Removal rates for machining titanium alloys are an order of magnitude slower than those for aluminum. The high strength and hardness coupled with the relatively low elastic modulus and poor thermal conductivity of titanium contribute to the slow speeds and feeds that are required to machine titanium with acceptable tool life. Titanium has extremely attractive properties for air vehicles ranging from excellent corrosion resistance to good compatibility with graphite reinforced composites and very good damage tolerance characteristics. At current buy to fly ratios, the F-35 program will consume as much as seven million pounds of titanium a year at rate production. This figure is nearly double that of the F-22 program, which has a much higher titanium content. As much as 50% of the final cost of titanium parts can be attributed to machining. Specifically, in this task, the authors are working to improve the material removal rate of titanium to reduce cost. Lockheed Martin is evaluating the potential to use lasers to heat the material ahead of the tool to reduce its strength. Coupled with other technologies that can improve the tool life and prevent the titanium material from welding to the tool, there is hope for a practical solution using similar milling machines to those which exist today, if not a simple retro-fit option. This presentation will present the current progress of this project and its potential impact to the Joint Strike Fighter.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    High speed machining of titanium alloys


    Additional title:

    Hochgeschwindigkeitsbearbeitung von Titanlegierungen


    Contributors:


    Publication date :

    2009


    Size :

    4 Seiten, 5 Bilder, 14 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Machining titanium alloys

    Sutherland, I. A. | NTRS | 1976


    High-speed machining of aircraft engine alloys

    Gorsler, F.W. | Tema Archive | 1985


    High-Speed Machining of Titanium by New PCD Tools

    Liu, Jiancheng / Yamazaki, Kazuo / Furuta, Masaaki et al. | SAE Technical Papers | 1999


    High-speed machining of titanium by new PCD tools

    Mori,M. / Furuta,M. / Nakai,T. et al. | Automotive engineering | 1999


    Machining and Grinding of Titanium and Its Alloys

    F. W. Boulger / J. A. Gurklis / C. T. Olofson | NTIS | 1966