A high-toughness titanium-type flux-cored welding wire for weathering steel

A technology of titanium-type flux-cored and flux-cored wire, applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve the adverse effects of impact toughness, titanium-type flux-cored wire cannot meet the requirements, titanium-type flux-cored Solve the impact toughness of welding wire and other issues, and achieve the effect of excellent low temperature impact toughness

Active Publication Date: 2021-10-15
TIANJIN YONGCHANG WELDING WIRES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the current national standard, there is only 55 kg weather-resistant steel flux-cored wire standard, which has requirements for the content range of various alloy components, including alloy components that have an adverse effect on impact toughness, so the impact toughness of this type of titanium-type flux-cored wire is generally restricted. influences
[0003] However, some weather-resistant steel bridges in severe cold regions require welding consumables to have excellent low-temperature impact toughness and weather resistance. Flux cored wire does not meet the requirements

Method used

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  • A high-toughness titanium-type flux-cored welding wire for weathering steel
  • A high-toughness titanium-type flux-cored welding wire for weathering steel

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Experimental program
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Effect test

Embodiment 1

[0034] A high-toughness titanium-type flux-cored welding wire for weathering steel, including a flux core and a sheath; the flux core accounts for 12.5% ​​of the total mass of the welding wire;

[0035] The drug core includes the following components in parts by weight: 480 parts of rutile, 30 parts of sodium fluoride, 12 parts of rare earth fluoride, 46 parts of silicon potassium titanate, 165 parts of silicon manganese alloy, 14 parts of medium carbon ferromanganese, metal 45 parts of manganese, 54 parts of magnesium powder, 80 parts of nickel powder, 20 parts of copper powder, 28 parts of ferro-titanium, 4 parts of ferro-boron, 90 parts of iron powder.

[0036] Experimental results:

[0037] The deposited metal of the flux-cored wire satisfies that Cr accounts for 0.03% of the total mass of the deposited metal. Flux cored wire deposited metal tensile strength 590MPa, yield strength 500MPa, elongation 25.0%, KV 2 (-60°C) 91J.

[0038] Corrosion resistance index I: 6.90. ...

Embodiment 2

[0040] A high-toughness titanium-type flux-cored welding wire for weathering steel, including a flux core and a sheath; the flux core accounts for 13.8% of the total mass of the welding wire;

[0041] The drug core includes the following components in parts by weight: 420 parts of rutile, 27 parts of sodium fluoride, 6 parts of rare earth fluoride, 40 parts of silicon potassium titanate, 150 parts of silicon manganese alloy, 12 parts of medium carbon ferromanganese, metal 38 parts of manganese, 45 parts of magnesium powder, 63 parts of nickel powder, 16 parts of copper powder, 24 parts of ferro-titanium, 3 parts of ferro-boron, 185 parts of iron powder.

[0042] Experimental results:

[0043] The deposited metal of the flux-cored wire satisfies that Cr accounts for 0.02% of the total mass of the deposited metal. Flux cored wire deposited metal tensile strength 581MPa, yield strength 492MPa, elongation 27.5%, KV 2 (-60°C) 107J.

[0044] Corrosion resistance index I: 6.75.

Embodiment 3

[0046] A high-toughness titanium-type flux-cored welding wire for weathering steel, including a flux core and a sheath; the flux core accounts for 15.0% of the total mass of the welding wire;

[0047] The drug core includes the following components in parts by weight: 370 parts of rutile, 24 parts of sodium fluoride, 4 parts of rare earth fluoride, 35 parts of silicon potassium titanate, 132 parts of silicon manganese alloy, 10 parts of medium carbon ferromanganese, metal 30 parts of manganese, 40 parts of magnesium powder, 58 parts of nickel powder, 15 parts of copper powder, 20 parts of ferro-titanium, 2 parts of ferro-boron, 250 parts of iron powder.

[0048] Experimental results:

[0049]The deposited metal of the flux-cored wire satisfies that Cr accounts for 0.02% of the total mass of the deposited metal. Flux-cored welding wire deposited metal tensile strength 572MPa, yield strength 490MPa, elongation 27.0%, KV 2 (-60°C) 112J.

[0050] Corrosion resistance index I: 6...

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Abstract

The invention provides a high-toughness titanium-type flux-cored welding wire for weather-resistant steel, which includes a flux core and a sheath, and the flux core includes the following components in parts by weight: 300-500 parts of rutile, 15-35 parts of sodium fluoride, 2‑15 parts of rare earth fluoride, 25‑50 parts of silicon potassium titanate, 100‑180 parts of silicon manganese alloy, 5‑16 parts of medium carbon ferromanganese, 20‑50 parts of manganese metal, 25‑60 parts of magnesium powder, nickel powder 40-100 parts, copper powder 10-30 parts, ferro-titanium 10-30 parts, ferro-boron 1-5 parts, iron powder 80-400 parts; flux cored wire deposited metal meets Cr<0.10%. The high-toughness titanium-type flux-cored welding wire for weather-resistant steel described in the present invention improves low-temperature impact toughness on the basis of meeting the weather-resistant performance requirements, and can be widely used in weather-resistant steel projects requiring -60°C impact toughness.

Description

technical field [0001] The invention belongs to the field of welding wire production, in particular to a high-toughness titanium-type flux-cored welding wire for weathering steel. Background technique [0002] In the current national standard, there is only 55 kg weather-resistant steel flux-cored wire standard, which has requirements for the content range of various alloy components, including alloy components that have an adverse effect on impact toughness, so the impact toughness of this type of titanium-type flux-cored wire is generally restricted. influences. [0003] However, some weather-resistant steel bridges in severe cold regions require welding consumables to have excellent low-temperature impact toughness and weather resistance. Flux-cored wire does not meet the requirements. [0004] Therefore, it is of great practical significance to develop a high-toughness titanium-type flux-cored welding wire for weathering steel. Contents of the invention [0005] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/22B23K35/24B23K35/36
CPCB23K35/22B23K35/24B23K35/36B23K35/3601
Inventor 侯云昌李华军徐向军杨咏梅赵娜
Owner TIANJIN YONGCHANG WELDING WIRES
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