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:
Dec. 10, 1996
Filed:
Feb. 22, 1995
Sadao Nakai, Osaka, JP;
Kazuaki Arakawa, Osaka, JP;
Kurimoto, Ltd., Osaka, JP;
Abstract
The present invention provides a process for reforming sponge titanium powder into intermediate titanium particles of desirable fluidity and superior bulk specific gravity suitable as a starting material of a titanium or titanium alloy product to be produced by powder metallurgy, comprising the steps of: charging a sponge titanium powder in mill pots of a planetary ball mill together with crushing medium; collapsing the particles of the powder to be consolidated forming a squamation under an inert atmosphere in the mill pots; and adjusting the particle size and particle diameter by cutting the squamated particle under an inert atmosphere in a crushing medium stirring mill. Thus a fundamental process has been developed for producing a material for a compact completely provided with superior properties of titanium such as high specific intensity, high fatique resistance at a considerably low cost just by molding powder and sintering it using an inexpensive powder of low purity without any hydrogeneration-dehydrogeneration treatment, HIP treatment, heat treatment and surface treatment, etc.