Support structure and brazing method of thin-walled asymmetric device in brazing furnace

Abstract

The invention discloses a support structure of a thin-walled asymmetric device in a brazing furnace and a brazing method thereof, which belong to the technical field of thermal processing. The thin-walled cavity of the brazing device is provided with a heat block, which can effectively realize the stable setting of the thin-walled asymmetric device to be brazed in the brazing furnace, and prevent the top of the thin-walled asymmetric device from heating up too quickly during the brazing process. The resulting melting damage enables fast, stable, batch brazing of thin-walled asymmetric devices. The invention is suitable for the support structure of thin-walled asymmetrical devices, and has the advantages of simple structure, convenient disassembly and assembly, high stability of the brazing process, and can quickly realize batch feeding, brazing and welding of thin-walled asymmetrical devices in a brazing furnace. Reclaiming the material can greatly improve the brazing efficiency and brazing quality of the thin-walled asymmetric device, reduce the molding cost of the thin-walled asymmetric device and the application cost of the waveguide device, and has a good application prospect and promotion value.

Description

technical field [0001] The invention belongs to the technical field of thermal processing, and in particular relates to a supporting structure of a thin-walled asymmetric device in a brazing furnace and a brazing method thereof. Background technique [0002] In the fields of radio communication, radar, navigation, etc., thin-walled aluminum alloy asymmetric structure devices are widely used. They are often welded by various shapes of thin-walled cavities and bottom plates. It is a device with energy conversion and orientation. Basic devices with radiation or receiving functions have huge differences in their structural forms, and are often asymmetrical structures with one side open and the other side closed, such as figure 2 shown in . [0003] In the process of design and manufacture of waveguide devices, multiple devices are often required to be used in arrays, resulting in a large demand for thin-walled aluminum alloy asymmetric structure devices. In order to reduce the...

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Problems solved by technology

[0004] At present, due to the limitation of the asymmetric structure, for the units with small volume, most of the thin-walled aluminum alloy asymmetric devices are brazed by manual flame brazing. Although this method can achieve brazing to a certain extent, but The brazing efficiency of the device is low, resulting in high cost of device preparation, and the manual brazing method requires high skill of the operator, and there are large human errors in manual brazing, resulting in uneven brazing quality and low production efficiency ; Although vacuum brazing furnaces can also be used in the prior art to form thin-walled aluminum alloy asymmetric devices to improve the molding quality of the devices, the application cost of vacuum brazing furnaces is high and the molding efficiency is low. Not only can it not effectively reduce the molding cost of asymmetric devices, but it is also difficult to achieve high-efficiency mass production of a single unit; in addition, in the prior art, brazing of devices with larger structures or symmetrical structures can also be performed through an air brazing furnace. However, the efficiency is often low, and for thin-walled asymmetric structural parts, it is very easy to cause the temperature of the thin-walled opening end to be too high and melt during the welding process, which will lead to the scrapping of the device and cause unnecessary losses.

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