The feasibility of electrochemically machining rifling and cartridge chamber contours in gun barrels was determined. Electrochemical machining (ECM) tests were conducted using single-electrode, continuous-feed, straight-plunge cutting. Multiple-groove, straight rifling was formed successfully in 7.62 mm and 20 mm, Cr-Mo-V steel (MIL-S-46047) gun barrel sections. Cartridge chambers were machined in 20 mm sections AISI 1018 cold rolled steel and Cr-Mo-V steel. Although ECM tests were successful with the mild steel (1018), shape and surface-finish tolerances were not concurrently achieved in the low alloy steel (Cr-Mo-V). Test results did indicate that ECM of cartridge chambers in the low alloy steel could be possible with additional experimentation. Based on program test results and state-of-the-art, when compared to the efficiencies of other forming processes such as rotary forging and broaching, it is recommended that no immediate efforts be made to apply ECM in the production of small arms gun barrels. (Kursetz)


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    Title :

    Electrochemical machining of cartridge chamber and rifling contours for small arms


    Additional title:

    Elektrochemisches Bearbeiten von Patronenkammer und der Laufzuege von kleineren Waffen


    Contributors:

    Published in:

    Publication date :

    1976


    Size :

    47 Seiten


    Type of media :

    Report


    Type of material :

    Print


    Language :

    English