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:
Oct. 21, 2014
Filed:
Nov. 28, 2008
Yasushi Kurisu, Tokyo, JP;
Tatsuo Suidzu, Funabashi, JP;
Yasushi Kurisu, Tokyo, JP;
Tatsuo Suidzu, Funabashi, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Tocalo Co., Ltd., Hyogo, JP;
Abstract
The hearth roll for a continuous annealing furnace is able to suppress the occurrence of buildup on the hearth roll surface and able to be stably used for a long period under the high temperature environment. The hearth roll has a cermet coating comprised 50 to 90 vol % of ceramic and the balance of a heat resistant alloy on its surface, the ceramic containing CrC: over 50 to 90 vol %, AlO: 1 to 40 vol %, YO: 0 to 3 vol %, and ZrB: 0 to 40 vol % and having a balance of unavoidable impurities and pores, the heat resistant alloy containing Cr: 5 to 20 mass %, Al: 5 to 20 mass %, and one or both of Y and Si: 0.1 to 6 mass % and has a balance of one or both of Co and Ni and unavoidable impurities.