Travelling wave tube collector assembly and assembly process thereof

Abstract

The invention discloses a travelling wave tube collector assembly and an assembly process thereof. The travelling wave tube collector assembly comprises a collector inner core and a collector sleeve, the collector inner core is arranged in the collector sleeve, and an insulating ceramic is arranged between the collector inner core and the collector sleeve; the insulating ceramic is made of a molybdenum copper material; and the assembly technology of the travelling wave collector assembly finishes welding process among the insulating ceramic, the travelling wave tube inner core and the travelling wave tube sleeve by using palladium-based brazing filler metal and a way of increasing the height of a solder groove. According to the travelling wave tube collector assembly and the assembly process thereof disclosed by the invention, the assembly quality of the travelling wave tube collector assembly can be ensured and further the product performance of the travelling wave tube can be guaranteed.

Description

technical field [0001] The invention relates to the field of microwave electronic devices, in particular to a collector assembly of a traveling wave tube and an assembly process thereof. Background technique [0002] The collector assembly of the traveling wave tube includes a collector sleeve and a collector inner core arranged inside the collector sleeve, and an insulating ceramic is arranged between the collector sleeve and the collector inner core; currently, for traveling wave The collector inner core of the tube collector assembly is made of molybdenum. As the material of the electron tube, molybdenum plays an important role in the traveling wave tube, but this material has many disadvantages. First of all, pure molybdenum will crystallize at 1000°C. Once crystallized, the material will become brittle and affect the quality of TWT parts. Therefore, the temperature should not be too high during annealing and degassing, and it is difficult to ensure the assembly quality ...

AI Technical Summary

Problems solved by technology

First of all, pure molybdenum will crystallize at 1000°C. Once crystallized, the material will become brittle and affect the quality of TWT parts. Therefore, the temperature should not be too high during annealing and degassing, and it is difficult to ensure the assembly quality of TWT; Secondly, ceramic cracking will occur when molybdenum is directly brazed with ceramic rods, which further affects the assembly quality of traveling wave tube components; finally, molybdenum needs to be electroplated with nickel when brazed with insulating ceramics, and pure molybdenum is limited by material properties. , the collector core made of pure molybdenum material will leave turning tool marks and unevenness on the surface during processing. These turning tool marks and unevenness will affect the quality of the electroplating layer on the surface of the collector core, and it is difficult to ensure the integrity of the collector assembly of the traveling wave tube. Assembly quality, which makes it difficult to guarantee the performance of TWT products

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