Rapid forming device and forming process for tungsten electrode filament under vacuum state

Abstract

The invention discloses a rapid forming device and forming process for a tungsten electrode filament under the vacuum state. The forming device comprises a vacuum chamber. The vacuum chamber communicates with a vacuumizing system, an electric heating system and a nitrogen injection system. A female die forming die, a male forming die and a vertical forming die which are used for pressing tungstenelectrode filaments are arranged in the vacuum chamber. The forming process comprises the steps of closing of the female die forming die and the male die forming die and the like. The rapid forming device is simple in structure and convenient to use, one-time rapid forming of the tungsten electrode filaments is achieved on the premise of not destroying the tungsten characteristics, and the manufacturing requirement of the tungsten electrode filaments in the NBI ion source arc chamber can be effectively met.

Description

technical field

[0001] The invention relates to the technical field of manufacturing nuclear fusion devices, in particular to a tungsten filament rapid prototyping device in a vacuum state and a prototyping process thereof. Background technique

[0002] Such as figure 1 As shown, the NBI ion source arc chamber a in the EAST superconducting tokamak device is equipped with multiple tungsten filaments b, and its shape needs to be consistent with the resistance in the chamber body. The resistivity of tungsten is 5.3*10-8Ω·m, with high melting point, high resistivity, good strength and low vapor pressure. It is the best material for making filaments among all pure metals. It is processed into the tungsten filament shape required by the NBI ion source arc chamber. Contents of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a tungsten filament rapid prototyping device and its forming proce...

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