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:
Jul. 30, 2013
Filed:
Jul. 15, 2010
Jumpei Nakayama, Kobe, JP;
Tatsuhiko Kusamichi, Kobe, JP;
Jumpei Nakayama, Kobe, JP;
Tatsuhiko Kusamichi, Kobe, JP;
Kobe Steel. Ltd., Hyogo, JP;
Abstract
Disclosed is a method for producing alloy ingot including: a step of: charging alloy starting material into a cold crucible in a cold-crucible induction melter, and forming melt pool of the alloy starting material by induction heating in inert gas atmosphere; a step of continuing the induction heating and adding first refining agent to the melt pool, and then reducing the content of at least phosphorus from among impurity elements present in the melt pool; and a step of forming alloy ingot by solidifying the melt, the phosphorus content of which has been reduced. The first refining agent is mixture of metallic Ca and flux, where the flux contains CaFand at least one of CaO and CaCl. The weight proportion of the sum of CaO and CaClwith respect to CaFranges from 5 to 30 wt % and the weight proportion of metallic Ca with respect to the melt pool is 0.4 wt % or greater.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile