A wear-resistant surfacing flux-cored welding wire

Abstract

The invention belongs to the technical field of welding materials, and particularly relates to a wear-resistant surfacing flux-cored wire. The flux-cored wire is prepared by coating flux core powder with a low-carbon cold-rolled steel strip; a flux core is prepared from components in percentage by mass as follows: 1.0%-1.8% of nano diamond, 2.0%-4.0% of nano aluminum oxide, 2.5%-5.0% of low-carbonferrochromium, 4.0%-6.0% of ferromolybdenum, 3.0%-6.0% of ferronickel, 2.0%-4.0% of ferroboron, 1.5%-3.0% of ferroniobium, 2.0%-5.0% of ferrosilicon, 5.0%-8.0% of ferromanganese, 5.0%-10.0% of feldspar, 2.0%-5.0% of cryolite, 4.0%-8.0% of titanium dioxide, 2.0%-5.0% of zirconite and the balance of reduced iron powder FHT100*25; the particle size of the nano diamond ranges from 30 nm to 80 nm; theparticle size of the nano aluminum oxide ranges from 40 nm to 100 nm; the mass of the flux core accounts for 20%-35% of the total mass of the flux-cored wire; and the diameter of the wire ranges from1.2 mm to 2.4 mm.

Description

technical field

[0001] The invention relates to the field of welding materials, in particular to a wear-resistant surfacing flux-cored welding wire.

[0002] technical background

[0003] Wear is one of the main causes of mechanical failure. With the development of modern industry, the requirements for the wear resistance of materials in the use of mechanical equipment and its parts are getting higher and higher, and its service life has become more and more affecting the production efficiency of mechanical equipment. more important factor. For example, vertical mill rollers and discs and squeeze rollers in cement plants, coal mill rollers and discs in thermal power plants, crusher hammers and drums, and shovel teeth of excavators cannot be used due to local wear and damage during use. , the loss is huge.

[0004] Surfacing welding technology is a commonly used surface modification and repair method, which is mainly used in cement, steel, electric power, mining and other in...

Examples

Embodiment 1

[0030] Wear-resistant surfacing welding flux-cored wire, the flux-cored wire is composed of low-carbon cold-rolled steel strip wrapped core powder.

[0031] First select a low-carbon cold-rolled steel strip with a width of 10mm and a thickness of 0.3mm, and press it into a U-shape through a forming machine; then fill the U-shaped groove with flux-core powder, which accounts for 20% of the mass of the flux-cored wire; Then close the opening of the U-shaped groove to form an O-shape, so that the core powder is wrapped in it, and the wire drawing machine is drawn one by one according to the conventional method, and the diameter is reduced to obtain a welding wire of Ф1.2mm, which is the wear-resistant surfacing flux of the present invention. cored wire.

[0032] The composition and dosage of the drug core are calculated by mass percentage: nano-diamond 1.0%, nano-alumina 2.0%, low-carbon ferrochrome 2.5%~5.0%, molybdenum-iron 4.0%, nickel-iron 3.0%, boron iron 2.0% , ferro-niobi...

Embodiment 2

[0034] Wear-resistant surfacing welding flux-cored wire, the flux-cored wire is composed of low-carbon cold-rolled steel strip wrapped core powder.

[0035] First select a low-carbon cold-rolled steel strip with a width of 13mm and a thickness of 0.5mm, and press it into a U-shape by a forming machine; then fill the U-shaped groove with flux-core powder, which accounts for 28% of the mass of the flux-cored wire; Then close the opening of the U-shaped groove to form an O-shape, so that the core powder is wrapped in it, and the wire drawing machine is drawn and reduced in diameter according to the conventional method to obtain a welding wire of Ф1.6mm, which is the wear-resistant surfacing flux of the present invention. cored wire.

[0036] The composition and dosage of the drug core are calculated by mass percentage: 1.4% nano-diamond, 3.0% nano-alumina, 3.8% low-carbon ferrochrome, 5.0% ferromolybdenum, 4.5% ferronickel, 3.0% ferro-boron, ferro-niobium 2.3%, ferrosilicon 3.5%...

Embodiment 3

[0038] Wear-resistant surfacing welding flux-cored wire, the flux-cored wire is composed of low-carbon cold-rolled steel strip wrapped core powder.

