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Equipment and method for producing metal nanometer power by automatic control DC electric arc

A technology of metal nano-powder and DC arc, applied in the field of nano-material preparation, to achieve novel structure, improve quality, and overcome unstable factors in the production process and powder quality

Inactive Publication Date: 2005-01-05
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] DC arc plasma is an effective heat source for the preparation of nanoparticles, especially metal nanoparticles. At present, this method has initially achieved mass production, but there are still many technical problems for the realization of large-scale industrial production, mainly in the following aspects: How to overcome the current manual operation and realize the automation of the production process; in addition, how to realize the classification of nanoparticles with different particle sizes, so as to improve the quality of nano-powders, increase technical content and added value

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  • Equipment and method for producing metal nanometer power by automatic control DC electric arc
  • Equipment and method for producing metal nanometer power by automatic control DC electric arc
  • Equipment and method for producing metal nanometer power by automatic control DC electric arc

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Embodiment Construction

[0020] An automatic control direct current arc metal nano powder production equipment, which is composed of a powder generation chamber 1, a powder particle size classification chamber 2, a powder collection chamber 3, a powder processing chamber 4, a vacuum system 5, and a gas circulation pump connected in sequence 6. The hydraulic transmission system 9, the water cooling system 10, and the programming control system 11 are composed; the anode 8 and the cathode 7 are installed in the powder generation chamber 1, and are connected to the external hydraulic transmission and programming control system through the wall of the powder generation chamber 1; The particle size classification chamber 2 is composed of a double-walled water-cooled shell and a liquid nitrogen cooling tank; the hydraulic transmission system 9 is composed of a hydraulic tank and a transmission rod that control the 73-dimensional movement of the cathode and the 81-dimensional movement of the anode; the program...

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Abstract

A method for preparing metallic nanoparticles features that 3D movement of DC arc cathode and the 1D movement of anode are automatically controlled for continuous and stable prodution and the products are classified according their granularities in vacuum condition. Its apparatus is composed of generating chamber, classifying chamber, gathering chamber and processing chamber.

Description

technical field [0001] The invention belongs to the technical field of nanometer material preparation. It is a device for producing metal nano powder, especially a generation room for automatic and continuous production of metal nano powder, and a nano powder particle size grading room designed to improve the quality of powder. Background technique [0002] Nanopowder material refers to particle aggregates with a particle size of less than 100nm. It is a new type of high-tech material and has a wide range of uses in electronics, machinery, aerospace, military, chemical, metallurgy, medical and other fields, such as radar Wave-absorbing stealth materials, conductive coatings, high-performance magnetic recording materials, high-temperature wear-resistant materials, metal lubricant repair agents, low-temperature solders, industrial catalysts, superconducting film materials, etc. [0003] DC arc plasma is an effective heat source for the preparation of nanoparticles, especially...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/14
Inventor 董星龙孙维民王维李志杰
Owner DALIAN UNIV OF TECH
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