Flux-cored wire for aluminum and aluminum welding

Abstract

The invention discloses a flux-cored wire for aluminum and aluminum welding. The flux-cored wire material comprises the following chemical components in percentage by weight: 0.01 to 20 percent of Si, 0 to 30 percent of Zn, 0 to 5 percent of Ti, 0 to 0.5 percent of Ce, 0.001 to 0.5 percent of P, less than 0.1 percent of other inevitable impurity and the balance of aluminum. The flux-cored wire has the characteristics of good drawing performance, high flowability, high weld strength, high postwelding gas tightness, and no corrosion, and can be widely applied to aluminum and aluminum welding of heat exchangers or radiators in air conditioning, refrigerator, automobile and refrigeration industry.

Description

technical field

[0001] The invention relates to a welding wire material, in particular to a flux-cored welding wire used for aluminum-aluminum welding. Background technique

[0002] The application of aluminum in modern industrial production and social activities is becoming more and more extensive, because aluminum has many advantages, such as small specific gravity, high thermal conductivity, low resistance, high creep performance, and is convenient for machining. Now it is used in home appliances, aerospace, It is widely used in motor vehicles, ships, communications, daily necessities, etc. The weight reduction also improves the function of the product. However, the application of aluminum in the above fields widely depends on the development of welding technology. The welding of copper and copper is easy to realize, and the oxide film of copper is also relatively easy to remove. The welding of composite pipes often encounters aluminum-aluminum welding. In recent years, ...

Examples

Embodiment 1

[0020] A flux-cored welding wire for aluminum-aluminum welding, the chemical composition and weight percentage of the welding wire material are: Si0.01%, Zn 10%, Ti 0.1%, Ce 0.5%, P 0.5%, and other unavoidable impurities are less than 0.1%, The balance is aluminum. Flux-cored welding wire for aluminum-aluminum welding obtained by the above composition ratio, combined with commercially available KF-AlF 3 Flux and CsF-AlF 3 Flux, the finished flux-cored wire is produced through the forming machine, wire drawing, and wire winding procedures.

Embodiment 2

[0022] A flux-cored wire for aluminum-aluminum welding, the chemical composition and weight percentage of the wire material are: Si 7%, Zn 30%, Ti 4%, Ce 0.001%, P 0.1%, other unavoidable impurities less than 0.1%, and the rest It is aluminum. Flux-cored welding wire for aluminum-aluminum welding obtained by the above composition ratio, combined with commercially available KF-AlF 3 Flux and CsF-AlF 3 Flux, the finished flux-cored wire is produced through the forming machine, wire drawing, and wire winding procedures.

Embodiment 3

[0024] A flux-cored welding wire for aluminum-aluminum welding, the chemical composition and weight percentage of the welding wire material are: Si20%, Zn 15%, Ti 5%, Ce 0.01%, P 0.002%, other unavoidable impurities less than 0.1%, and the rest It is aluminum. Flux-cored welding wire for aluminum-aluminum welding obtained by the above composition ratio, combined with commercially available KF-AlF 3 Flux and CsF-AlF 3 Flux, the finished flux-cored wire is produced through the forming machine, wire drawing, and wire winding procedures.

technical field

[0001] The invention relates to a welding wire material, in particular to a flux-cored welding wire used for aluminum-aluminum welding. Background technique

[0002] The application of aluminum in modern industrial production and social activities is becoming more and more extensive, because aluminum has many advantages, such as small specific gravity, high thermal conductivity, low resistance, high creep performance, and is convenient for machining. Now it is used in home appliances, aerospace, It is widely used in motor vehicles, ships, communications, daily necessities, etc. The weight reduction also improves the function of the product. However, the application of aluminum in the above fields widely depends on the development of welding technology. The welding of copper and copper is easy to realize, and the oxide film of copper is also relatively easy to remove. The welding of composite pipes often encounters aluminum-aluminum welding. In recent years, ...

Examples

Embodiment 1

[0020] A flux-cored welding wire for aluminum-aluminum welding, the chemical composition and weight percentage of the welding wire material are: Si0.01%, Zn 10%, Ti 0.1%, Ce 0.5%, P 0.5%, and other unavoidable impurities are less than 0.1%, The balance is aluminum. Flux-cored welding wire for aluminum-aluminum welding obtained by the above composition ratio, combined with commercially available KF-AlF 3 Flux and CsF-AlF 3 Flux, the finished flux-cored wire is produced through the forming machine, wire drawing, and wire winding procedures.

Embodiment 2

[0022] A flux-cored wire for aluminum-aluminum welding, the chemical composition and weight percentage of the wire material are: Si 7%, Zn 30%, Ti 4%, Ce 0.001%, P 0.1%, other unavoidable impurities less than 0.1%, and the rest It is aluminum. Flux-cored welding wire for aluminum-aluminum welding obtained by the above composition ratio, combined with commercially available KF-AlF 3 Flux and CsF-AlF 3 Flux, the finished flux-cored wire is produced through the forming machine, wire drawing, and wire winding procedures.

Embodiment 3

[0024] A flux-cored welding wire for aluminum-aluminum welding, the chemical composition and weight percentage of the welding wire material are: Si20%, Zn 15%, Ti 5%, Ce 0.01%, P 0.002%, other unavoidable impurities less than 0.1%, and the rest It is aluminum. Flux-cored welding wire for aluminum-aluminum welding obtained by the above composition ratio, combined with commercially available KF-AlF 3 Flux and CsF-AlF 3 Flux, the finished flux-cored wire is produced through the forming machine, wire drawing, and wire winding procedures.

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