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. 17, 2002
Filed:
Sep. 28, 2000
Applicant:
Inventor:
George H. Harth, III, Wadsworth, OH (US);
Assignee:
The Babcock & Wilcox Company, New Orleans, LA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 9/14 ;
U.S. Cl.
CPC ...
F16L 9/14 ;
Abstract
A method of corrosion protecting a tube having an end portion extending into a tube receiving hole of a mud drum of a boiler and the tube produced by that method. The end portion of the tube is provided with a corrosion resistant cladding layer which may contain chromium. Laser cladding is used to produce the corrosion resistant cladding layer, which advantageously tapers along a length of the end portion of the tube. The tube may be swaged before or after the cladding is applied and suitable heat treatments may be performed on the bare or clad tube to develop suitable properties in the tube, the cladding, or a tube-cladding interface.