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A rapid prototyping device for tungsten filament in vacuum state and its prototyping process

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

Active Publication Date: 2021-11-05
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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  • A rapid prototyping device for tungsten filament in vacuum state and its prototyping process
  • A rapid prototyping device for tungsten filament in vacuum state and its prototyping process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0026] The die pusher 9 and the vertical forming die pusher 12 respectively include a guide rod 13 affixed to the top surface of the die forming die 8 and the vertical forming die 11. The outer guide rod 13 is sleeved with a bellows 14 along the axial direction. Pipe 14 is arranged in positioning bracket 15, and the top of positioning bracket 15 is provided with the positioning nut 16 that can be adjusted along the height direction of positioning bracket 15, and the top of guide rod 13 stretches out positioning nut 16, joins with electromagnetic stop block 17, electromagnetic The 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 waiting state, ...

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 tungsten filament rapid prototyping device and process in a vacuum state. The prototyping device includes a vacuum chamber, which is respectively connected with a vacuum system, an electric heating system and a nitrogen gas injection system. Die forming die, punch forming die and vertical forming die for tungsten filament pressing; forming process includes steps such as closing the die forming die and punch forming die. The invention is simple in structure, easy to use, realizes one-time rapid prototyping of the tungsten filament without destroying the characteristics of tungsten, and can effectively meet the manufacturing requirements of the tungsten filament in the arc chamber of the NBI ion source.

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 & Authority Patents(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