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Short-flow preparation method of micro-sized spherical titanium powder

A technology of spherical titanium powder and short process, which is applied in metal processing equipment, transportation and packaging, etc., to achieve the effect of reducing production cost, large volume and low oxygen content

Active Publication Date: 2011-02-16
江苏金物新材料有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of spheroidization of fine titanium powder and oxidation in the process of spheroidization, and to provide a method for preparing fine spherical titanium powder used in injection molding and gel injection molding techniques in powder metallurgy. , the method saves energy, reduces pollution, improves production efficiency, and reduces production costs

Method used

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Examples

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example 1

[0033] A fine spherical titanium powder with an average particle diameter of 15 μm was prepared.

[0034] Titanium hydride (TiH) with an average particle size of 100 μm 2 ) powder as the raw material, the stable operating radio frequency (RF) plasma power is 50KW, the flow rate of argon working gas is 30 slpm, the flow rate of argon protective gas is 150 slpm, and the system negative pressure is 200 mm Hg. The titanium hydride powder is sent into the high-temperature plasma with the argon gas flow rate of 4 slpm, and the powder delivery rate is 40g / min. After the spheroidization treatment, the fine spherical titanium powder with an average particle size of 15 μm can be obtained by cyclone separation.

example 2

[0036] A fine spherical titanium powder with an average particle diameter of 20 μm was prepared.

[0037] Titanium hydride (TiH) with an average particle size of 150 μm 2 ) powder as the raw material, the stable operating radio frequency (RF) plasma power is 60KW, the flow rate of argon working gas is 40 slpm, the flow rate of argon protective gas is 200 slpm, and the system negative pressure is 230 mm Hg. The titanium hydride powder is sent into the high-temperature plasma with the argon gas with a flow rate of 4.5 slpm, and the powder delivery rate is 50g / min. After the spheroidization treatment, the fine spherical titanium powder with an average particle size of 20 μm can be obtained by cyclone separation.

Embodiment 3

[0039] A fine spherical titanium powder with an average particle diameter of 10 μm was prepared.

[0040] Titanium hydride (TiH) with an average particle size of 50 μm 2) powder as the raw material, the stable radio frequency (RF) plasma power is 45KW, the flow rate of argon working gas is 30 slpm, the flow rate of argon protective gas is 200 slpm, and the system negative pressure is 200 mm Hg. The titanium hydride powder is sent into the high-temperature plasma with the argon gas flow rate of 4 slpm, and the powder delivery rate is 30g / min. After the spheroidization treatment, the fine spherical titanium powder with an average particle size of 10 μm can be obtained by cyclone separation.

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Abstract

The invention provides a short-flow preparation method of micro-sized spherical titanium powder, which belongs to the technical field of powder preparation. The hydrogenation-dehydrogenation technique and the radio frequency plasma body fusion spheroidization technique are integrated, and the titanium hydride powder is selected as raw material; the titanium hydride powder absorbs heat in the high-temperature plasma and quickly decomposes and dehydrogenates, and the titanium hydride power is cracked and crushed in the process of dehydrogenation to produce the micro-sized titanium powder. By using the method, the processes of the dehydrogenation and the spheroidization of the generated titanium powder are finished in one step directly through the plasma processing, and the short-flow preparation of the micro-sized spherical titanium powder is realized. The invention has the advantages that the hydrogenation-dehydrogenation technique and the radio frequency plasma fusion spheroidization technique are combined, so as to shorten the production flow, enhance the production efficiency and reduce the production cost. Simultaneously, the prepared spherical titanium power has fine and even particles, good liquidity, high sphericity and low oxygen content, thereby the requirements of technical industrial production such as the injection figuration, the gel die casting figuration, and thelike are satisfied.

Description

technical field [0001] The invention belongs to the technical field of powder preparation, and in particular provides a short-flow preparation method of fine spherical titanium powder. technical background [0002] Titanium and titanium alloys have excellent properties such as low density, high specific strength, good corrosion resistance, high heat resistance, non-magnetic, good welding performance, etc., and can be widely used in aerospace, automobiles, bioengineering, watches, sporting goods, environmental protection and other fields. But at present, in the preparation of complex shape, uniform structure, high-performance titanium and titanium alloy near-net shape products, the most widely used powder injection molding and gel injection molding have higher requirements on the powder in the process, which requires titanium powder The particle size is fine and uniform, the shape is regular, the fluidity is good, and the oxygen content is low, but ordinary titanium powder i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/30
CPCB22F9/023B22F2999/00B22F1/142B22F2202/11B22F1/065
Inventor 郭志猛盛艳伟曲选辉郝俊杰邵慧萍罗骥林涛王述超
Owner 江苏金物新材料有限公司
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