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:
Jan. 30, 2007
Filed:
Oct. 06, 2004
Richard Brendon Scarlin, Oberflachs, CH;
Richard Brendon Scarlin, Oberflachs, CH;
Alstom Technology Ltd., Baden, CH;
Abstract
A rotor () for a thermal machine, in particular a steam or gas turbine, includes a plurality of rotor disks () which are arranged one behind the other in the rotor axis () and are welded to one another, at least one first rotor disk (), which is arranged in a section of the rotor () which is subject to particularly high thermal loads, including a nickel-base alloy which is able to withstand high temperatures and is welded to at least one second, adjacent rotor disk (), which includes a steel which is able to withstand high temperatures. In a rotor () of this type, accurate testing of the welded joints located in the high-temperature region is achieved by nondestructive testing by virtue of the fact that a first rotor ring () of a steel which is able to withstand high temperatures is inserted between the first and second rotor disks (and), which first rotor ring () on one side is welded to the second rotor disk () and on the other side is joined to the first rotor disk () via an encircling weld seam ().