Filler for disintegrating projectile
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United States of America Patent
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Feb 20, 1990
Grant Date -
N/A
app pub date -
Jun 3, 1987
filing date -
Jun 3, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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.
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