[0039]First select a low-carbon cold-rolled steel strip with a width of 16mm and a thickness of 0.8mm, and press it into a U-shape through a forming machine; then fill the U-shaped groove with flux-core powder, which accounts for 35% of the mass of the flux-cored wire; Then close the opening of the U-shaped groove to form an O-shape, so that the core powder is wrapped in it, and the wire drawing machine is drawn and reduced in diameter according to the conventional method to obtain a welding wire of Ф2.4mm, which is the wear-resistant surfacing flux of the present invention. cored wire.

[0040] The composition and dosage of the drug core are calculated by mass percentage: nano-diamond 1.8%, nano-alumina 4.0%, low-carbon ferrochrome 2.5%~5.0%, molybdenum-iron 6.0%, nickel-iron 6.0%, boron iron 4.0% , ferro-niobium 3.0%, ferrosil...

technical field

[0001] The invention relates to the field of welding materials, in particular to a wear-resistant surfacing flux-cored welding wire.

[0002] technical background

[0003] Wear is one of the main causes of mechanical failure. With the development of modern industry, the requirements for the wear resistance of materials in the use of mechanical equipment and its parts are getting higher and higher, and its service life has become more and more affecting the production efficiency of mechanical equipment. more important factor. For example, vertical mill rollers and discs and squeeze rollers in cement plants, coal mill rollers and discs in thermal power plants, crusher hammers and drums, and shovel teeth of excavators cannot be used due to local wear and damage during use. , the loss is huge.

[0004] Surfacing welding technology is a commonly used surface modification and repair method, which is mainly used in cement, steel, electric power, mining and other in...

Examples

Embodiment 1

[0030] Wear-resistant surfacing welding flux-cored wire, the flux-cored wire is composed of low-carbon cold-rolled steel strip wrapped core powder.

[0031] First select a low-carbon cold-rolled steel strip with a width of 10mm and a thickness of 0.3mm, and press it into a U-shape through a forming machine; then fill the U-shaped groove with flux-core powder, which accounts for 20% of the mass of the flux-cored wire; Then close the opening of the U-shaped groove to form an O-shape, so that the core powder is wrapped in it, and the wire drawing machine is drawn one by one according to the conventional method, and the diameter is reduced to obtain a welding wire of Ф1.2mm, which is the wear-resistant surfacing flux of the present invention. cored wire.

[0032] The composition and dosage of the drug core are calculated by mass percentage: nano-diamond 1.0%, nano-alumina 2.0%, low-carbon ferrochrome 2.5%~5.0%, molybdenum-iron 4.0%, nickel-iron 3.0%, boron iron 2.0% , ferro-niobi...

Embodiment 2

[0034] Wear-resistant surfacing welding flux-cored wire, the flux-cored wire is composed of low-carbon cold-rolled steel strip wrapped core powder.

[0035] First select a low-carbon cold-rolled steel strip with a width of 13mm and a thickness of 0.5mm, and press it into a U-shape by a forming machine; then fill the U-shaped groove with flux-core powder, which accounts for 28% of the mass of the flux-cored wire; Then close the opening of the U-shaped groove to form an O-shape, so that the core powder is wrapped in it, and the wire drawing machine is drawn and reduced in diameter according to the conventional method to obtain a welding wire of Ф1.6mm, which is the wear-resistant surfacing flux of the present invention. cored wire.

[0036] The composition and dosage of the drug core are calculated by mass percentage: 1.4% nano-diamond, 3.0% nano-alumina, 3.8% low-carbon ferrochrome, 5.0% ferromolybdenum, 4.5% ferronickel, 3.0% ferro-boron, ferro-niobium 2.3%, ferrosilicon 3.5%...

Embodiment 3

[0038] Wear-resistant surfacing welding flux-cored wire, the flux-cored wire is composed of low-carbon cold-rolled steel strip wrapped core powder.

[0039]First select a low-carbon cold-rolled steel strip with a width of 16mm and a thickness of 0.8mm, and press it into a U-shape through a forming machine; then fill the U-shaped groove with flux-core powder, which accounts for 35% of the mass of the flux-cored wire; Then close the opening of the U-shaped groove to form an O-shape, so that the core powder is wrapped in it, and the wire drawing machine is drawn and reduced in diameter according to the conventional method to obtain a welding wire of Ф2.4mm, which is the wear-resistant surfacing flux of the present invention. cored wire.

[0040] The composition and dosage of the drug core are calculated by mass percentage: nano-diamond 1.8%, nano-alumina 4.0%, low-carbon ferrochrome 2.5%~5.0%, molybdenum-iron 6.0%, nickel-iron 6.0%, boron iron 4.0% , ferro-niobium 3.0%, ferrosil...

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