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:
Sep. 20, 2022
Filed:
Apr. 25, 2017
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Makoto Egashira, Tokyo, JP;
Shigefumi Nishitani, Tokyo, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
A non-heat treated steel for induction hardening contains, in mass %, C: 0.35 to 0.44%, Si: 0.01 to less than 0.30%, Mn: 0.80 to 1.50%, P: 0.030% or less, S: more than 0.010 to 0.095%, Cr: more than 0.10 to 0.30%, V: 0.050 to 0.200%, N: 0.0040 to 0.0200%, O: 0.0024% or less, Cu: 0.05% or less and Ni: 0.05% or less, and for which fn1≤50.0, fn2: 0.70 to 1.00, and fn3≥1.30. In the steel, a ratio of a number of Mn oxides containing oxygen in an amount of 20.0 mass % or more and Mn in an amount of 10.0 mass % or more to the number of oxides is 10.0% or less1=80C+55C+13Si+4.8Mn+30P+30S+1.5Cr2=C+(Si/10)+(Mn/5)−(5S/7)+(5Cr/22)+1.65V3=−2C—Si+2.33Mn+0.26Cr+V−1.5Cu−1.5Ni.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile