A Welding Process of Collector Tube Blank

Abstract

The invention discloses a welding process of a collector cylinder blank, which comprises the following steps: firstly put the silver-copper 28 solder piece into the slot of the collector sealing inner cylinder, and then put the collector into the cylinder cover, Put it on the fixture in turn; place the collector ceramic and the collector sealing outer cylinder on the fixture in turn; place between the collector sealing outer cylinder and the collector ceramic, and the slot of the collector sealing inner cylinder. Insert the silver-copper 28 solder wire; finally put the collector lead wire on the silver-copper 28 solder wire, insert it into the hole of the collector sealing inner tube, and the assembly of the collector tube blank is completed, and then enter the hydrogen furnace for welding. The welding process of the collector tube blank in the present invention changes the original two parts welding into one part welding, the yield rate is improved, the welded parts are smooth and bright, the solder flow is uniform, firm and firm, fully meeting all the requirements for the assembly of the whole tube Conditions; reduce the cost, reduce the pollution of parts, and improve the insulation performance.

Description

technical field [0001] The invention relates to the technical field of welding of traveling wave tube devices, in particular to a welding process of a collector cylinder blank. Background technique [0002] The collector tube blank plays the role of collecting electrons in the whole tube of the traveling wave tube. It needs to withstand the power of 1000w when it is working, so the requirements for welding the collector tube blank are very high. The collector tube blank is welded by three materials, namely: 1. Kovar; 2. Oxygen-free copper; 3. Beryllium ceramics. The weldability requirements of the three materials are high, the insulation is also required, and the alignment of the parts is better, so the alignment requirements for the fixture are also high, and only after welding can it be better connected with the slow-wave connection components; beryllium ceramics have good thermal conductivity. , excellent heat dissipation, and plays the main function of heat dissipation ...

AI Technical Summary

Problems solved by technology

The weldability requirements of the three materials are high, the insulation is also required, and the alignment of the parts is better, so the alignment requirements for the fixture are also high, and only after welding can it be better connected with the slow-wave connection components; beryllium ceramics have good thermal conductivity. , excellent heat dissipation, and plays the main function of heat dissipation in the whole tube. Since the number of times of beryllium ceramic welding into the furnace should not be too many, including the three materials, the less the number of times of welding into the furnace, the better. Since there is no good welding fixture, so now In some technologies, multiple weldings are required to weld the collector tube blank. If beryllium ceramics are welded into the furnace many times, they will burst, and once they are cracked, the parts will be scrapped; nickel-plated parts are put into the furnace many times. It will also cause the separation of the nickel layer, resulting in desoldering, which affects the welding yield; the metal vapor of the solder that has been fed into the furnace for many times will also sublimate, causing re-contamination of the parts, so it is necessary to improve the welding process of the collector tube blank

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