Back to results
US 7,891,299 B2Granted
Slug for industrial ballistic tool
AssigneeOlin Corporation
InventorsPeter W. Robinson, Jack D. Dippold
Life of this patent
Estimating the term…
Abstract
A frangible projectile for expelling from an industrial ballistic tool may be formed by a powder metallurgy process. A preferred embodiment of slug consists essentially of compacted and optionally sintered material and comprises up to 35% ferrotungsten in particulate form, up to 3% lubricant, and the balance iron in particulate form with inevitable impurities.
Claims20
A method for manufacturing a frangible slug for firing from an industrial ballistic tool, the method comprising:
- providing a mixture of powders having a composition that consists essentially of:
- from at least about 30 percent ferrotungsten and up to about 50 percent ferrotungsten in particulate form,
- up to 3 percent lubricant, and
- the balance iron in particulate form and inevitable impurities;
- compacting said mixture to form a compact;
- and
- sintering said compact to form the frangible slug
- wherein said mixture of powders includes an amount of at least 30% ferrotungsten that is sufficient to provide a high level of slug frangibility and pulverization.
5 more elements
A method for manufacturing a frangible slug for firing from an industrial ballistic tool, comprising the steps of:
- providing a mixture having a composition that consists essentially of:
- metallic powder including iron, and ferrotungsten in an amount of at least 30% that is sufficient to provide a high level of slug frangibility and pulverization, and
- lubricant;
- compacting said mixture thereby forming a compact;
- and
- sintering said compact at a temperature no greater than 900° C.
3 more elements
Dependencies are inferred from the claim text.