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:
May. 19, 2015
Filed:
Jun. 14, 2013
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Masaaki Igarashi, Sanda, JP;
Kazuhiro Shimoda, Nishinomiya, JP;
Tomio Yamakawa, Kawanishi, JP;
Hisashi Amaya Amaya, Kyoto, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
A method for manufacturing an Ni base alloy pipe stock comprises piercing and rolling a billet by use of Mannesmann piercing and rolling mill. The pipe stock has controlled amounts of C, Si, Mn, P, S, Cr, Ni, Mo, W, Cu, Al, N, with the balance being Fe. With the method, the following equations are satisfied, wherein values of T, Pand Prepresented by the following equations (1) to (3) being not more than 1300, not more than 200 and not less than 0, respectively=1380−5000P−100S−4400C  (1),Ni+10(Mo+0.5W)+100N  (2),=(Ni−50)+10(N−0.1)−2(Cr−25)−5(Mo+0.5W−6)+12  (3),wherein each element symbol in the equations represents mass % of the element concerned.