Method for thermal processing bullets
OwnerPeter Paulininventor
Life of this patent
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Abstract
A method for thermal processing bullets to yield a refined grain structure, the method includes obtaining one or more bullets, disposing the one or more bullets within a chamber having a temperature gradient between ambient temperature and cryogenic temperature, the chamber having a plurality of temperature zones, moving the one or more bullets between the plurality of temperature zones of the chamber at a predetermined rate, and returning the one or more bullets to the ambient temperature.
Claims20
A method for thermal processing bullets to yield a refined grain structure, the method comprising:
- obtaining one or more bullets, each bullet comprising a bullet cartridge case detachably affixed to a bullet lead core jacketed with a gilding metal such that, upon firing the bullet, the bullet lead core with gilding metal jacket is propelled down a bore of a gun barrel;
- disposing the one or more bullets within a chamber having a temperature gradient between ambient temperature and cryogenic temperature, the chamber having a plurality of temperature zones;
- moving the one or more bullets between the plurality of temperature zones of the chamber at a predetermined rate, wherein at least one of the plurality of temperature zones is predetermined to cause a grain size of the bullet lead core with gilding metal jacket of the one or more bullets to be less than 50 microns;
- and
- returning the one or more bullets to the ambient temperature.
A method for thermal processing bullets to yield a refined grain structure, the method comprising:
- obtaining one or more bullets, each bullet comprising a bullet cartridge case detachably affixed to a bullet lead core jacketed with a gilding metal such that, upon firing the bullet, the bullet lead core with gilding metal jacket is propelled down a bore of a gun barrel;
- disposing the one or more bullets within a chamber configured to have a first temperature zone and a different second temperature zone, wherein the second temperature zone is predetermined to cause a grain size of the bullet lead core with gilding metal jacket of each of the one or more bullets to be less than 50 microns;
- moving the one or more bullets from the first temperature zone to the second temperature zone of the chamber at a predetermined rate;
- holding the one or more bullets within the second temperature zone for a predetermined time period;
- and
- returning the one or more bullets to the first temperature zone.
A method for thermal processing bullets to yield a refined grain structure, bullets, each bullet comprising a bullet cartridge case detachably affixed to a bullet lead core jacketed with a gilding metal such that, upon firing the bullet, the bullet lead core with gilding metal jacket is propelled down a bore of a gun barrel;
- the method comprising:
- disposing a bullet within a chamber configured to expose the bullet to a first temperature and to a second temperature different from the first temperature, using a predetermined rate of temperature change, wherein the second temperature and the predetermined rate of temperature change are predetermined to cause a grain size of the bullet lead core with gilding metal jacket of the bullet to be 50 microns or less, to thereby reduce an adhesive stress and increase a sealing capacity between the bullet lead core with gilding metal jacket and a gun barrel;
- moving a temperature of the bullet from the first temperature to the second temperature at the predetermined rate;
- holding the bullet at the second temperature for a predetermined time period;
- and
- returning the temperature of the bullet to the first temperature.
Dependencies are inferred from the claim text.