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Welding method of stainless steel plate-fin radiator

A stainless steel plate, welding method technology, applied in welding equipment, welding equipment, manufacturing tools and other directions, can solve the problems of radiator core leakage, brazing seam is easy to be cracked, etc., to improve the qualification rate of brazing, solve the problem of brazing Weld cracking effect

Inactive Publication Date: 2013-06-19
GUIZHOU YONGHONG AVIATION MACHINERY
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  • Abstract
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Problems solved by technology

[0007] B. When the gas collecting hood and the radiator core assembly are welded by argon arc welding, the argon arc welding seam is directly in contact with the brazing on the radiator core assembly. During the welding process, the brazing on the radiator core assembly The weld seam is easily pulled and cracked, causing the radiator core to leak

Method used

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  • Welding method of stainless steel plate-fin radiator
  • Welding method of stainless steel plate-fin radiator
  • Welding method of stainless steel plate-fin radiator

Examples

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Embodiment Construction

[0027] This example is a method of applying metal flake solder to the radiator core assembly, adding connecting plates, enlarging side plates, and adopting two times of vacuum brazing and two times of argon arc welding to make a stainless steel plate-fin radiator. Its implementation steps are:

[0028] 1. Parts preparation: radiator core assembly 9 is composed of side plate 1, long seal 2, short seal 3, cold side fin 4, hot side fin 5, and partition 6. The original shape of the side plate is Figure 4 The rectangle shown has a size of 300×170×1.5mm. After improvement, add 10mm to each of the four sides of the side plate to become Figure 5 As shown in the shape, increase the connection plate 7, the shape of the connection plate 7 is as image 3 As shown, the size is: 300×10×1.5mm, and the parts are processed in place according to the drawings;

[0029] 2. Carry out the first vacuum brazing of the radiator core assembly 9: select a stainless steel metal brazing sheet instead ...

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Abstract

A radiator cell component 9 is formed by a side plate 1, a long strip seal 2, a short strip seal 3, cold edge fins 4, hot edge fins 5 and partition plates 6. When the radiator cell component 9 is assembled and brazed, metal-sheet-shaped stainless steel brazing filler metal is selected, a connection plate 7 is added between the radiator cell component 9 and a gas-collecting hood 8, meanwhile the side plate 1 is enlarged, and a stainless steel plate-fin radiator is made and formed through the method of twice brazing and twice fusion welding. Due to the fact that the metal-sheet-shaped stainless steel brazing filler metal is selected, the first-pass yield of the brazing of the radiator cell component is improved. The connection plate 7 is added to the radiator cell component, the side plate 1 is enlarged, the solder joint of the radiator cell component is far from the welding joint of the arc welding of the gas-collecting hood 8 and the connection plate7 and the side plate 1, and therefore the phenomenon of fissures cannot occur.

Description

Technical field: [0001] The invention is suitable for the welding of stainless steel plate-fin radiators, especially the vacuum brazing of the core of the stainless steel plate-fin radiators. Background technique: [0002] There are three types of radiators: plate-plate type, shell-and-tube type, and plate-fin type. In the case of the same volume, the plate-fin type radiator is the radiator with the highest heat dissipation efficiency and the lightest weight. [0003] The materials of plate-fin radiator mainly include aluminum alloy, stainless steel, etc. At present, aluminum alloy plate-fin radiator has been widely used in machinery, chemical industry, automobile and other fields. Compared with the aluminum alloy plate-fin radiator, the stainless steel plate-fin radiator has the advantages of high temperature (the melting point of stainless steel is 1750°C, and the melting point of aluminum alloy is 650°C), and good corrosion resistance. , aerospace and other fields, stain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02B23K1/008
Inventor 潘峰廖前进罗亮宋玉祥
Owner GUIZHOU YONGHONG AVIATION MACHINERY
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