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A gas-shielded flux-cored welding wire used in conjunction with a ceramic liner

A technology of flux-cored welding wire and ceramic liner, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc. It can solve the problems of increasing crack tendency, welding seam plasticity, and toughness decline, etc., and achieves grain refinement , Reduce oxide inclusions, improve plasticity

Active Publication Date: 2016-07-13
TIANJIN YONGCHANG WELDING WIRES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reduce the plasticity and toughness of the weld, and increase the tendency of cracks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A gas-shielded flux-cored welding wire used in conjunction with a ceramic liner, including SPCC-SD cold-rolled low-carbon steel strip and a welding wire flux core, the welding wire flux core accounts for 10% of the total mass of the welding wire, and the welding wire flux core contains the composition The weight percentage of composition is: TiO 2 : 45%, SiO 2 : 8%, Al 2 o 3 : 3%, metal manganese: 19%, ferro-silicon alloy: 5%, titanium-iron alloy: 2%, magnesium-aluminum alloy: 4%, and the balance is iron powder. The model of the ferrosilicon alloy is FeSi75, with a silicon content of 74% to 80%; the model of the ferrosilicon alloy is FeTi30, with a titanium content of 25% to 35%; the magnesium content in the magnesium aluminum alloy is 50% , The aluminum content is 50%.

[0017] Welding wire deposited metal composition detection, its weight percentage is C: 0.042%, Mn: 1.44%, silicon 0.49%, S: 0.006%, P: 0.008%, and the balance is Fe.

[0018] The gas-shielded flux...

Embodiment 2

[0020] A gas-shielded flux-cored welding wire used in conjunction with a ceramic liner, including SPCC-SD cold-rolled low-carbon steel strip and a welding wire flux core, the welding wire flux core accounts for 15% of the total mass of the welding wire, and the welding wire flux core contains the composition The weight percentage of composition is: TiO 2 : 40%, SiO 2 : 9%, Al 2 o 3 : 5%, metal manganese: 20%, ferro-silicon alloy: 2%, titanium-iron alloy: 0.5%, magnesium-aluminum alloy: 2%, and the balance is iron powder. The model of the ferrosilicon alloy is FeSi75, with a silicon content of 74% to 80%; the model of the ferrosilicon alloy is FeTi30, with a titanium content of 25% to 35%; the magnesium content in the magnesium aluminum alloy is 50% , The aluminum content is 50%.

[0021] Welding wire deposited metal composition detection, its weight percentage is C: 0.039%, Mn: 1.48%, silicon 0.35%, S: 0.006%, P: 0.009%, and the balance is Fe.

[0022] The gas-shielded fl...

Embodiment 3

[0024] A gas-shielded flux-cored welding wire used in conjunction with a ceramic liner, including SPCC-SD cold-rolled low-carbon steel strip and a welding wire flux core, the welding wire flux core accounts for 20% of the total mass of the welding wire, and the welding wire flux core contains the composition The weight percentage of composition is: TiO 2 : 50%, SiO 2 : 6%, Al 2 o 3 : 1%, manganese metal: 15%, ferro-silicon alloy: 5%, ferro-titanium alloy: 2.5%, magnesium-aluminum alloy: 5%, and the balance is iron powder. The model of the ferrosilicon alloy is FeSi75, with a silicon content of 74% to 80%; the model of the ferrosilicon alloy is FeTi30, with a titanium content of 25% to 35%; the magnesium content in the magnesium aluminum alloy is 50% , The aluminum content is 50%.

[0025] Welding wire deposited metal composition detection, its weight percentage is C: 0.045%, Mn: 1.38%, silicon 0.47%, S: 0.007%, P: 0.009%, and the balance is Fe.

[0026] The gas-shielded f...

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PUM

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Abstract

The invention discloses a gas shielded flux-cored wire matched with a ceramic backing for use. The flux-cored wire comprises a SPCC-SD cold-rolled low-carbon steel strip and a welding wire core, wherein the welding wire core comprises, by weight, 40%-50% of TiO2, 5%-10% of SiO2, 1%-5% of Al2O3 and the balance alloyed powder. The alloyed powder comprises, by percentage accounted in the total weight of the flux-cored wire, 10%-20% of manganese metal, 1%-5% of a ferrosilicon, 0.5%-2.5% of a ferrotitanium, 1%-5% of a magnalium and the balance iron powder. The flux-cored wire is mainly suitable for welding of the ceramic backing. According to the flux-core wire, the content of Mn and Si is increased, the deoxidizing capacity of the welding wire is improved, oxide inclusion in weld metal is reduced, the ferrotitanium is added simultaneously to refine grains, and plasticity and toughness of the welding wire are improved.

Description

technical field [0001] The invention belongs to the technical field of welding material preparation, and in particular relates to a gas-shielded flux-cored welding wire used in conjunction with a ceramic liner. Background technique [0002] Ceramic backing is a widely used backing material for single-sided welding and double-sided forming. Shipyards use a large number of ceramic backings and flux-cored welding wires for welding in ship plate welding. [0003] The ceramic liner is used in conjunction with the flux-cored welding wire. The back does not need root cleaning and grinding, and the weld shape is beautiful. The problem of poor toughness; flux-cored wire welding can observe the weld fusion in real time to avoid welding defects; at the same time, the deposition speed is fast, the production efficiency is high, the air slag is combined to protect, the process performance is good, the spatter is less, and the weld shape is beautiful. It also saves materials, electricity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/368
Inventor 杨建东张健
Owner TIANJIN YONGCHANG WELDING WIRES