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Preparation method for aluminum foil welding solder organic flux

An organic flux, aluminum foil technology, applied in welding equipment, welding/cutting medium/material, welding medium, etc., can solve the problem of not meeting the requirements of welding technology progress, achieve small deformation after welding, low welding temperature, melting point far effect

Inactive Publication Date: 2016-03-23
四川泛华航空仪表电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous diversification of weld shapes and the improvement of industrial automation, traditional welding methods can no longer meet the requirements of welding technology progress.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In an environment with a temperature of 20±5° C. and a humidity of 70% to 80%, the organic flux for aluminum brazing is prepared by weighing the weight percentages of cadmium fluoroborate, ammonium fluoroborate, zinc fluoroborate, and triethanolamine. The specific method can be: according to any specific value in the following weight percentages, weigh 80wt% of triethanolamine, 4wt% of cadmium fluoroborate, 10wt% of ammonium fluoroborate, and 6wt% of zinc fluoroborate; first put 4wt% of cadmium fluoroborate into Grind into fine powder in a mortar; then put 10wt% ammonium fluoroborate into the mortar and mix together; finally add 6wt% zinc fluoroborate, grind and mix the three together evenly, and then pour it into a glass container that has weighed 80wt% triethanolamine medium (beaker), stir well with a glass rod, and place at the same room temperature for 30 minutes.

Embodiment 2

[0022] In an environment with a temperature of 20±5°C and a humidity of 70% to 80%, add 82wt% of triethanolamine, 3wt% of cadmium fluoroborate, 5wt% of ammonium fluoroborate, and 10wt% of zinc fluoroborate according to the components specified in Table 1; First put 3wt% cadmium fluoroborate into a mortar and grind it into a fine powder; then put 5wt% ammonium fluoroborate into the mortar and mix together; finally put 10wt% zinc fluoroborate, grind and mix the three together evenly, and then pour In a glass container (beaker) that has weighed 82wt% of triethanolamine, stir well with a glass rod, and place it at the same normal temperature for 30 minutes.

Embodiment 3

[0024] Repeat the method of Experimental Example 2 by each combination content specified in Table 1, but replace triethanolamine with hexamethylenediamine.

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Abstract

The invention provides a preparation method for an aluminum brazing organic flux. An alumina film can be damaged at the temperature of 180 DEG C-275 DEG C, deformation is small after the alumina film is welded, stabilizing and shaping is achieved, corrosion is avoided, corrosion to aluminum and aluminum alloy is very small, the welding temperature is far from the melting point of an aluminum material, the welding process is reliable, and the brazing qualified rate is greater than 98%. According to the technical scheme, 70 wt%-90 wt% of triethanolamine, 1 wt%-5 wt% of zinc tetrafluoroborate hydrate, 5 wt%-10 wt% of cadmium fluoroborate, and 5 wt%-10 wt% of ammonium fluoroborate are added; the zinc tetrafluoroborate hydrate, the cadmium fluoroborate and the ammonium fluoroborate are weighed at the room temperature and put into a mortar to be ground into fine powder, and grinding and mixing are uniform; the uniformly ground and mixed drug is poured into the weighed triethanolamine, and after being stirred uniformly, the drug is placed for a certain period of time. The welding problems of the aluminum, the aluminum alloy, aluminum bronze and aluminum brass at the temperature of 180 DEG C-275 DEG C are solved through the preparation method.

Description

technical field [0001] The invention relates to a method for preparing an organic flux for low-melting-point welding brazing material between aluminum foils, in particular to a method for preparing an organic flux for aluminum brazing for welding between ultra-thin aluminum foils. Background technique [0002] In the prior art, aluminum foil and aluminum foil, aluminum foil and aluminum sheet have always been a difficult problem in welding. The welding between aluminum foils must first remove the oxide film. It is very difficult to weld by adjusting the mechanical structure. At present, there is no commercial solder with good electrical connection performance, which is suitable for welding between aluminum foils. The welding problems of thinner aluminum foil strips and aluminum lead wires are bothering various manufacturers. In the conventional argon arc welding method commonly used in the prior art, in the welding of such working conditions, because the aluminum row does ...

Claims

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Application Information

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IPC IPC(8): B23K35/36B23K103/10
CPCB23K35/3612B23K2103/10
Inventor 郝琼
Owner 四川泛华航空仪表电器有限公司
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