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Liquid cooling shell vacuum brazing method

A brazing method and vacuum technology, applied in the field of metal welding, can solve problems such as clogging of water channels, reduce overflow, ensure welding tightness, and increase set temperature.

Active Publication Date: 2022-03-22
ANHUI BOWEI CHANGAN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a vacuum brazing method for liquid-cooled shells, which can solve the problem of water channel blockage during shell welding, and realize high-quality and high-efficiency welding of liquid-cooled shells

Method used

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  • Liquid cooling shell vacuum brazing method

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A vacuum brazing method for a liquid-cooled shell, comprising the following steps:

[0026] S1. Solder tab processing and pretreatment: Cut the solder tab according to the cross-sectional shape of the welded part, and polish the cut solder tab, and then use acetone to wipe and dry it;

[0027] The solder sheet is made of AlSiMg10-1.5 with a thickness of 0.05mm and a melting point of 559°C-591°C.

[0028] S2. Assembly of welded parts and solder tabs: evenly place a number of solder tabs between two welded parts, and place them on a cleaned welding plate after assembly; the welded plate is also cleaned with acetone;

[0029] S3. Placing the briquetting block: adopt the single-piece briquetting block 1, and compact it on the surface of the workpiece 2 according to the placement position of the welding piece;

[0030] combine figure 2 , the quantity of the briquettes 1 is 24, and the weight of a single briquette 1 is 1.37kg. The placement positions of the pressing block...

Embodiment 2

[0037] A vacuum brazing method for a liquid-cooled shell, comprising the following steps:

[0038] S1. Solder tab processing and pretreatment: Cut the solder tab according to the cross-sectional shape of the welded part, and polish the cut solder tab, and then use acetone to wipe and dry it;

[0039] The solder sheet is made of AlSiMg10-1.5 with a thickness of 0.07mm and a melting point of 559°C-591°C.

[0040] S2. Assembly of welded parts and solder tabs: evenly place a number of solder tabs between two welded parts, and place them on a cleaned welding plate after assembly; the welded plate is also cleaned with acetone;

[0041] S3. Placing the briquetting block: adopt the single-piece briquetting block 1, and compact it on the surface of the workpiece 2 according to the placement position of the welding piece;

[0042] The quantity of the briquettes 1 is 28, and the weight of a single briquette 1 is 1.23kg. The placement position of the pressing block 1 corresponds to the ...

Embodiment 3

[0049] A vacuum brazing method for a liquid-cooled shell, comprising the following steps:

[0050] S1. Solder tab processing and pretreatment: Cut the solder tab according to the cross-sectional shape of the welded part, and polish the cut solder tab, and then use acetone to wipe and dry it;

[0051] The solder sheet is made of AlSiMg10-1.5 with a thickness of 0.1mm and a melting point of 559°C-591°C.

[0052] S2. Assembly of welded parts and solder tabs: evenly place a number of solder tabs between two welded parts, and place them on a cleaned welding plate after assembly; the welded plate is also cleaned with acetone;

[0053] S3. Placing the briquetting block: adopt the single-piece briquetting block 1, and compact it on the surface of the workpiece 2 according to the placement position of the welding piece;

[0054] The quantity of the briquette 1 is 32 pieces, and the weight of a single briquette 1 is 1.08kg. The placement position of the pressing block 1 corresponds to t...

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Abstract

The invention discloses a vacuum brazing method for a liquid-cooled shell, comprising the following steps: S1, processing and pretreatment of welding pieces; S2, assembling welding parts and welding pieces; S3, placing a briquetting block: adopting a single briquetting block, According to the placement position of the welding piece, compact on the surface of the workpiece; S4, cover stainless steel cover: cover the workpiece with a stainless steel cover, and place a certain amount of magnesium in the stainless steel cover; S5, welding; S6, post-weld treatment and processing of the shell. The invention reduces the overflow of solder under vacuum atmosphere by reducing the thickness of the solder sheet, reducing the number of welding briquettes, the amount of magnesium used, increasing the set temperature, and reducing the power-off temperature. The problem of welding blockage is avoided, and high-quality batch production welding of liquid-cooled shells is satisfied.

Description

technical field [0001] The invention relates to the field of metal welding, in particular to a vacuum brazing method for a liquid-cooled housing. Background technique [0002] The DAM shell is an important part of the active phased array radar antenna. A radar antenna often has a large number of DAM shells. The cooling method adopts internal circulation liquid cooling. The liquid cooling form requires the tightness and liquid flow of the shell. very high. The liquid-cooled shell is formed by vacuum brazing of two identical blanks with channel grooves. Due to the small diameter of the inlet and outlet water channels, it is necessary to prevent the inlet and outlet water channels from being blocked in addition to ensuring sealing during welding. The thickness of the solder sheet used in the welding of the existing liquid-cooled shell is 0.15mm, and the number of briquettes compacted on the surface of the workpiece is at least 36. When the shell is welded, it is very easy for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/00B23K1/008B23K1/19B23K1/20
CPCB23K1/0008B23K1/008B23K1/19B23K1/206
Inventor 华巍张群周运海
Owner ANHUI BOWEI CHANGAN ELECTRONICS
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