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Low-chromium low-carbon hardfacing flux-cored wire

A technology of flux-cored welding wire and flux, applied in the field of wear resistance, can solve the problems of low toughness, poor resistance to welding cracks, increase production cost, etc., and achieve the effects of improving wear resistance, reducing wear amount, and increasing hardness

Inactive Publication Date: 2017-03-22
天长市通联焊业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high content of carbon and chromium, such welding materials not only increase the production cost, but also often have poor resistance to welding cracks and low toughness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A low-chromium and low-carbon wear-resistant surfacing flux-cored welding wire, including a low-carbon steel sheath and a flux core filled in the low-carbon steel sheath, the flux core components include: 17% rutile, 5% wollastonite, 3% cryolite, 8% low-carbon ferrochrome, 2% sodium alginate, 3.5% muscovite, 25% alloying agent, and the balance is iron powder; the weight percentage of alloying agent components includes: Mn 35%, Fe35%, Ca 15%, Mg 8%, Mo 2.5%, W 2.5%, Nb 2%.

Embodiment 2

[0027] A low-chromium and low-carbon wear-resistant surfacing flux-cored welding wire, including a low-carbon steel sheath and a flux core filled in the low-carbon steel sheath, the flux core components include: 15% rutile, 7% wollastonite, 2% cryolite, 10% low-carbon ferrochrome, 1% sodium alginate, 5% muscovite, 15% alloying agent, and the balance is iron powder; the weight percentage of alloying agent components includes: Mn 60%, Fe15%, Ca 5%, Mg 10%, Mo 2.5%, W 2.5%, Nb 5%.

Embodiment 3

[0029] A low-chromium and low-carbon wear-resistant surfacing flux-cored welding wire, including a low-carbon steel sheath and a flux core filled in the low-carbon steel sheath, the flux core components include 20% rutile, 3% wollastonite, 4% cryolite, 5% low-carbon ferrochrome, 3% sodium alginate, 2% muscovite, 35% alloying agent, and the balance is iron powder; the weight percentage of alloying agent components includes: Mn 45%, Fe27%, Ca 9%, Mg 8%, Mo 2.3%, W 2.7%, Nb 5%.

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Abstract

The invention discloses a low-chromium low-carbon hardfacing flux-cored wire which comprises a low-carbon steel skin and a flux core with which the low-carbon steel skin is filled. The flux core is prepared from, by weight, 15-20% of rutile, 3-7% of wollastonite, 2-4% of cryolite, 5-10% of low-carbon ferrochromium, 1-3% of sodium alga acid, 2-5% of white mica, 15-35% of alloying agent and the balance iron powder. The alloying agent is prepared from, by weight, 35-60% of Mn, 15-35% of Fe, 5-20% of Ca, 3-10% of Mg, 1-2.5% of Mo, 1-3% of W and 2-5% of Nb. According to the alloying agent prepared from the various kinds of alloy, the component ratio is reasonably set, the chromium content is lowered, meanwhile, high wear resistance and welding performance are ensured, the wear capacity is greatly lowered, the production cost is reduced, and practical production and using requirements are met.

Description

technical field [0001] The invention relates to the field of wear-resistant technology, in particular to a low-chromium wear-resistant surfacing flux-cored welding wire. Background technique [0002] It is common for the entire machine to be rendered unusable prematurely due to the wear and tear of the machine parts, and the protection of materials is becoming more and more important. Surfacing welding, as an economical and rapid process method for surface modification of materials, is more and more widely used in the manufacture and repair of parts in various industrial sectors. In order to play the role of the surfacing layer most effectively, it is hoped that the surfacing welding method adopted has a small dilution of the base metal, a high deposition speed and excellent performance of the surfacing layer, that is, high-quality, high-efficiency, low-dilution rate surfacing welding technology. The currently used wear-resistant surfacing welding wire is mainly high-chrom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/368
CPCB23K35/0266B23K35/3608B23K35/368
Inventor 卢齐元
Owner 天长市通联焊业有限公司
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