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. 19, 2000
Filed:
Jul. 29, 1998
Stephen D Cherico, N. Olmstead, OH (US);
Naiping D Zhu, Strongsville, OH (US);
Valentin S Nemkov, Auburn Hills, MI (US);
Fosbel International Limited, Swindon, GB;
Abstract
A self-fusing alloy thermal spray coating or a vitreous ceramic coating is fused to a complicated metal shape or convoluted metal surface, such as a waterwall panel having a plurality of tubes interconnected by a plurality of membranes, without significant warpage or adverse change in the microstructure of the material forming the panel. The coating is first applied to the panel and then is heated to a liquidus temperature (typically between about 1000.degree.-2200.degree. F.), by induction at a frequency of greater than about 25 kHz, so as to effect fusing. An inductive coil assembly for this purpose comprises a copper tubular combined electrical current conductor and conduit for circulating cooling water having a first closed end and a second end connectable to a source of cooling fluid and a source of electricity. At least one, and preferably a plurality, of copper noses extend outwardly from the combined conductor and conduit and both conduct electricity and circulate cooling fluid. The noses extend substantially perpendicularly to the combined conductor and conduit and are configured so as to effect proper induction heating of the panel. A magnetic flux concentrator is preferably provided over at least some of the noses. Preheating noses (e.g. solid copper blocks) may be connected to a leading portion of the combined conductor and conduit.