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A brazing method for horizontal insulators on the side walls of packaged metal shells without protruding

A technology of metal shell and brazing method, which is applied in the direction of metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problems of complex type and use, difficulty, unfavorable batch production, etc., and achieve the effect of enhanced versatility

Active Publication Date: 2019-11-12
NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to place the Ag-Cu solder when welding this side wall insulator, because it is necessary to ensure that the solder flows into the gap, and it is also necessary to prevent it from climbing up on the lead wire of the insulator and causing its size to change, and the solder is difficult to fix from the side
In addition, if a special mold is used for positioning, due to the difference in the height of the shell and the height of the chip, the type and use of the mold are more complicated, which is not conducive to mass production
During the brazing process, the insulator will slide to a certain extent in the hole, and it is difficult to achieve no convexity without special methods.

Method used

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  • A brazing method for horizontal insulators on the side walls of packaged metal shells without protruding
  • A brazing method for horizontal insulators on the side walls of packaged metal shells without protruding
  • A brazing method for horizontal insulators on the side walls of packaged metal shells without protruding

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Experimental program
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Effect test

Embodiment 1

[0033] The manufacture of a certain type of single-cavity metal wall shell with an insulator outer conductor diameter of 2mm and a lead wire diameter of 0.5mm. The structure of the insulator is shown in Figure 3-a). The height of the metal shell wall is 4mm, and the height of the insulator installation hole to the center of the ground is 2mm. The height of the center hole of the square tile to the ground is 0.5mm. The molybdenum sheet clip is made according to the manufacturing method described in the summary of the invention, and the obtained shape is shown in Figure 2-c). The specific bending degree of the clip is variable, and it is only necessary to maintain a certain clamping force at the lower end of the clip. After the shell is placed horizontally, according to the installation method described in the content of the invention, the structure shown in Figure 3-b) is formed, and brazing can be performed. After the welding is completed, the clips are removed and the tiles...

Embodiment 2

[0035] A complex multi-cavity shell, insulators need to be welded on the upper and lower sides of the cavity, the diameter of the outer conductor of the insulator is 1.8mm, and the diameter of the lead wire is 6mm. The ceramic plates and clips in Case 1 are still used. When installing, install all the insulators on the upper side first, and the installation method is the same as Case 1. After the upper side is installed, turn the shell upside down and place it on the graphite block whose height exceeds the clamp, and then install all the insulators on the lower side, as shown in Figure 3-c). When brazing, the whole structure together with graphite is put into the furnace for brazing to realize one-time welding of front and back insulators.

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Abstract

The invention relates to a brazing method for horizontal insulators on the side walls of packaged metal shells that does not protrude, which is used for fixing solder in packaging and assembly and ensuring that the insulators do not protrude after welding. The ceramic sheet with a square hole in the middle is tightly attached to the inner wall to prevent the insulator from protruding, and the ring-shaped ceramic sheet is used to fix the solder and prevent the insulator from protruding outward. Its brazing method includes: 1) when installing, insert the center of the opening of the square tile along the insulator lead until it touches the metal wall; 2) form a sandwich-like structure of square tile / insulator / solder / round tile; 3) Use tweezers to adjust the ceramic piece to make it cling to the metal wall or solder, and move the circular ceramic piece and solder to the center of the relative insulator lead to realize the fixation of the solder. Advantages: High versatility. Both ceramic sheet and molybdenum sheet clip can withstand high temperature, can be used repeatedly, and the cost is low. It can effectively control the failure rate of the tube shell due to the protrusion of the insulator within 2%.

Description

technical field [0001] The invention relates to a method for brazing horizontal insulators on the side walls of packaged metal shells that does not protrude. It is specially formulated to realize the flat welding of horizontal insulators on the side walls of metal shells in packages, and belongs to the technical field of electronic package shell manufacturing. Background technique [0002] One of the typical features of the glass-metal wall package is the use of coaxial input and output terminals, which have small microwave transmission loss and voltage standing wave ratio. Due to the good microwave performance and manufacturability of this type of casing, it is widely used in various fields such as communication and equipment manufacturing. In order to ensure the coaxial transmission performance, the current method of manufacturing this type of housing is mainly to process the input and output terminals into a type of glass insulator with good coaxiality, embed them in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K31/02
CPCB23K31/02
Inventor 申忠科董一鸣戴洲梁正苗
Owner NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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