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. 13, 1994
Filed:
May. 18, 1993
Amit K Ghosh, Ann Arbor, MI (US);
The Regents of the University of Michigan, Ann Arbor, MI (US);
Abstract
An apparatus and method for producing a rapidly solidified ingot characterized by a fine scale microstructure capable of precipitating uniformly dispersed fine particles. A charge of the material is placed in a crucible and heated by a furnace to melt the charge. The melt is discharged from the crucible in a stream along a pouring axis. An ingot mold is oriented at an angle with respect to the pouring axis so that the stream is received in the mold. As the melt is being poured into the mold, the mold is rotated about its central axis at a predetermined speed to continuously shear, both circumferentially and downwardly, a thin layer of the melt from the stream as the stream contacts the sidewall surfaces of the mold. The thin layer is rapidly solidified by the extraction of heat through the mold and is formed, as said ingot mold fills and successive layers are solidified, into an ingot having a fine microstructure capable of developing uniformly dispersed fine particles.