Methods for preparing titanium alloy TC4 prill by plasma auxiliary rotation electrode

Abstract

The invention relates to a method for preparing a titanium alloy TC4 spherical powder by a plasma auxiliary rotation-electrode centrifugal process, comprising the following steps of: generating a glow discharge plasma arc between consumption type electrodes manufactured by a plasma auxiliary electrode and a rotational cylindrical titanium alloy TC4 in a closed container protected by inert gas, wherein a section of the titanium alloy TC4 electrode, which is close to the plasma arc, forms droplets due to high temperature generated by the plasma arc; throwing the droplets by centrifugal force; air-cooling and curing the titanium alloy TC4 droplets into a spherical shape in the inert atmosphere environment of the closed container; and obtaining a titanium alloy TC4 prill. The method can obtain the titanium alloy TC4 prill which has average sphere diameters between 0.08 mm and 1.8 mm and better monodispersity by changing technological parameters; in addition, the prepared powder prill has good sphericity, lower malformed particle proportion and controllable sphere diameter and can be used in the field of laser three-dimensional forming and for preparing special components of aerospace planes.

Description

technical field [0001] The invention relates to the technical field of metal material preparation, in particular to a method for preparing titanium alloy TC4 metal pellets by using a plasma-assisted rotating electrode centrifugal process. The prepared titanium alloy TC4 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 TC4 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 mater...

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the titanium alloy TC4 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 TC4 metal balls by using a plasma rotating electrode. The obtained titanium alloy TC4 metal balls can meet the needs of the State Key Laboratory of Solidification Technology, the State Key Laboratory of Porous Materials, laser stereoforming and electron beam forming processes required for special parts in the fields of aviation and aerospace. Titanium alloy TC4 metal ball material with small size, good sphericity and good monodispersity

Images