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Novel gas-shielded flux-cored wire for stainless steel welding

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 problems such as difficulty in ensuring low-temperature toughness of welding joints, high oxygen content of welding metal, and formation of cracks, etc., and achieve reduction The effect of quantity, saving energy and improving production efficiency

Inactive Publication Date: 2019-11-05
江苏大西洋焊接材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional flux-cored wire for welding has a high oxygen content in the resulting weld metal, so it is difficult to ensure the low-temperature toughness of the welded joint when using it for gas-shielded arc welding
And because of the different metal compositions involved, welds formed between two metals face significant margins, often resulting in the formation of cracks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The gas-shielded flux-cored welding wire for welding new stainless steel contains, in the total mass of the welding wire,

[0024] Cr: 1%

[0025] C: 0.02%

[0026] Mn: 1%

[0027] Ni: 0.1%

[0028] S: 1%

[0029] Si: 5%

[0030] Mo: 5%

[0031] Fe: 50.68%

[0032] Resin 30%

[0033] Cu: 2%

[0034] Nb: 0.1%

[0035] P: 0.1%

[0036] TiO 2 : 5%

Embodiment 2

[0038] The gas-shielded flux-cored welding wire for welding new stainless steel contains, in the total mass of the welding wire,

[0039] Cr: 3%

[0040] C: 1%

[0041] Mn: 0.5%

[0042] Ni: 0.5%

[0043] Si: 2%

[0044] Mo: 4%

[0045] Ti : 1%

[0046] Fe: 72.5%

[0047] Resin 10%

[0048] Cu: 5%

[0049] Nb: 0.3%

[0050] P: 0.2%

Embodiment 3

[0052] A new type of gas-shielded flux-cored wire for stainless steel welding, consisting of the following components

[0053] Cr: 2%

[0054] C: 0.5%

[0055] Mn: 0.8%

[0056] Ni: 0.2%

[0057] Si: 0.1%

[0058] Mo: 1%

[0059] Fe: 89.7%

[0060] Resin 5%

[0061] Nb: 0.5%

[0062] P: 0.2%

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PUM

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Abstract

The invention provides a novel gas-shielded flux-cored wire for stainless steel welding. The flux-cored wire comprises a specified amount of Cr, C, Mn, Ni, S, Si, Mo, Ti, Fe, Cu, Nb, P, TiO2 and resinin the total mass of the welding wire, the number of welding joints is effectively reduced, the welding joint quality is improved, the production efficiency is also improved, and energy sources are saved. The resin is added into the components, during welding, a resin matrix is subjected to combustion decomposition, the center component of the welding wire can be uniformly transited between two welding pieces, and the situation that the welding wire is broken due to different thermal expansion coefficients cannot occur.

Description

technical field [0001] The invention belongs to the field of welding, and in particular relates to a novel gas-shielded flux-cored welding wire for stainless steel welding. Background technique [0002] Flux-cored wire is also called powder-cored wire and tubular wire. It is divided into two categories: gas-filled and non-gas-filled. The surface of the flux-cored wire is the same as that of the solid wire, and is made of materials such as low-carbon steel or low-alloy steel with good plasticity. The manufacturing method is to first roll the steel strip into a U-shaped section shape, then fill the solder powder prepared according to the dosage into the U-shaped steel strip, roll it tightly with a rolling mill, and finally make it into different specifications by drawing. cored wire. Conventional flux-cored wires for welding have a high oxygen content in the resulting weld metal, so it is difficult to ensure the low-temperature toughness of the welded joint when gas-shielded...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/12
CPCB23K35/0266B23K35/3053
Inventor 任军
Owner 江苏大西洋焊接材料有限责任公司