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:
Nov. 21, 1995
Filed:
Oct. 25, 1994
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Abstract
Disclosed is a method of lowering the permeability of a difficult-to-work Co alloy by introducing high working strain. It includes the steps of: making a Co alloy by melting, the Co alloy containing 0.1 to 40 atomic % of Ni and/or 0.1 to 40 atomic % of Pt, and 0.5 to 10 atomic % of one or more kinds of elements selected from a group consisting of Ta, Mo, W, V, Nb, Hf, Zr, Ti and B (the upper limit of B: 5 atomic %), the balance being 50 atomic % or more of Co and inevitable impurities; preparing a sheet like ingot having a thickness of 30 mm or less using the Co alloy; and covering the surface of the ingot with a metal capsule or coating it with a glass lubricant, and hot-rolling the treated ingot in such a manner that the reduction is performed in two stages accompanied by re-heating and the whole reduction is 30% or more.