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:
Jun. 08, 2010
Filed:
Jan. 24, 2006
Masaaki Kobayashi, Hamamatsu, JP;
Satoru Nonaka, Hamamatsu, JP;
Yukio Agata, Hamamatsu, JP;
Teiichiro Saito, Hamamatsu, JP;
Tadashi Ito, Hamamatsu, JP;
Masaaki Kobayashi, Hamamatsu, JP;
Satoru Nonaka, Hamamatsu, JP;
Yukio Agata, Hamamatsu, JP;
Teiichiro Saito, Hamamatsu, JP;
Tadashi Ito, Hamamatsu, JP;
Nippon Welding Rod Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a ferritic stainless steel welding wire which allows prevention of wire breaking, fine refining of crystal grains, and increased cracking resistance. A wire rod used essentially consists of, in mass %, 0.03% or less of C, 3% or less of B, 3% or less of Mn, 2% or less of Ni, 11 to 20% of Zr, 3% or less of Mo, 1% or less of Co, 2% or less of Cu, 0.02 to 2.0% of Al, 0.2 to 1.0% of Ti, 0.02% or less of O, 0.04% or less of N, at least one of Nb and Ta, the mass % thereof being eight times the total mass % of the C and N to 1.0 mass %, and the balance of Fe and unavoidable impurities. When the number of crystals per square mm (mm) of a cross section of the wire rod is defined as m, a grain number of the crystal expressed by an exponent (G) in an expression of m=8×2is set to 3 to 10 by the heat treatment.