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:
Jun. 22, 2004
Filed:
Mar. 12, 2002
Sorin Keller, Oberrohrdorf, CH;
Richard Brendon Scarlin, Oberflachs, CH;
Markus Staubli, Dottikon, CH;
Rodney Williams Vanstone, Rugby, GB;
Alstom Technology LTD, Baden, CH;
Abstract
In a method for welding together two parts ( ), especially of a turbomachine, which are exposed to different temperatures, of which the first part ( ) consists of a steel and the second part ( ) consists of a nickel-base alloy which contains elements which are unfavorable for welding to steel, such as for example Nb, a crack-free welded joint is achieved by the fact that first of all an intermediate layer ( ), in which the amount of unfavorable elements is progressively reduced from the inside outward, is applied to the joining surface ( ) which is provided for the welding, and that then the second part ( ), which has been provided with the intermediate layer ( ), is welded to the first part ( ).