Accession Number : ADD000109

Title :   Wear Resistant Gun Barrel and Method of Making the Same.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Polcha,Raymond J

Report Date : 25 Dec 1973

Pagination or Media Count : 4

Abstract : A wear resistant gun barrel and method of producing it is disclosed in the patent. The barrel has hardened zones or lands which penetrate into the barrel material between rifling grooves and which are highly resistant to wear from repeated projectile firings. The hardened zones or lands are produced by heating a narrow zone on the outside of the gun barrel with a high intensity heat source, allowing any desired pattern to be melted into the steel. The molten zones, when cool, produce areas having increased hardness. The final step is to machine the gun barrel to the proper inner diameter and engrave rifling grooves between the hardened zones.

Descriptors :   *Gun barrels, *Wear resistance, *Patents, Fabrication, Heat treatment, Rifling, Machining

Subject Categories : Guns

Distribution Statement : APPROVED FOR PUBLIC RELEASE