FLUX FOR SUBMERGED ARC WELDING

Title:

FLUX FOR SUBMERGED ARC WELDING

Document Type and Number:

WIPO Patent Application WO/2015/087843

Kind Code:

A1

Abstract:

Provided is a flux which is for use in submerged arc welding and which can ensure good welding operation in both cases using respectively an alternating-current welding power source and a direct-current welding power source and which can reduce the diffusible hydrogen content of a weld metal. This flux for submerged arc welding has a composition which comprises 25 to 35mass% of MgO, 15 to 30mass% of F (in terms of CaF2), 10 to 25mass% of Al2O3, 10 to 20mass% of SiO2, 0.5 to 5.5mass% in total of Na (in terms of Na2O) and/or K (in terms of K2O), 0.5 to 5mass% of Fe (in terms of FeO), 1 to 5mass% of TiO2, at most 6mass% of CaO, and less than 2.0mass% of Mn (in terms of MnO) with the content of water-soluble SiO2 being 1mass% or less and which satisfies numeral formula (I).

Inventors:

KANO SATORU
OTA MAKOTO

Application Number:

PCT/JP2014/082456

Publication Date:

June 18, 2015

Filing Date:

December 08, 2014

Export Citation:

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Assignee:

KOBE STEEL LTD (JP)

International Classes:

B23K35/362; B23K35/30; C22C38/00; C22C38/04

Foreign References:

JPS6064792A	1985-04-13
JP2013141681A	2013-07-22
JP2007136516A	2007-06-07
JP2003230983A	2003-08-19
JPS4970839A	1974-07-09
JPS5395144A	1978-08-19
JPS5187444A	1976-07-31
JPH0999392A	1997-04-15
JPS6268695A	1987-03-28

Other References: