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:
Mar. 22, 2016
Filed:
Feb. 09, 2012
Hidenori Nako, Kobe, JP;
Ken Yamashita, Fujisawa, JP;
Minoru Otsu, Fujisawa, JP;
Mikihiro Sakata, Fujisawa, JP;
Genichi Taniguchi, Fujisawa, JP;
Hidenori Nako, Kobe, JP;
Ken Yamashita, Fujisawa, JP;
Minoru Otsu, Fujisawa, JP;
Mikihiro Sakata, Fujisawa, JP;
Genichi Taniguchi, Fujisawa, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
This weld metal has excellent creep characteristics and has a given chemical composition. In the weld metal, the value A defined by equation (1) is 200 or greater, and carbide particles each having an equivalent-circle diameter of 0.40 μm or more have an average equivalent-circle diameter less than 0.85 μm. In the segments that connect the centers of three or more carbide particles which are present on a 6-μm straight line and which each has an equivalent-circle diameter of 0.40 μm or more, the sum of the lengths of the portions where the segments intersect the carbide particles is 25% or more of the overall length of the segments.Value=([V]/51+[Nb]/93)/{[V]×([Cr]/5+[Mo]/2)}×10  (1)In the equation, [V], [Nb], [Cr], and [Mo] respectively indicate the contents (mass %) of V, Nb, Cr, and Mo in the weld metal.