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Welding rod contg. titanium dioxide series flux for CO2 gas arc welding

An arc welding, carbon dioxide technology, applied in arc welding equipment, welding medium, welding equipment, etc., can solve the problems of poor weldability, increased smoke and sputtering, etc.

Inactive Publication Date: 2002-02-06
HYUNDAI WELDING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned patent publication, in order to control the generation of diffusible hydrogen that occurs in the weld metal, the amount of metal fluoride is increased, which causes an increase in fumes and sputtering during welding, resulting in poor weldability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] Electrodes containing a titanium dioxide-based flux having a diameter of 1.4 mm were prepared according to the composition in Table 1 below. Then, use the above welding rod to weld on the welding base material JISG3126 SLA325B, and the specific welding conditions are shown in Table 2 below.

[0030]

differentiate

Composition of electrode (weight%)

C

mn

Si

Mg

B

Al

Ni

F

Titanium oxide

compounds

(TiO 2 )

non-titanium oxide

CaF 2

SiO 2

ZrO 2

Al 2 o 3

Reality

apply

example

1

0.050

1.9

0.45

0.80

0.006

0.15

1.50

0.18

6.5

0.1

0.1

-

-

2

0.031

2.0

0.38

0.50

0.01

0.10

1.85

0.20

5.5

0.05

0.1

0.1

0.05

3

...

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PUM

PropertyMeasurementUnit
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Abstract

Provided is a flux cored wire containing titanium oxides for CO2 gas shielded arc welding. The flux cored wire containing titanium oxides for CO2 gas shielded arc welding comprises C 0.03-0.07%, Mn 1.6-2.0%, Si 0.35-0.7%, Mg 0.5-1.1%, B 0.005-0.02%, Al 0.08-0.3%, Ni 0.7-2.0%, F 0.15-0.35%, titanium oxides 5.5-7.5%, 0.25% or less of at least two non-titanates selected from SiO2, Al2O3 and ZrO2, a balance of Fe and other inevitable impurities. The total content of titanate and non-titanate is controlled below 8.0%, based on the total weight of the flux cored wire. The provided flux cored wire containing titanium oxides for CO2 gas shielded arc welding has superior impact toughness at low thermal temperature and excellent all position welding.

Description

technical field [0001] The present invention relates to an electrode containing a titanium dioxide-based flux for carbon dioxide gas arc welding. More specifically, the present invention relates to an electrode containing a titanium dioxide-based flux for carbon dioxide gas arc welding, which has good all-position weldability, particularly good low-temperature toughness. Background technique [0002] Electrodes containing titanium dioxide-based fluxes that use carbon dioxide as a shielding gas are widely used in the welding of mild steel and high-tensile steel structures due to their good welding workability, especially good bead appearance and welding efficiency. [0003] However, in general, the electrode containing the above-mentioned titanium dioxide-based flux contains a large amount of oxides such as titanium dioxide as a slag formation agent, so the slag is acidic. Moreover, because the shielding gas decomposes to produce oxygen, the oxygen content inside the weld me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/365B23K35/22B23K35/30B23K35/362
CPCB23K9/16B23K35/0266B23K35/3053B23K35/3601B23K35/368
Inventor 金龙德
Owner HYUNDAI WELDING
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