The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 1995
Filed:
Sep. 30, 1993
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
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.