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All-position niobium -contained stainless steel flux-cored wire

A technology of flux-cored welding wire and stainless steel, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc. It can solve the problems such as difficulty in removing slag from niobium-containing stainless steel flux-cored welding wire, and achieve improved slag removal performance and all-position welding Excellent performance, excellent slag removal performance, small splash effect

Active Publication Date: 2011-07-20
HEBEI YICHEN INDAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Stainless steel flux-cored wire has the advantages of good welding process performance, beautiful weld shape, high welding efficiency, all-position welding and low overall cost, etc. good solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] Ni: 10%

[0031] NaF: 5%

[0032] Cr: 22%

[0033] al 2 o 3 : 6%

[0034] MgO: 8%

[0035] SiO 2 : 0.5%

[0036] TiFe alloy (Ti content 44%): 5%

[0037] TiO 2 : 26%

[0038] Mn: 6%

[0039] NbFe alloy (Nb content 78%): 5%

[0040] Fe: 6.5%

[0041] The welding wire has good all-position welding performance, stable arc combustion, small spatter, which is fine particle spatter, smooth and bright weld shape, and easy slag removal. The tensile strength is 580MPa and the elongation is 40%.

example 2

[0043] Ni: 9%

[0044] NaF: 4%

[0045] Cr: 20%

[0046] al 2 o 3 :1%

[0047] MgO: 2%

[0048] SiO 2 : 5%

[0049] TiFe alloy (Ti content 42%): 7%

[0050] TiO 2 : 36%

[0051] Mn: 4%

[0052] NbFe alloy (Nb content 78%): 3%

[0053] Fe: 9%

[0054] The welding wire has good all-position welding performance, stable arc combustion, small spatter, which is fine particle spatter, smooth and bright weld shape, and easy slag removal. The tensile strength is 570MPa and the elongation is 36%.

example 3

[0056] Ni: 11%

[0057] NaF: 2%

[0058] Cr: 25%

[0059] al 2 o 3 :2%

[0060] MgO: 6%

[0061] SiO 2 : 3%

[0062] TiFe alloy (Ti content 42%): 9%

[0063] TiO 2 :twenty two%

[0064] Mn: 7%

[0065] NbFe alloy (Nb content 72%): 7%

[0066] Fe: 6%

[0067] The welding wire has good all-position welding performance, stable arc combustion, small spatter, which is fine particle spatter, smooth and bright weld shape, and easy slag removal. The tensile strength is 600MPa and the elongation is 32%.

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Abstract

The invention belongs to the technical field of welding materials, which relates to an all-position niobium-contained stainless steel flux-cored wire. The flux-cored composition comprises the following components in percentage by weight: 2-10% of manganese, 8-15% of nickel, 20-35% of chromium, 2-9% of niobium-iron alloy in which the quantity of the niobium accounts for 70-80%, 20-45% of titanium dioxide, 2-6% of fluoride, 0.5-8% of magnesium oxide, 0.5-8% of silicon dioxide, 5-10% of titanium-iron alloy in which the percentage content of the titanium is 40-45%, 1-8% of Al2O3 and the balance iron powder. The flux-cored composition accounts for 16-30% of the total weight proportion of the flux-cored wire. The self-shielded flux-cored wire of the invention has excellent toughness and plasticity of weld metals, small splashing and good all-position welding performance, and obviously improves the slag removing performance and seam forming performance.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and relates to a flux-cored welding wire. Background technique [0002] Stainless steel flux-cored wire has the advantages of good welding process performance, beautiful weld shape, high welding efficiency, all-position welding and low overall cost, etc. Good solution. In order to obtain excellent slag removal and all-position welding performance, deoxidizing elements should be added appropriately to obtain ideal slag removal performance; adding an appropriate amount of rutile can improve all-position welding performance. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a niobium-containing stainless steel flux-cored welding wire that is easy to remove slag and can be used for all-position welding. [0004] Solution of the present invention is: [0005] A flux-cored welding wire for all-position nio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/32
Inventor 胡合斌
Owner HEBEI YICHEN INDAL GROUP
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