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Steel no-clean welding flux and preparation method thereof

A technology of welding aids and solvents, which is applied in the field of steel no-clean welding aids and its preparation, can solve the problems of poor mechanical and electrical properties, poor appearance, high corrosion, etc. Good weldability and high welding strength

Inactive Publication Date: 2012-11-28
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a no-clean welding aid for steel with the advantages of environmental protection, no-cleaning, corrosion resistance, and good soldering effect, so as to solve the traditional rosin-based flux, which has many residues after welding and corrosion. High corrosion resistance, poor appearance, must be cleaned with freon or chlorinated hydrocarbons, corrosion after welding, and adverse effects on mechanical and electrical properties

Method used

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  • Steel no-clean welding flux and preparation method thereof
  • Steel no-clean welding flux and preparation method thereof
  • Steel no-clean welding flux and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of no-clean welding aid for steel, it comprises the following components by weight percentage:

[0044] Silicone modified acrylic resin 30%,

[0045] Mixed alcohol solvent 50%,

[0046] Active blend ingredients 15%,

[0047] Hydroquinone 5%.

[0048] The preparation method is as follows: first mix the liquid components in the formula evenly, then add the solid components and stir evenly to obtain the product.

[0049] The effect of the embodiment: the no-cleaning flux is coated on the steel plate and the solder, and the TIG welding process is adopted, the welding current is 130A, the welding voltage is 15V, and the welding speed is 126mm / min. After welding, there is no residue on the steel plate, and there is a colorless transparent solid, forming a thin film, which shows that it has a protective effect. In addition, it can be seen that the expansion area is larger and the solder joints are more complete. Expansion rate 83.6.

Embodiment 2

[0051] A kind of no-clean welding aid for steel, it comprises the following components by weight percentage:

[0052] Silicone modified acrylic resin 10%,

[0053] Mixed alcohol solvent 80%,

[0054] Active blend ingredients 5%,

[0055] Hydroquinone 5%.

[0056] The preparation method is as follows: first mix the liquid components in the formula evenly, then add the solid components and stir evenly to obtain the product.

[0057] The effect of the embodiment: the no-cleaning flux is coated on the steel plate and the solder, and the TIG welding process is adopted, the welding current is 130A, the welding voltage is 15V, and the welding speed is 126mm / min. After welding, there is no residue on the steel plate, and there is a colorless transparent solid, forming a thin film, which shows that it has a protective effect. Expansion rate 72.6.

Embodiment 3

[0059] A kind of no-clean welding aid for steel, it comprises the following components by weight percentage:

[0060] Silicone modified acrylic resin 35%,

[0061] Mixed alcohol solvent 30%,

[0062] Active blend ingredients 20%,

[0063] Hydroquinone 15%.

[0064] The preparation method is as follows: first mix the liquid components in the formula evenly, then add the solid components and stir evenly to obtain the product.

[0065] The effect of the embodiment: coating the no-cleaning flux on the steel plate and the solder, adopting the TIG welding process, the welding current is 130A, the welding voltage is 15V, and the welding speed is 126mm / min. After welding, there is no residue on the steel plate, and there is a colorless transparent solid, forming a thin film, which shows that it has a protective effect. In addition, it can be seen that the expansion area is larger and the solder joints are more complete. Expansion rate 87.3.

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Abstract

The invention discloses a steel no-clean welding flux. The steel no-clean welding flux is characterized by comprising the following components in weight percent: 10-35% of organic silicon modified acrylic resin, 15-80% of mixed alcohol solvent, 5-30% of active mixed component and 1-20% of benzenediol. The invention further discloses a preparation method for the steel no-clean welding flux. The steel no-clean welding flux is an environment-friendly novel welding flux which is no-clean, good in weld assistant property, large in expansion rate, non-corrosive and residue-free.

Description

technical field [0001] The invention belongs to the field of welding, and in particular relates to a no-cleaning welding aid for steel and a preparation method thereof. Background technique [0002] As people attach great importance to the environment, the cleaning solvents of traditional halogen-containing fluxes have exerted tremendous pressure on the environment and damaged the environment, especially the damage to the atmosphere. According to the Tokyo Protocol, such substances are in Therefore, the development of new environmentally friendly fluxes has become a research hotspot. At present, although some environmentally friendly welding auxiliaries have come out one after another to solve some environmental protection problems, however, a new problem arises: it is difficult to clean the steel parts of some high-precision instruments after welding, which brings great harm to the site operation and construction. Inconvenient, so the development of no-clean flux flux is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/362
Inventor 高延敏陆银
Owner JIANGSU UNIV OF SCI & TECH
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