Ti-based powder preparing device and Ti-based powder preparing method

A powder, titanium-based technology, applied in the field of vacuum magnetic levitation to prepare high-purity titanium-based powder, can solve the problems of low purity, pollution, high cost, etc., and achieve the effect of low oxygen content, high purity, and pollution solving

Inactive Publication Date: 2013-11-06
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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Problems solved by technology

[0010] In order to overcome the deficiencies of the above-mentioned prior art, the present invention proposes an integrated technology of vacuum magnetic levitation smelting and pulverization, which integrates raw material vacuum magnetic levitation smelting and atomization pulverization, and combines the two metallurgical processes into one continuous metallurgical process , which saves metallurgical processes such as raw material smelting and solidification, can solve the pr

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  • Ti-based powder preparing device and Ti-based powder preparing method

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Embodiment 1

[0039] Example 1, Ti6Al4V powder with an average particle size of 20 μm, a purity of 4N, a spheroidization rate of 90%, an oxygen content of less than 2000 ppm, and a nitrogen content of less than 500 ppm. The main parameters of the preparation process are: the purity of the Ti6Al4V furnace charge is 2N -3N, system vacuum 6×10 -4 MPa, the oxygen content of the system is less than 1ppm, the power supply is 200Kw, the supersonic high-pressure argon pressure is 5.23MPa, the vibration frequency is 85HKz, and the argon pressure of the two-stage cooling device is 0.6MPa.

Embodiment 2

[0040] Example 2, the average particle size is 20 μm, the purity is 4N, the spheroidization rate is 90%, the oxygen content is lower than 1800ppm, and the pure powder with nitrogen content is lower than 300ppm. The main parameters of the preparation process are: the purity of the pure titanium charge is at 2N-3N, system vacuum 6×10 -5 MPa, the oxygen content of the system is less than 1ppm, the power supply is 200Kw, the supersonic high-pressure argon pressure is 5.23MPa, the vibration frequency is 85HKz, and the argon pressure of the two-stage cooling device is 0.6MPa.

[0041] The titanium-based powder material is prepared by a vacuum magnetic levitation smelting powder-making device, which improves the purity of the titanium-based powder material, reduces the oxygen content and nitrogen content of the material, and has a high powder spheroidization rate and good sphericity. It can be well used in the traditional powder metallurgy industry and the emerging laser 3D printing ...

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Abstract

The invention discloses a Ti-based powder preparing device and a Ti-based powder preparing method. The device comprises a vacuum chamber, a magnetic suspension melting furnace, an atomization power processing chamber and a screening system. During working, when the magnetic suspension melting furnace is energized with high frequency alternating current, a high frequency alternating magnetic field can be produced in space around a coil, and the high frequency alternating magnetic field causes induction vortex in furnace charge. The induction vortex and the external alternating magnetic field interact with each other to produce suspension force for the furnace charge, and the suspension force is balanced with the dead weight of the furnace charge so as to enable the furnace charge to suspend; meanwhile, a vortex circuit generates a great deal of heat to melt the furnace charge, and the molten mass is subjected to deslagging, degassing and purification under the fierce function of electromagnetic stirring. The purified molten mass can fall into a gas atomization chamber by virtue of controlling the magnetic field; under the functions of a supersonic speed high-pressure argon atomizer and a cooling device, the molten mass is atomized into spherical Ti-based powder with high degree of sphericity, oxygen content of less than 1800 ppm and nitrogen content of less than 300 ppm.

Description

technical field [0001] The invention relates to the technical field of powder preparation, in particular to a technology for preparing high-purity titanium-based powder by vacuum magnetic levitation. Background technique [0002] As we all know, metal materials, especially strategic high-melting point alloy materials, have become the development direction of high-value-added and high-precision dual-use high-tech products for military and civilian use, while powder metallurgy technology and emerging laser 3D printing technology are manufacturing It is an effective method to endow high-tech products. Especially for laser 3D printing technology, this method can be used to obtain components with no segregation, stable performance, and uniform structure; from an economic point of view, this method is a process with less or no chips. Compared with the traditional forging processing technology, the prepared parts are basically near net shape, and the material utilization rate can ...

Claims

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Application Information

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IPC IPC(8): B22F9/08
Inventor 林锦新卢衍锦黄婷婷吴松全甘艺良崔红生
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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