Carbon steel cored solder wire for gas-shielded arc welding

A technology of gas shielded welding and flux-cored wire, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problem of unstable low-temperature impact toughness of the weld, and achieve good weld formation and good arc Stability, the effect of ensuring process performance

Inactive Publication Date: 2006-05-24
WUHAN TEMO WELDING CONSUMABLES CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the low-temperature impact toughness of the weld in this technical scheme is unstable, and the compr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Below in conjunction with specific embodiment the present invention is described in further detail:

[0022] The steel sheath of the flux-cored wire is made of low-carbon steel, and its chemical composition is shown in Table 1.

[0023] C

Si

mn

S

P

0.04

0.04

0.3

0.012

0.015

[0024] The chemical composition and raw material composition of the drug core powder are shown in Table 2.

[0025] Core composition

make up

Content (accounting for welding wire%)

TiO 2

Rutile Titanium dioxide Reduced ilmenite Ferro-titanium

4-6.5

Si

Ferrosilicon Ferrosilicon Alloy

0.3-0.8

mn

Ferromanganese Silicon-manganese alloy Manganese metal

1.5-3.1

SiO 2

Quartz Potassium, Albite Zircon Sand Zircon

0.1-0.8

ZrO 2

Zircon Sand Zircon

0.1-0.5

Fe

Iron powder Silicon-manganese alloy Ferromanganese Reduced ilmenit...

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PUM

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Abstract

The present invention relates to a carbon steel flux-cored welding wire for gas shielded are welding. Its flux composition contains (by wt%) TiO2 4-6.5, Si 0.3-0.8, Mn 1.5-3.1, SiO2 0.1-0.8, ZrO2 0.1-0.5, Fe 2-7, Al+Mg 0.5-1.2, alkali metal oxide (fluoride) (reduced K,Na,Li) content 0.1-0.35, F (conversion value) 0.05-0.2 and oxide or fluoride of alkali earth metal 0.005-0.2.

Description

Technical field [0001] The invention relates to a welding material for metal welding, in particular to a carbon steel flux-cored welding wire used for carbon dioxide gas shielded welding. Background technique [0002] Carbon dioxide gas-shielded flux-cored welding is compatible with the advantages of welding rods and carbon dioxide gas-shielded solid wire welding. It has high production efficiency, good welding process performance, and adjustable weld composition and operability. Therefore, this welding method has been widely used in the processing and manufacturing of steel structures such as ships and bridges. Because of this, the functional requirements for flux-cored welding wire are getting higher and higher, requiring that the flux-cored welding wire can not only adapt to faster welding speed, but also have good arc stability and welding operation performance; (not only for flat welding All-position welding such as vertical welding, automatic and semi-automatic weldin...

Claims

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Application Information

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IPC IPC(8): B23K35/22
Inventor 芦济培
Owner WUHAN TEMO WELDING CONSUMABLES CO LTD
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