Tungsten-strengthened wear-resistant submerged-arc overlaying welding flux-cored wire

Abstract

The invention discloses a tungsten-strengthened wear-resistant submerged-arc overlaying welding flux-cored wire which comprises a low-carbon steel cored solder wire and flux-cored powder arranged in the cored solder wire, wherein the flux-cored powder is mainly characterized by comprising the following components in percentage by weight (%): 30-55% of high carbon ferrochrome, 3-15% of tungsten powder, 3-8% of deoxidizer and 25-55% of iron powder. The overlaying welding layer of the invention has the characteristics of uniform hardness distribution, high wear resistance, excellent welding technological properties and the like.

Description

technical field

[0001] The invention relates to a tungsten-strengthened wear-resistant submerged arc surfacing flux-cored welding wire, which belongs to the technical field of welding materials. Background technique

[0002] Flux-cored welding wire is a flux-cored welding wire made by wrapping alloying elements (powder core) in steel skin and drawing them into different diameters.

[0003] After the flux-cored wire is melted by welding, an alloy welding layer with special properties such as wear resistance, corrosion resistance and high temperature resistance is formed. Flux cored wire submerged arc welding plays an important role in repair and composite manufacturing, and is widely used in composite parts of mechanical structural parts such as high wear resistance of mechanical engineering structures.

[0004] At present, the wear-resistant flux-cored wires for surfacing repair generally contain alloying elements such as carbon, chromium, silicon, and manganese, and rarely...

Examples

specific Embodiment approach

[0028] The second specific implementation mode, as attached figure 1 shown.

[0029] A tungsten-enhanced submerged-arc surfacing flux-cored welding wire, comprising an H10 low-carbon steel hollow welding wire and a powder flux core arranged in the hollow welding wire, the proportion of the powder flux core being: the high-carbon ferrochrome 50%, 12% of the tungsten powder, 8% of the ferromanganese deoxidizer, and 30% of the iron powder. The filling rate is 45%. The average hardness of the surfacing layer of flux-cored wire is HRC63.

technical field

[0001] The invention relates to a tungsten-strengthened wear-resistant submerged arc surfacing flux-cored welding wire, which belongs to the technical field of welding materials. Background technique

[0002] Flux-cored welding wire is a flux-cored welding wire made by wrapping alloying elements (powder core) in steel skin and drawing them into different diameters.

[0003] After the flux-cored wire is melted by welding, an alloy welding layer with special properties such as wear resistance, corrosion resistance and high temperature resistance is formed. Flux cored wire submerged arc welding plays an important role in repair and composite manufacturing, and is widely used in composite parts of mechanical structural parts such as high wear resistance of mechanical engineering structures.

[0004] At present, the wear-resistant flux-cored wires for surfacing repair generally contain alloying elements such as carbon, chromium, silicon, and manganese, and rarely...

Examples

specific Embodiment approach

[0028] The second specific implementation mode, as attached figure 1 shown.

[0029] A tungsten-enhanced submerged-arc surfacing flux-cored welding wire, comprising an H10 low-carbon steel hollow welding wire and a powder flux core arranged in the hollow welding wire, the proportion of the powder flux core being: the high-carbon ferrochrome 50%, 12% of the tungsten powder, 8% of the ferromanganese deoxidizer, and 30% of the iron powder. The filling rate is 45%. The average hardness of the surfacing layer of flux-cored wire is HRC63.

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