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Method for preparing titanium alloy Ti60 prills by adopting plasma auxiliary rotary electrode

A technology of auxiliary rotation and metal balls, which is applied in the field of metal material preparation, can solve the problems that cannot meet the needs of laser three-dimensional forming technology, and achieve the effect of smooth and clean powder particle surface, low ratio of deformed particles, and compact equipment structure

Inactive Publication Date: 2010-07-07
张建利
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Problems solved by technology

[0004] The present invention is aimed at the titanium alloy Ti60 metal pellets prepared by the existing foreign atomization method, which cannot meet the needs of the laser three-dimensional forming process. Titanium alloy Ti60 metal balls can meet the needs of the National Institute of Aerospace Special Materials and Technology, the State Key Laboratory of Solidification Technology, and the laser three-dimensional forming process for special parts required in the fields of aviation and aerospace. Titanium alloy Ti60 metal ball material with good monodispersity

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  • Method for preparing titanium alloy Ti60 prills by adopting plasma auxiliary rotary electrode
  • Method for preparing titanium alloy Ti60 prills by adopting plasma auxiliary rotary electrode

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Embodiment Construction

[0018] The method for preparing titanium alloy Ti60 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 Ti60 metal is refined into a standard rod, and then it is refined into a plasma gun rotating electrode that can run at a high speed of 12000-14000 revolutions per second to prepare spherical powder. The motor rod running smoothly in the dynamic seal of the equipment; the preparation process of the electrode rod is: a. Proportioning titanium alloy Ti60 metal according to the chemical composition required by the actual material to obtain the melting and casting raw material; b. Vacuum melting the qualified melting and casting raw material , to obtain an ingot-shaped blank with a relative density of more than 85%; c, the vacuum-smelted ingot-shaped blank is hot-forged to obtain a titanium alloy Ti60 metal rod with a relative density greater than 98%; d, fo...

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Abstract

The invention relates to a method for preparing titanium alloy Ti60 metal spherical powder by adopting a plasma auxiliary rotary electrode centrifuging process. The method comprises the following steps of: generating a glow discharge plasma arc between a plasma auxiliary electrode and a consumption-type electrode made of rotary cylindrical titanium alloy Ti60 metal in a closed container protected by inert gas; forming droplets at one section of the titanium alloy Ti60 metal electrode close to the plasma arc by high temperature which is generated by the plasma arc; flinging the droplets out by centrifugal force; cooling the titanium alloy Ti60 metal droplets in air and solidifying into spheres in the inert atmosphere environment of the closed container; and collecting the titanium alloy Ti60 prills. Process parameters are changed in the method so that titanium alloy Ti60 prills with an average sphere diameter from 0.02 mm to 1.5 mm and better monodispersity are obtained. The titanium alloy Ti60 prills have favorable degree of sphericity, lower malformed particle proportion and controllable sphere diameters and can be used in the field of laser three-dimensional forming processes for preparing special parts of aerospace crafts.

Description

technical field [0001] The invention relates to the technical field of metal material preparation, in particular to a method for preparing titanium alloy Ti60 metal pellets by using a plasma-assisted rotating electrode centrifugal process, and the prepared titanium alloy Ti60 metal pellets can be used for laser three-dimensional forming and plasma coating process . Structural materials used in the aerospace field. Background technique [0002] The National Aerospace Special Materials and Technology Research Institute, the State Key Laboratory of Solidification Technology, and the laser three-dimensional molding process designed for special parts required in the fields of aviation and aerospace require a titanium with a small diameter, good sphericity, and good monodispersity. Alloy Ti60 metal pellets as a functional special material. [0003] It is understood that there is no production of this kind of product in China at present, and there is a gas atomization process in ...

Claims

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Application Information

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IPC IPC(8): B22F9/10
Inventor 张建利
Owner 张建利
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