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Flux-cored wire with excellent low-temperature impact toughness

A technology of low-temperature impact toughness and flux-cored wire, which is applied in welding media, manufacturing tools, welding equipment, etc., can solve the problems of reducing the low-temperature impact toughness of welded joints, and achieve the effects of desulfurization, diffusion suppression, and cold crack suppression

Inactive Publication Date: 2017-05-10
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, Ti in the rutile slag-based flux-cored wire will transition into the deposited metal during welding, reducing the low-temperature impact toughness of the welded joint, which has an extremely adverse effect on the welding of high-strength steel

Method used

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  • Flux-cored wire with excellent low-temperature impact toughness
  • Flux-cored wire with excellent low-temperature impact toughness

Examples

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Effect test

Embodiment 1

[0032] A flux-cored welding wire with excellent low-temperature impact toughness, which is characterized in that it includes a low-carbon steel sheath and a flux core filled in the low-carbon steel sheath, and the raw materials of the flux core include: 20% of roasted bauxite, calcium ferrite 6%, 1% rutile, 5% feldspar, 5% aluminum fluoride, 3% nickel fluoride, 3% magnesium alloy powder, 2% ferromanganese powder, 2% marble, 1% barium carbonate, and the balance is iron pink.

Embodiment 2

[0034] A flux-cored welding wire with excellent low-temperature impact toughness, comprising a low-carbon steel sheath and a flux core filled in the low-carbon steel sheath, the raw materials of the flux-core include: 10% roasted bauxite, 8% calcium ferrite, long 5.5% of stone, 6% of aluminum fluoride, 3.5% of nickel fluoride, 1.5% of magnesium alloy powder, 1% of ferromanganese powder, 2.5% of marble, 0.5% of barium carbonate, and the balance is iron powder; in roasted bauxite , Al 2 o 3 , SiO 2 and Fe 2 o 3 The weight percentage is 85%, Fe 2 o 3 The percentage by weight is 10%.

Embodiment 3

[0036] A flux-cored welding wire with excellent low-temperature impact toughness, including a low-carbon steel sheath and a flux core filled in the low-carbon steel sheath. The raw materials of the flux core include: 15% roasted bauxite, 6% calcium ferrite, rutile 3%, feldspar 6%, aluminum fluoride 7%, nickel fluoride 4%, magnesium alloy powder 1%, manganese iron powder 1.3%, marble 3%, barium carbonate 0.65%, the balance is iron powder; In bauxite, Al 2 o 3 , SiO 2 and Fe 2 o 3 The weight percentage is 80%, Fe 2 o 3 The weight percentage is 12%, and the roasted bauxite is roasted at 900° C. for 2 hours.

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Abstract

The invention discloses a flux-cored wire with excellent low-temperature impact toughness. The flux-cored wire comprises a low-carbon steel sheath and a flux core with which the low-carbon steel sheath is filled, wherein the flux core comprises the following components by weight percent: 10-20% of calcined bauxite, 3-8% of calcium ferrite, 0-5% of rutile, 5-6% of feldspar, 5-7% of aluminum fluoride, 3-4% of nickel fluoride, 1-3% of magnalium powder, 1-2% of ferromanganese powder, 2-3% of marble, 0.5-1% of barium carbonate and the balance of iron powder. As calcined bauxite replaces part of rutile, the low-temperature impact toughness of a weld joint is effectively improved, and meanwhile, the flux-cored wire has the advantages of easy deslagging and small splashing.

Description

technical field [0001] The invention relates to the technical field of flux cores, in particular to a flux-cored welding wire with excellent low-temperature impact toughness. Background technique [0002] Flux-cored welding wire is a high-efficiency and high-performance welding material, which has the advantages of good process performance, fast deposition speed and high production efficiency, and is widely used in various industrial manufacturing welding fields. At present, most flux-cored welding wires use rutile as the main slag forming material. Rutile slag-based flux-cored welding wire has the advantages of good molding, easy slag removal and small spatter, and can realize horizontal, upward, downward, vertical, etc. Position welding. However, Ti in the rutile slag-based flux-cored wire will transition into the deposited metal during welding, reducing the low-temperature impact toughness of the welded joint, which has an extremely adverse effect on the welding of high-...

Claims

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Application Information

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IPC IPC(8): B23K35/12B23K35/30
CPCB23K35/0266B23K35/3053
Inventor 卢齐元
Owner 天长市通联焊业有限公司
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