Manufacturing method for thin-walled-round-table-shaped lower heat shield parts of electron gun of klystron

Abstract

The invention discloses a manufacturing method for thin-walled-round-table-shaped lower heat shield parts of an electron gun of a klystron. The thin-walled-round-table-shaped lower heat shield comprises a forward extending part and a backward extending part; the forward extending part comprises a forward hollow cylindrical drum and a forward bottom part, wherein the forward bottom part is connected with the end face of the forward hollow cylindrical drum; and the backward extending part comprises a backward hollow cylindrical drum and a backward top part, wherein the backward top part is connected with the end face of the backward hollow cylindrical drum. With the adoption of sectional molding for complex and repeated stamping extending part, the repeated and complex stamping extending method is not required, a plurality sets of extending molds are saved, only simple spot welding mold are required so that scrapping of the parts in the machining process can be avoided, repeatedly stamping extending of a thin-walled part is avoided, machining difficulty of the electron gun part is effectively lowered, the trial production period is shortened, producing cost is reduced, and the finished product ratio of the part is improved.

Description

technical field [0001] The invention relates to the technical field of high-power klystrons, in particular to a method for manufacturing a thin-walled frustum-shaped lower heat shield part of a klystron electron gun. Background technique [0002] The electron gun is a key part of the klystron. Since the cathode of the klystron has a relatively high operating temperature, the operating temperature of the common oxide cathode is 850°C, while the operating temperature of the barium tungsten cathode is 1050°C; in addition, the cathode activation temperature is higher, and the oxide cathode It is 1050°C, while the barium tungsten cathode is as high as 1250°C. The shell of the klystron is about 100°C, so the heat preservation of the electron gun is very important. [0003] The material used, the material specification and the design shape of the electron gun parts are the key factors for the thermal insulation of the electron gun. The parts materials used in electron guns genera...

AI Technical Summary

Problems solved by technology

Even so, it is often necessary to take auxiliary measures, such as pre-spot welding a piece of thin-walled metal on the material to be processed, and the trial mold adjustment takes a long time, and the trial mold cost is high, so the manufacturing cost of the entire part is high and the trial production cycle is long

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