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

A technology of vacuum state and forming device, applied in the field of tungsten electrode filament rapid forming device and its forming process under vacuum state, can solve the problems of high melting point, low vapor pressure, high resistivity, etc., and achieves convenient use, high efficiency and simple structure Effect

Active Publication Date: 2020-04-10
合肥聚能电物理高技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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. Processed into the tungsten filament shape required by NBI ion source arc chamber

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] As a further optimization description of the above implementation:

[0026] Die pusher 9 and vertical forming die pusher 12 both include a guide rod 13 affixed to the top surface of the die forming die 8 and the vertical forming die 11, and the outside of the guide rod 13 is sleeved with a bellows 14 along the axial direction. The pipe 14 is arranged in the positioning bracket 15, the top of the positioning bracket 15 is provided with a positioning nut 16 that can be adjusted along the height direction of the positioning bracket 15, the top of the guide rod 13 stretches out the positioning nut 16, and joins with the electromagnetic stopper 17, The electromagnetic limiting block 17 can be limited on the positioning nut 16 .

[0027] When in use, first energize the electromagnetic limit block 17, and use the electromagnetic force to attract the electromagnetic limit block 17, so that the guide rod 13 positions the die pusher 9 and the vertical molding die pusher 12 in the...

Embodiment 2

[0029] As a further optimization description of the above implementation:

[0030] An observation window 18 is arranged outside the vacuum chamber 1 .

[0031] The purpose is to directly use the observation window 18 to observe the heating range of the tungsten filament 7 to be formed. When the tungsten filament is heated to bright red, it can be pressed, which has the advantage of convenience and quickness.

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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...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B21F1/00
CPCB21F1/004
Inventor徐朝胜史磊马兆龙余照飞梁峰刘念
Owner合肥聚能电物理高技术开发有限公司