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. 28, 2000
Filed:
Apr. 08, 1998
Applicant:
Inventor:
David L Childree, Livermore, CA (US);
Assignee:
Kaiser Aluminum & Chemical Corporation, Pleasanton, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ; B23K / ;
U.S. Cl.
CPC ...
228206 ; 22826251 ; 228219 ;
Abstract
Minor additions of calcium (Ca) to Al--(1% to 14%) Si filler metals result in larger fillets than conventional Al--Si alloys normally used in the NOCOLOK brazing process. This new filler metal can be clad to 2XXX, 3XXX, 6XXX, and 7XXX series alloys and brazed with a fluoride flux. The filler metal contains between 0.005% Ca to 0.3% Ca. The new filler metal could have up to 0.3% Mg and up to 0.3% Li. Additionally, the brazing process can optionally include an aqueous treatment with a fluoride salt to reduce the need for NOCOLOK fluxing.