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Formula of water-based soldering flux for automatic welding of lead-acid storage battery pole group

A lead-acid battery, automatic welding technology, used in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of poor welding seam quality, affecting battery safety performance, easy to solidify, etc., to improve welding quality. , The composition of the components is reasonable, and the surface activity is sufficient.

Inactive Publication Date: 2019-01-11
HUBEI RUNYANG NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two major deficiencies in the use of oily flux. One is that it is easy to solidify when the ambient temperature is low, and it is not suitable for winter use in severe cold regions.
The second is that the weld quality is not good when used for lead-calcium alloy welding
Another phosphoric acid-based inorganic flux, although the welding quality is very good, but the exhaust gas released during the welding process is toxic, and there are residues at the weld seam after welding
Since the residue is corrosive, incomplete cleaning will inevitably affect the safety performance of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The specific components of this embodiment are measured as follows by mass percentage:

[0033] Succinic Acid 18%;

[0034] Adipic acid 15%;

[0035] Polyethylene glycol 1000 15%;

[0036] Glycerin 10%;

[0037] Triethylene glycol 10%;

[0038] Dimethyl Oxalate 2%;

[0039] Dimethyl glutarate 2%;

[0040] FSN 0.5%;

[0041] Benzotriazole 0.5%;

[0042] Dibromobutenediol 5%;

[0043] Deionized water 22%.

Embodiment 2

[0045] Succinic Acid 40%;

[0046] Glycerin 20%;

[0047] Tetradecyl Alcohol 10%;

[0048] Butyl acetate 3%;

[0049] FSN 0.8%;

[0050] Benzotriazole 1.2%;

[0051] Dibromobutenediol 4%;

[0052] Deionized water 21%.

Embodiment 3

[0054] Adipic acid 50%;

[0055] Polyethylene glycol 1000 5%;

[0056] Polyethylene glycol 1500 5%;

[0057] Glycerin 5%;

[0058] Tetradecyl Alcohol 5%;

[0059] Butyl acetate 2%;

[0060] Dimethyl Oxalate 3%;

[0061] FSN 1%;

[0062] Benzotriazole 1.5%;

[0063] Dibromobutenediol 3%;

[0064] Deionized water 19.5%.

[0065] The invention adds a proper amount of organic acid activator and activity enhancer to the components to greatly enhance the activity of the flux. A small amount of wetting agent and surfactant is also added to the components, which improves the welding environment of the interface between the electrode plate and the bus bar, significantly reduces the surface tension gap between the interfaces, promotes the regular flow of the lead solution, and is beneficial to the connection between the lead solution and the base metal. The fusion, the weld formed by welding is full and the joint is firm. In addition, the above-mentioned activators, wetting ag...

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PUM

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Abstract

The invention discloses a formula of a water-based soldering flux for automatic welding of a lead-acid storage battery pole group. The water-based soldering flux is composed of the following components of, by mass, 33-50% of an organic acid activator, 20-35% of a high-boiling-point solvent, 3-5% of a wetting agent, 0.5-1% of a surfactant, 0.5-1.5% of a corrosion inhibitor, 3-5% of an activity enhancer and the balance deionized water. According to the formula, a proper amount of the organic acid activator and a proper amount of the active enhancer are added into the components, so that the activity of the soldering flux is greatly enhanced; a trace of the wetting agent and a trace of the surfactant are further added in the components, so that a connecting port welding environment between apole plate and a bus bar is improved, the surface tension difference between the connecting port is remarkably reduced, the regular flow of a lead solution is promoted, fusion of the lead solution anda base material is facilitated, a welding seam formed by welding is full, the joint is firm, and in addition, the formula is characterized in that no emission and no residue exist during actual use.

Description

technical field [0001] The invention relates to a soldering flux, in particular to a water-based soldering flux, in particular to a formulation of a water-based soldering flux for automatic welding of lead-acid battery electrode groups. Background technique [0002] The pole group is the core component of the lead-acid battery, which consists of a bus bar and a group of plates. The pole group is a lead alloy product. In the atmospheric environment, the surface of lead and lead alloy is easily oxidized by oxygen in the air to form lead oxide. The oxygen film formed is dense in structure, resulting in poor electron flow during the welding process, which is not conducive to welding operations. In order to improve the welding quality, flux must be used when welding lead and lead alloy products. The industry generally uses oily flux or phosphoric acid inorganic flux in the manufacture of Jiqun. Practice has proved that these two fluxes are effective and can fully meet the weldin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/362
CPCB23K35/3618B23K35/362
Inventor 徐进赵凤翔邵双喜
Owner HUBEI RUNYANG NEW ENERGY
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