Flux-cored wire

Details Flux-cored wire Flux-cored wire

1993-09-30

1995-04-04

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Compositions

Solid treating composition for liquid metal or charge

148 26, 21914622, 21914624, B23K 3534

Patent

active

054033772

ABSTRACT:
Disclosed is a flux cored wire for low alloy steels and high alloy steels which is excellent in arc stability and moisture absorption resistance of fume/slag. In this flux-cored wire, the flux components and the flux ratio are specified within the following ranges: namely, Na compound (Na.sub.2 O equivalent amount)+K compound (K.sub.2 O equivalent amount) (flux wt %): 1.5-6.0%; soluble Na compound (Na.sub.2 O equivalent amount) (flux wt %): 1.5% or less; soluble K compound (K.sub.2 O equivalent amount) (flux wt %): 0.8% or less; SiO.sub.2 (flux wt %): 5-30%; TiO.sub.2 +ZrO.sub.2 +Al.sub.2 O.sub.3 (flux wt %): 5-40%; flux ratio (wire wt %): 10-30%. Further, the flux components satisfy the formula of {soluble Na compound (Na.sub.2 O equivalent amount)+0.1.times.soluble K compound (K.sub.2 O equivalent amount)}/{SiO.sub.2 +0.5.times.(TiO.sub.2 +ZrO.sub.2 +Al.sub.2 O.sub.3)}: 40.times.10.sup.-3 or less. In addition, one or more kinds of a Li compound (Li.sub.2 O equivalent amount) and a Cs compound (Cs.sub.2 O equivalent amount) may be added in the total amount of 0.1-3.0 wt % so as to satisfy the formula of {soluble Na compound (Na.sub.2 O equivalent amount)+0.1.times.soluble K compound (K.sub.2 O equivalent amount)-Li compound (Li.sub.2 O equivalent amount)-Cs compound (Cs.sub.2 O equivalent amount)}/{SiO.sub.2 +0.5.times.(TiO.sub.2 +ZrO.sub.2 +Al.sub.2 O.sub.3)}=20.times.10.sup.-3 or less.

REFERENCES:
patent: 3959031 (1976-05-01), More
patent: 4723061 (1988-02-01), Munz et al.
patent: 4832742 (1989-05-01), Ototam
patent: 5120931 (1992-06-01), Kotecki et al.
patent: 5205856 (1993-04-01), Prinz
Patent Abstracts of Japan, vol. 14, No. 552 (M-1056), Dec. 7, 1990, JP-A-2235596, Sep. 18, 1990.

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