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Globular titanium micro-powder or ultra-micro powder preparation device and method

A technology of titanium micropowder and ultrafine powder, which is applied in the field of powder material preparation equipment and processing, can solve the problems of low productivity, regular electrode replacement, electrode burning, etc., to improve sphericity and purity, ensure sealing performance, and reduce usage. Effect

Active Publication Date: 2009-03-25
SOUTHWESTERN INST OF PHYSICS
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Problems solved by technology

However, the main defects of these DC arc plasma methods are that the electrodes are burned out, impurities are introduced, and the electrodes must be replaced regularly, which affects the continuous and stable operation of the equipment system.
[0006] The current method of preparing fine spherical titanium metal powder has low productivity and high cost

Method used

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  • Globular titanium micro-powder or ultra-micro powder preparation device and method
  • Globular titanium micro-powder or ultra-micro powder preparation device and method
  • Globular titanium micro-powder or ultra-micro powder preparation device and method

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Embodiment Construction

[0022] Process titanium powder with a plasma device according to the present invention, utilize the high-energy characteristic of radio frequency (RF) plasma, inject the plasma torch with carrying gas (argon gas) with carrying gas (argon gas) into the plasma torch, irregular titanium The raw powder particles are rapidly heated and melted, and the molten particles form highly spherical droplets under the action of surface tension, and rapidly solidify under a very high temperature gradient to form titanium powder with good sphericity.

[0023] The device of the invention mainly includes a high-frequency plasma power supply, a plasma generator and a reactor, a feeder, a heat exchange chamber, a gas-solid separation chamber, a powder material collection chamber and a feeding gun. These devices form an industrialized production system with stable operation, continuous operation and high production capacity.

[0024] The invention adopts high-temperature spheroidization and rapid c...

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Abstract

The invention belongs to a process for preparing and processing powder material by taking plasma as a heat source, in particular to a process and an apparatus of metal titanium powder material for powder metallurgy, plasma spray, injection forming, gel injection molding and the like. The invention has the advantages that: the adoption of the high temperature spheroidization and rapid condensation special spheroidization technique can improve the sphericity and purity of titanium powder, and both a reactor and the titanium powder spheroidization process are cooled with circulating water, thereby ensuring the sealing performance of equipment, also reducing the use of inert gases, effectively reducing costs, improving the production efficiency and guaranteeing the purity of spherical titanium powder.

Description

technical field [0001] The invention belongs to a powder material preparation device and a processing method, in particular to a powder material preparation device and method using plasma as a heat source. Background technique [0002] Plasma has the characteristics of high temperature, high enthalpy, high activity and large temperature gradient. Using plasma as a heat source has great technical advantages in the spheroidization of micron, submicron and certain nanometer powder materials. RF plasma technology and equipment are more widely used in the field of powder material technology than microwave and DC arc plasma heat sources because they do not bring in any impurities, continue to operate stably, have high material processing speed, high production capacity and moderate equipment cost. It has higher application value in the field of preparation and processing of high-performance structural materials or functional materials. [0003] Titanium and its alloys are importa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
Inventor 叶高英古忠涛刘川东郭志猛郝俊杰
Owner SOUTHWESTERN INST OF PHYSICS
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