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US 4,902,346 AGranted
Filler for disintegrating projectile
AssigneeNWM de Kruithoorn B.V.
InventorsJohan S. Leemans, Heinz J. Dorweiler
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AssigneeNWM de Kruithoorn B.V.
InventorsJohan S. Leemans, Heinz J. Dorweiler
Estimating the term…
A filler for disintegrating projectiles for training ammunition composed essentially of a screened low carbon, unalloyed steel powder produced by atomizing a corresponding steel melt to form a steel powder, subsequently subjecting the powder to a reducing soft annealing treatment at a temperature of between about 900.degree. and 1050.degree. C., subjecting the annealed product to a comminuting (e.g., beating, impact and scrubbing) process followed by screening, wherein the comminuting process lasts longer than 60 minutes and the screened powder has a grain size below 0.315 mm, an uncompressed or apparent density of between 3.9 and about 4.6 g.multidot.cm.sup.-3, and is compressible in such a manner that the resulting density of a pressed body to be incorporated into the disintegrating projectile lies between about 6.5 and 7.15 g/cm.sup.3.
Filler for disintegrating projectiles for training ammunition composed essentially of a screened low carbon, unalloyed steel powder having been produced by atomizing a corresponding steel melt to form a steel powder, subsequently subjecting the powder to a reducing soft annealing treatment at a temperature of between about 900.degree. and 1050.degree. C., and subjecting the annealed product to a comminuting process followed by screening, wherein the comminuting process lasts longer than 60 minutes and said screened powder having a grain size below 0.315 mm, an uncompressed density of between 3.9 and about 4.6 g/cm.sup.3, and being compressible in such a manner that the resulting density of a pressed body to be incorporated into the disintegrating projectile lies between about 6.5 and 7.15 g/cm.sup.3.
Filler for disintegrating projectiles for training ammunition, said filler being composed essentially of unalloyed steel powder screened to a grain size of less than 0.315 mm, having an uncompressed density of about 3.9 to 4.6 g/cm.sup.3, and being compressible into a body having a density of 6.5 to about 7.15 g/cm.sup.3.
Dependencies are inferred from the claim text.