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. 16, 2014
Filed:
Sep. 21, 2009
Raphael Couturier, Sassenage, FR;
Jean-pierre Ferte, Corbeil Essonnes, FR;
Olivier Gillia, Sassenage, FR;
Xavier Firmin Camille Jean Lescure, Boulogne Billancourt, FR;
Bruno Riccetti, Sassenage, FR;
Raphael Couturier, Sassenage, FR;
Jean-Pierre Ferte, Corbeil Essonnes, FR;
Olivier Gillia, Sassenage, FR;
Xavier Firmin Camille Jean Lescure, Boulogne Billancourt, FR;
Bruno Riccetti, Sassenage, FR;
Snecma, Paris, FR;
Abstract
A method of assembling together titanium parts and steel parts by diffusion welding, the method interposing two thin layers of niobium or vanadium and copper respectively between a titanium part and a steel part, evacuating the assembly of parts and interposed metal layers, and subjecting the assembly to hot isostatic compression at a temperature lying in a range 900° C. to 950° C. and at a pressure lying in a range 1000 bars to 1500 bars for about two hours. The method can be applied to fabricating turbine shafts for turbomachines.