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High-frequency waveguide assembly with welding flux overflow suppression structure and welding method

A high-frequency wave and solder technology, applied to waveguide devices, waveguides, welding equipment, etc., can solve problems such as solder shortage on the welding surface, solder accumulation in the waveguide cavity, and disordered solder flow, so as to reduce solder flow and optimize thickness and flatness , Use the effect that the performance is not affected

Active Publication Date: 2022-02-08
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of disorderly flow of solder during brazing of the cover plate and shell of the high-frequency waveguide assembly, resulting in missing solder on the welding surface, accumulation of solder in the waveguide cavity, short circuit of the connector, etc., the present invention provides a solder flow suppression structure high-frequency waveguide components, and at the same time, provide a welding method for high-frequency waveguide components with a structure that suppresses solder flooding

Method used

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  • High-frequency waveguide assembly with welding flux overflow suppression structure and welding method

Examples

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Embodiment 1

[0055] Embodiment 1 takes a waveguide power splitter as an example.

[0056] see figure 1 , the waveguide power splitter includes a cover plate 1 and a waveguide shell 3 . In order to prevent the solder piece 4 from flowing into the waveguide cavity 2 after melting, the waveguide shell 3 has been improved in technology; see figure 2 The waveguide housing 3 is provided with a waveguide cavity 2, the top surface of the waveguide housing 3 is a welding surface, the welding surface is provided with a solder resist dam 31, and the solder resist dam 31 forms a closed area along the contour of the welding surface.

[0057] The width of the welding surface between adjacent solder resist dams 31 on the waveguide shell should be selected properly; on the premise of ensuring the welding quality, the welding area should be reduced to control the disordered flow of solder. The width of the welding surface is twice the thickness of the cover plate.

[0058] see image 3 , the solder re...

Embodiment 2

[0072] see Figure 5 and Figure 6 , Embodiment 2 takes a certain waveguide cavity component as an example.

[0073] see Figure 5 and Figure 7 The shape of the contact welding surface between the waveguide shell 3 and the cover plate 1 is complex and the width is large. Firstly, the hollow area 32 is designed for the area with a large thickness, so as to reduce the welding area. The width of the welding surface is twice the thickness of the cover plate, and the overly wide part of the waveguide housing 3 is hollowed out to remove the material in the hollowed out area 32 so that the width of the welding surface meets the technical requirements. see Figure 6 , the top surface of the waveguide housing 3 is a welding surface, and the welding surface is provided with a solder resist dam 31 , and the solder resist dam 31 forms a closed area along the contour of the weld surface.

[0074] The height H of the solder resist dam 31 阻焊坝 The setting should avoid the shortage of s...

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Abstract

The invention discloses a high-frequency waveguide assembly with a welding flux overflow suppression structure and a welding method, and belongs to the technical field of vacuum brazing welding. The top surface of a waveguide shell is a welding surface, a solder resist dam is arranged on the welding surface, and the solder resist dam forms a closed area along the contour of the welding surface; by improving the manufacturability of the high-frequency waveguide assembly, on one hand, disordered flowing of welding flux is effectively restrained through the solder resist dam, on the other hand, accurate control over welding flux overflowing is achieved, and the size accuracy of a waveguide cavity is improved; and according to the thickness of a soldering lug and a welding area, on the basis of a welding principle in a welding flux melting process, calculation is performed to obtain an optimal size range of the solder resist dam. According to the welding method, a hollow structure is arranged on the waveguide shell, the structure of the soldering lug is optimized, the thickness and flatness of a welding cover plate are optimized, a vacuum brazing process method is adopted, so that the possibility of welding flux overflowing is further reduced. According to the high-frequency waveguide assembly with the welding flux overflow suppression structure and the welding method of the invention, the quality and the yield of the high-frequency waveguide assembly are improved, and the consistency of the quality of the high-frequency waveguide assembly is ensured.

Description

technical field [0001] The invention belongs to the technical field of vacuum brazing and welding, and in particular relates to a high-frequency waveguide assembly and a welding method with a structure for suppressing solder overflow. [0002] It is mainly through the installation of solder resistance dams on both sides of the waveguide side wall, and the structural design of the cover plate and the shell, so as to prevent the cover plate of the waveguide cavity power divider from flowing into the waveguide cavity during the low-temperature brazing process. Structural forms and methods. Background technique [0003] The high-frequency waveguide component with high performance such as low loss, large power capacity, and large bandwidth is mainly composed of three parts: the shell, the cover plate and the connector; the shell is designed with a sunken channel, and the channel passes through the shell and the cover plate The tight fit forms a closed cavity, that is, the wavegu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P3/00H01P11/00B23K1/008H01P1/00
CPCH01P3/00H01P1/00B23K1/008H01P11/00H01P11/001
Inventor 许春停付任陈该青吴瑛张辉周明智李盛鹏田野
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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