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:
Aug. 25, 1981
Filed:
Jul. 31, 1979
Applicant:
Inventors:
Gregor Baladjanian, Malibu, CA (US);
Robert L Rothman, San Pedro, CA (US);
Assignee:
Chromalloy American Corporation, St. Louis, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P / ; B23K / ;
U.S. Cl.
CPC ...
228119 ; 2940207 ; 2940218 ; 228194 ; 228238 ;
Abstract
Cracks in superalloys are braze repaired after notching or cutting away material adjacent the cracks, filling the recess with a braze component containing a melting point depressant and subjecting the repair area to a first elevated temperature to form a melt. The melting point of the repair region is raised by diffusing the depressant into the braze material and repair region at second and third elevated temperatures lower than the first elevated temperature to form a repaired superalloy exhibiting highly desirable properties.