High-efficiency and high-consistency cathode assembly welding method for Ku-band communication traveling wave tube

Abstract

The invention relates to the technical field of stack type welding mold design and welding, and discloses a high-efficiency and high-consistency cathode assembly welding method for a Ku-band communication traveling wave tube. The high-efficiency and high-consistency cathode assembly welding method comprises the following steps of S1, mold assembly; S2, solder coating; S3, assembling a cathode and a mold; S4, assembling the cathode and the mold; and S5, welding quality inspection. According to the high-efficiency and high-consistency cathode assembly welding method for the Ku-band communication traveling wave tube, a stack type self-adjusting welding mold is adopted, a cathode cylinder is fixed to the mold, and the parallelism and concentricity of an assembly formed by combining an emitter and the cathode cylinder are strictly controlled before welding, and it is guaranteed that after the welding, the emitter vertically moves downwards, the emitter moves downwards in parallel, the cathode which is firmly welded is obtained, and the welding quality of a heater assembly is improved.

Description

technical field [0001] The invention relates to the technical field of stack welding mold design and welding, in particular to a high-efficiency and high-consistency cathode component welding method for a Ku-band communication traveling wave tube. Background technique [0002] Microwave vacuum electronic devices are widely used in electronic countermeasures, precision guidance, deep space detection systems, high-resolution imaging and interstellar communication and other related systems, and are known as the "heart" of weapons and equipment. With the rapid development of microwave devices such as new-generation weapons and equipment and communication satellites, new requirements are put forward for the power, frequency and reliability of devices. Impact. The assembly of the cathode assembly is one of the core technologies in the manufacture and development of the cathode of microwave electric vacuum devices. Traveling wave tubes can be divided into bomb-borne, airborne, shi...

AI Technical Summary

Problems solved by technology

[0004]For the cathode assembly of the Ku-band traveling wave tube, the size of the assembly is small and requires the cooperation of multiple small-sized parts, the size of the solder coating between the base and the sleeve And the amount of solder coating is inconsistent, which will affect the combination of parts and reduce the reliability of the device; on the other hand, if the welding tooling mold cannot guarantee the welding temperature zone of the component, there will be a weld seam in the component and a gap between the substrate and the sleeve. Inconsistency in the diffusion of solder, which in turn affects the heating efficiency of the cathode assembly and the efficiency of the whole tube. Therefore, it is very necessary to design a special welding tooling mold and master the welding method to ensure the consistency of welding.

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