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US 7,159,519 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.
Claims16
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:
- up to 35 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 content of ferrotungsten increases the density of said frangible slug to provide a frangible slug with a mass that is effective to impart kinetic energy to remove material obstructions from the inside of kilns or furnaces.
1 more element
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 consisting essentially of up to 35 percent ferrotungsten in particulate form, and the balance iron in particulate form and inevitable impurities, and lubricant;
- compacting said mixture at pressure effective to thereby forming a compact with a transverse rupture strength in excess of 5.5 MPa (800 psi);
- and sintering said compact at a temperature no greater than 900° C. to form the frangible slug, wherein said content of ferrotungsten increases the density of said frangible slug to provide a frangible slug with a mass that is effective to impart kinetic energy to remove material obstructions from the inside of kilns or furnaces.
1 more element
Dependencies are inferred from the claim text.