Cold-molded objects and methods for making the same
AssigneePowdered Ballistics LLC
InventorsLeonard Greene, Randy Silver
Life of this patent
Estimating the term…
Abstract
A method for making an object (e.g., a projectile) includes preparing a premixture of a first metal powder having a first particle size, a second metal powder having a second particle size, and a polymer binder; compressing the premixture in a mold at a pressure of about 75 psi to about 500 psi and a temperature of about 15° C. to about 40° C. to form a projectile preform; and heating the projectile preform at a temperature of about 80° C. to about 350° C. for about 0.5 minutes to about 30 minutes. The polymer binder may include a dry powder coat. The object may have a density between 1 and 4 g/cm3.
Claims28
A method for making an object, the method comprising:
- preparing a premixture of a first metal powder having a first particle size, a second metal powder having a second particle size, and a polymer binder;
- compressing the premixture in a mold at a pressure of about 75 psi to about 500 psi and a temperature of about 15° C. to about 40° C. to form a preform;
- and
- heating the preform at a temperature of about 100° C. to about 250° C. for about 0.5 minutes to about 30 minutes.
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A projectile comprising:
- a first metal powder having a first particle size;
- a second metal powder having a second particle size;
- and
- a polymer binder;
- the projectile having a density between 1 and 3.5 g/cm3.
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Dependencies are inferred from the claim text.