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A screening process of Kovar alloy for magnetron

A magnetron and alloy technology, applied in the field of magnetrons, can solve problems affecting the performance of magnetrons, and achieve the effects of eliminating hidden dangers of vacuum leaks, optimizing inspection results, and reducing failure rates.

Active Publication Date: 2021-04-30
上海翰逸环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current production process of high-power magnetrons, the failure rate of cathode and filament glass-metal sealing components accounts for about 5% of the total failure rate, which affects the performance of magnetrons.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A screening process for Kovar alloys for magnetrons, the screening process comprising the following steps: sequentially annealing Kovar alloys; alternating high and low temperature treatments; microstructure inspection, rejecting unqualified products; vacuum airtightness Inspection; vacuum degassing.

Embodiment 2

[0030] A screening process for Kovar alloys for magnetrons, the screening process comprising the following steps: sequentially annealing Kovar alloys; alternating high and low temperature treatments; microstructure inspection, rejecting unqualified products; vacuum airtightness inspection; vacuum degassing;

[0031] Wherein, the annealing treatment is performed in a hydrogen atmosphere.

Embodiment 3

[0033] A screening process for Kovar alloys for magnetrons, the screening process comprising the following steps: sequentially annealing Kovar alloys; alternating high and low temperature treatments; microstructure inspection, rejecting unqualified products; vacuum airtightness inspection; vacuum degassing;

[0034] Wherein, the annealing treatment is carried out in an atmosphere of hydrogen;

[0035] The specific operation of the annealing treatment is as follows: in a hydrogen furnace, first heat the Kovar alloy to 850°C and keep it for 30 minutes; then lower the temperature to 150°C and keep it for 30 minutes; then raise the temperature to 950°C and keep it for 60 minutes; then cool down to 150°C , keep warm for 30min; then heat up to 1050°C, keep warm for 30min; then cool down to 150°C, keep warm for 30min; then heat up to 1100°C, keep warm for 15min; then cool down to 150°C, keep warm for 30min; finally cool to room temperature;

[0036] The cooling rate is 5°C / min;

[...

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Abstract

The invention relates to the technical field of magnetrons, in particular to a screening process for Kovar alloys for magnetrons. The screening process includes the following steps: sequentially annealing the Kovar alloys; alternating high and low temperature treatments; microstructure Inspection, rejecting unqualified products; vacuum air tightness inspection; vacuum degassing treatment. The invention can significantly reduce the failure rate of the magnetron cathode and filament glass-metal sealing assembly.

Description

technical field [0001] The invention relates to the technical field of magnetrons, in particular to a screening process for Kovar alloys for magnetrons. Background technique [0002] A magnetron is an electric vacuum device used to generate microwave energy. It is essentially a diode placed in a constant magnetic field; the electrons in the tube interact with the high-frequency electromagnetic field under the control of a constant magnetic field and a constant electric field perpendicular to each other. , Convert the energy obtained from the constant electric field into microwave energy, so as to achieve the purpose of generating microwave energy. [0003] Electron linear accelerators at home and abroad widely use high-power magnetrons as power sources, mainly 2.6MW, 4.8MW, and 5.5MW magnetrons. This type of magnetron has the characteristics of high power, low voltage, high current, high efficiency, wide pulse, precision mechanical tuning, etc., and has excellent radio freq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07C5/34B07C5/02C21D1/26C21D1/74C21D1/78
CPCB07C5/02B07C5/34C21D1/26C21D1/74C21D1/785
Inventor 江祝苗
Owner 上海翰逸环保科技有限公司
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