Method for preparing titanium alloy TA15 metal balls by employing plasma auxiliary rotating electrode

A technology of auxiliary rotation and metal balls, which is applied in the field of metal material preparation, can solve the problems of small ball diameters and titanium alloy TA15 metal balls that cannot meet the needs of laser three-dimensional forming and electron beam forming processes, and achieve small ball diameters and high Good mechanical properties and sphericity

Inactive Publication Date: 2010-06-16
张建利
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Problems solved by technology

[0004] In view of the fact that the titanium alloy TA15 metal balls prepared by the existing atomization method cannot meet the needs of laser stereoforming and electron beam forming processes, the purpose of the present invention is to provide a method for preparing titanium alloy TA15 metal balls by using a plasma rotating electrode. The obtained titanium al...

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  • Method for preparing titanium alloy TA15 metal balls by employing plasma auxiliary rotating electrode

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Embodiment Construction

[0018] The method for preparing titanium alloy TA15 metal pellets by using a plasma-assisted rotating electrode is implemented according to the following steps:

[0019] (1) Preparation of anode electrode rod: the titanium alloy TA15 metal is refined into a standard rod, and then it is refined into a plasma gun rotating electrode that can operate at a high speed of 9000-15000 revolutions per second to prepare spherical powder. The motor rod running smoothly in the dynamic seal; the preparation process of the electrode rod is as follows: a. According to the national standard, the chemical composition ratio of titanium alloy TA15 is obtained to obtain the melting and casting raw material; b. The qualified melting and casting raw material is vacuum smelted to obtain a relative An ingot-shaped blank with a density of more than 75%; c. The vacuum-melted ingot-shaped blank is hot-forged to obtain a titanium alloy TA15 metal rod with a relative density greater than 97%; d. The titaniu...

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Abstract

The invention relates to a method for preparing titanium alloy TA15 metal balls by employing a plasma auxiliary rotating electrode centrifugal process. In a sealed container protected by inert gas, a glow discharge plasma arc is generated between a plasma auxiliary electrode and a consuming electrode made of a rotating cylinder titanium alloy TA15. The high temperature caused by the plasma arc forms droplets on a section of the titanium alloy TA15 electrode, close to the plasma arc, and the droplets are thrown out by centrifugal force. The droplets of the titanium alloy TA15 is air cooled and solidified into a ball shape in the inert gas environment of the sealed container, thus, the titanium alloy TA15 metal balls are obtained. The method can obtain titanium alloy TA15 metal balls with the average sphere diameter between 0.1mm and 1.5 mm and good monodispersity by changing process parameters. The prepared powder metal balls have the advantages of good sphericity, lower proportion of abnormal granule and controllable ball diameter and can be used in the field of laser solid forming to prepare special components of aviation spacecraft.

Description

technical field [0001] The invention relates to the technical field of metal material preparation, in particular to a method for preparing titanium alloy TA15 metal pellets by using a plasma-assisted rotating electrode centrifugal process. The prepared titanium alloy TA15 metal pellets can be used for electron beam forming and laser three-dimensional forming. Plasma coating process. Structural materials used in the aerospace field. Background technique [0002] State Key Laboratory of Solidification Technology, State Key Laboratory of Porous Materials, laser three-dimensional forming and electron beam forming processes designed for special parts required in the fields of aviation and spacecraft require a small diameter, good sphericity, and good monodispersity Titanium alloy TA15 metal pellets are used as a consumable special material. [0003] It is understood that there are currently water atomization and gas atomization processes in China to prepare similar spherical ma...

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Application Information

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IPC IPC(8): B22F9/14
Inventor 张建利
Owner 张建利
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