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. 07, 1989
Filed:
Jan. 13, 1988
Applicant:
Inventors:
Gilbert A Saltzman, Howell, NJ (US);
Timothy A Wertz, Manahawkin, NJ (US);
Ira L Friedman, Rumson, NJ (US);
Assignee:
Metallurgical Industries, Inc., Tinton Falls, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148-4 ; 148903 ; 228119 ;
Abstract
The refurbishing process permits an overlay to be formed on a casting to repair cracks, distortions and the like as well as to build up undersized sections. During refurbishing, a plasma arc is established under an electric current of less than 30 amps to form a shallow pool of molten metal on a casting. Powdered metal is delivered slightly above the molten pool and, subsequently, the melted powder and molten pool solidify to an overlay having a high integrity, cast structure which is metallurgically bonded to the casting with minimal dilution.