High-frequency induction brazing method and high-frequency inductor for a new type of feed horn

Abstract

The invention discloses a novel feed horn high frequency induction brazing method and a high frequency inductor. The novel feed horn high frequency induction brazing method comprises the following steps: firstly designing a horn structure, and enabling the assembling clearance of the connector between each of horns and the corresponding flange to be smaller than 0.1 mm; after processing horns and flanges, performing preassembling; cleaning qualified horns and flanges, and removing surface impurities; fixing the horns and the flanges on a working table, pre-coating with a brazing flux, and setting the distance between the high frequency inductor and the connectors; limiting the distance as 1-4 mm, re-calibrating the welding gap between each of the horns and the corresponding flange; arranging high frequency induction heating equipment, adjusting the output power and the welding technological parameters; adopting a high frequency induction brazing method, heating the connectors, and adding brazing filler metal after the brazing flux is molten; welding the connectors in sequence in a symmetric manner, performing post-welding cleaning after the workpieces are cooled so as to remove the residual brazing flux; one end of the connecting frame of the high frequency inductor is connected with one end part of an induction coil, and the other end is connected with an electrode; the induction coil is M-shaped, or a magnetizer is embedded in the lower part of the induction coil.

Description

technical field [0001] The invention relates to a high-frequency induction brazing method for a novel feed source horn, and belongs to the technical field of brazing and waveguide manufacturing. Background technique [0002] With the development of aerospace, aviation, and electronic information technology, microwave devices are used more and more widely, and play a vital role in important sensors, signal transmission and feedback systems, communication systems, and electronic information systems. The feed horn is an important microwave component of the feeder subsystem in a product, which directly affects the accuracy of the signal, and its reliability also determines the working stability of the product, which plays a decisive role in the long-term stable and accurate work of the product. Induction brazing is a method that relies on the resistance heat of the induced current generated by the workpiece in the alternating magnetic field of alternating current to heat the wor...

AI Technical Summary

Problems solved by technology

[0004] In order to ensure the plane accuracy and dimensional accuracy of the speaker, the commonly used speaker manufacturing process is the mosaic structure electroforming process. The time period for manufacturing the electroforming core and electroforming is long, and there is a lot of material waste. The layer (inner wall) is prone to pores, and the bonding force between the flange and the horn is not good. There is a risk of flange falling off during subsequent processing. In the subsequent electroplating process, quality defects such as weak plating, blackening, and falling off occur

Products often need to be reworked and repaired, and the yield rate can only be maintained at about 60%. The quality stability and reliability of the product are not high enough, and some components will gradually expose problems such as plating defects during subsequent use.

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