-cooled copper crucible suspension melting furnace; vacuumize the melting furnace, and the vacuum degree reaches 4×10 -3 Pa filled with high-purity argon to 50kPa to form a protective atmosphere; after the smelting started, first preheat the titanium-zirconium mixture with a power of 50kW to raise the temperature to 370°C; then increase the power to 160KW, and Melting for 8 minutes to completely melt and mix the titanium-zirconium mixture; aft...

Embodiment 2

[0071] The preparation of high-purity dense spherical Ti-30%Zr alloy powder for 3D printing with an average particle size of 30 μm comprises the following steps:

[0072] In step 1, according to the composition of the Ti-30%Zr alloy, 3 parts of zirconium sponge and 7 parts of titanium sponge are taken as basic raw materials. The above raw materials are broken into small particles with a particle diameter of about 2mm and mixed uniformly.

[0073] Step 2, filling the titanium-zirconium mixture into the crucible of the vacuum induction water-cooled copper crucible suspension melting furnace; vacuumize the melting furnace, and the vacuum degree reaches 5×10 -3Fill high-purity argon at Pa to 50kPa to form a protective atmosphere; after the melting starts, firstly preheat the titanium-zirconium mixture with a power of 50KW to raise the temperature to 380°C; then increase the power to 170KW, and use a constant power Melt for 7 minutes to completely melt the titanium-zirconium mixtu...

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Abstract

The invention relates to a preparing method and application of high purity and density spherical titanium zirconium alloy powder, and belongs to the technical field of alloy powder material preparation. The preparing method comprises the following steps that titanium sponge and zirconium sponge are used as raw materials, and titanium zirconium alloy ingots are prepared by using a vacuum induction melting technology; uniform vacuum annealing treatment is conducted on the titanium zirconium alloy ingots, and the ingots of uniform elements are obtained; the titanium zirconium alloy ingots are crushed into particles, hydrotreating is conducted, and hydrogen absorption titanium zirconium alloy powder is obtained; the hydrogen absorption titanium zirconium alloy powder is ball-milled under atmosphere protecting, and the hydrogen absorption titanium zirconium alloy powder of small particle sizes and irregular forms is obtained; the hydrogen absorption titanium zirconium alloy powder of irregular forms are sent to an inductive plasma torch, and the hydrogen absorption titanium zirconium alloy powder quickly absorbs heat, is dissolved and dehydrogenized; and in the dehydrogenizing process, the hydrogen absorption titanium zirconium alloy powder is split and shattered and then fused and nodulized under the high temperature, and finally, the high purity and density spherical titanium zirconium alloy powder is obtained by cooling. The titanium zirconium alloy powder prepared through the method has the advantages of being high in purity, small in particle size, good in uniformity, high in degree of sphericity and good in flowability.

Description

technical field [0001] The invention belongs to the technical field of preparation of alloy powder materials, and in particular relates to a preparation method of fine-grained high-purity dense spherical titanium-zirconium alloy powder for 3D printing. Background technique [0002] Titanium-zirconium alloy not only has low density, high specific strength, high temperature resistance, and corrosion resistance, but also has the characteristics of small neutron absorption cross section, anti-nuclear radiation, no biological toxicity, and good compatibility with human tissue. Therefore, it is used in aerospace, Nuclear industry and biomedical fields have a very wide range of applications. Titanium-zirconium alloy parts used in the above fields usually have small production scale, complex structure and high precision requirements. The production of titanium-zirconium alloy parts by traditional manufacturing technology has a long cycle, difficult process, low product precision an...

Claims

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Application Information

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IPC IPC(8): B22F9/02B22F1/00
CPCB22F9/023B22F1/065
Inventor 刘金涛陈连忠陈海群周法朱兴营马建平
Owner 云航时代(重庆)科技有限公司
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