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A heat-resistant and wear-resistant flux-cored welding wire

A flux-cored welding wire, heat-resistant technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problem of high price, achieve grain refinement, improve high-temperature tempering stability, and excellent heat resistance The effect of wear resistance

Active Publication Date: 2018-05-08
ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wear-resistant surfacing flux-cored wire can generally be used in working conditions below 550°C. When it exceeds 700°C, most of them need to use cobalt-based alloys, but their prices are too high

Method used

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  • A heat-resistant and wear-resistant flux-cored welding wire
  • A heat-resistant and wear-resistant flux-cored welding wire
  • A heat-resistant and wear-resistant flux-cored welding wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Heat-resistant and wear-resistant flux-cored welding wire, which is composed of low-carbon cold-rolled steel strip wrapped flux core powder.

[0024] First select a low-carbon cold-rolled steel strip with a width of 14mm and a thickness of 0.3mm, and press it into a U-shape by a forming machine; then fill the U-shaped groove with flux-core powder, which accounts for 36% of the mass of the flux-cored wire; Then the opening of the U-shaped groove is closed 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 heat-resistant and wear-resistant chemical of the present invention. cored wire.

[0025] The weight percent composition of the drug core powder is as follows: 0.2% of nanoscale graphene, 45% of metallic chromium, 8% of electrode graphite, 2% of marble, 1.5% of chromium carbide, 1.6% of electrolytic manganese meta...

Embodiment 2

[0027] Heat-resistant and wear-resistant flux-cored welding wire, which is composed of low-carbon cold-rolled steel strip wrapped flux core powder.

[0028] First select a low-carbon cold-rolled steel strip with a width of 14mm 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 46% 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 then drawn and reduced in diameter by a wire drawing machine to obtain a welding wire of Ф2.8mm, which is the heat-resistant and wear-resistant flux-cored welding wire of the present invention.

[0029] The weight percent composition of the drug core powder is as follows: 1.0% of nano-graphene, 42% of metallic chromium, 7% of electrode graphite, 4% of marble, 1% of chromium carbide, 2% of electrolytic manganese, 6% of ferrosilicon, and 6% of molybdenum ,...

Embodiment 3

[0031] Heat-resistant and wear-resistant flux-cored welding wire, which is composed of low-carbon cold-rolled steel strip wrapped flux core powder.

[0032] First select a low-carbon cold-rolled steel strip with a width of 14mm and a thickness of 0.25mm, and press it into a U-shape by a forming machine; then fill the U-shaped groove with flux-core powder, which accounts for 40% 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 then drawn and reduced in diameter by a wire drawing machine to obtain a welding wire of Ф2.0 mm, which is the heat-resistant and wear-resistant flux-cored welding wire of the present invention.

[0033] The weight percent composition of the drug core powder is as follows: 0.8% of nanoscale graphene, 40% of metal chromium powder, 5% of electrode graphite, 3% of marble, 2% of chromium carbide, 3% of electrolytic manganese powder, and 4% of ferrosilicon powder ...

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Abstract

The invention belongs to the technical field of metal surfacing materials and particularly relates to a heat-resisting and wear-resisting flux-cored wire. The heat-resisting and wear-resisting flux-cored wire is formed by wrapping a low-carbon cold-rolled steel strip on flux core powder. The flux core powder comprises, by weight, 0.25-1.0% of graphene, 40-45% of chromium metal, 5-9% of electrode graphite, 2-4% of marble, 1-3% of chromium carbide, 1-4% of electrolytic manganese metal, 3-6% of silicon iron, 4-6% of molybdenum, 6-10% of nickel, 2-4% of ferro-boron, 0.5-3% of niobium, 0.5-3.0% of tungsten, 0.5-1% of rare earth, and the balance FHY100.25 reduced iron powder. According to the heat-resisting and wear-resisting flux-cored wire, weld metal structures are refined and homogenized by adding components such as graphene, rare earth elements and chromium carbide into the flux core powder and optimizing the reasonable range of components, and the high-temperature tempering stability of surfacing metal is improved.

Description

technical field [0001] The invention belongs to the technical field of metal surfacing materials, in particular to a heat-resistant and wear-resistant flux-cored welding wire. Background technique [0002] Among the main failure modes of mechanical parts, the proportion of wear failure under high temperature and corrosion accounts for 60%-80%. Therefore, the surface modification of materials, the improvement of wear resistance of materials under high temperature and corrosion, or the failure of It is of great practical significance to repair materials, prolong their service life and improve economic benefits. [0003] Surfacing welding technology is a commonly used surface modification and repair method, which is mainly used in cement, steel, electric power, mining and other industries. As a new generation of welding consumables, flux-cored wire has the advantages of high deposition rate, fast deposition speed, beautiful shape, easy adjustment of composition, and strong wel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/368B23K35/30B23K35/40
CPCB23K35/0266B23K35/3086B23K35/3601B23K35/368B23K35/406
Inventor 黄智泉潘健魏建军杨威张永生李军伟尼军杰张海燕
Owner ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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