A kind of preparation method and application of high-purity dense 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. Solve the problem of pure smelting and the effect of small particle size

Active Publication Date: 2020-06-09
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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  • A kind of preparation method and application of high-purity dense spherical titanium-zirconium alloy powder
  • A kind of preparation method and application of high-purity dense spherical titanium-zirconium alloy powder
  • A kind of preparation method and application of high-purity dense 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 preparation method and application of high-purity dense spherical titanium-zirconium alloy powder, belonging to the technical field of alloy powder material preparation. The invention uses sponge titanium and sponge zirconium as raw materials and adopts vacuum induction melting technology to prepare titanium-zirconium alloy ingots. Homogenizing vacuum annealing treatment is performed on it to obtain an ingot with uniform composition. The titanium-zirconium alloy ingot is broken into particles and then hydrogenated to obtain hydrogen-absorbing titanium-zirconium alloy powder. The hydrogen-absorbing titanium-zirconium alloy powder is ball-milled under a protective atmosphere to obtain irregular hydrogen-absorbing titanium-zirconium alloy powder with fine grain size. Send the irregular hydrogen-absorbing titanium-zirconium alloy powder into the induction plasma torch, the hydrogen-absorbing titanium-zirconium alloy powder rapidly absorbs heat and decomposes for dehydrogenation, and cracks and explodes during the dehydrogenation process, and then melts and spheroidizes at high temperature , and finally cooled to obtain high-purity dense spherical titanium-zirconium alloy powder. The titanium-zirconium alloy powder prepared by the method has the advantages of high purity, small particle size, good uniformity, high sphericity and good fluidity.

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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Patent Type & Authority Patents(China)
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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