Compaction of powder metal
AssigneeIra L. Friedman
InventorsIra L. Friedman, Richard Phillips
Life of this patent
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Abstract
The method of compacting agglomerated powder comprises the steps of receiving a mass of agglomerated powder of random sizes; separating the mass into at least three distinct range of sizes including a fine range, a medium range and a coarse range; and thereafter compacting the agglomerated powder of each of the ranges into green briquettes, each of which is characterized in having a self-supporting structure to permit handling for a subsequent sintering operation to form a bonded compacted mass.
Claims16
A method of compacting agglomerated powder comprising the steps of
- receiving a mass of agglomerated powder of random sizes;
- separating said mass into at feast three distinct range of sizes including a fine range, a medium range and a coarse range;
- and
- thereafter compacting the agglomerated powder of one of said ranges into a green briquette characterized in having a self-supporting structure to permit handling for a subsequent sintering operation to form a compacted mass.
A method of compacting agglomerated powder comprising the steps of
- determining the size and shape for a bonded compacted mass;
- receiving a mass of agglomerated powder of random sizes;
- separating said mass into at least three distinct range of sizes including a fine range, a medium range and a coarse range;
- and
- thereafter compacting the agglomerated powder of one of said ranges into said size and shape to form said bonded compacted mass without a linear deviation from said predetermined size and shape.
A method of compacting agglomerated powder comprising the steps of
- receiving a mass of agglomerated powder of random sizes;
- separating said mass into at least three distinct range of sizes including a fine range, a medium range and a coarse range;
- thereafter compacting the agglomerated powder of one of said ranges into a green briquette characterized in having a self-supporting structure to permit handling for a subsequent sintering operation to form a compacted mass;
- placing the briquette on a soft porous surface to allow lubricant and/or binder in the briquette to diffuse from the base of the briquette;
- and
- thereafter sintering the briquette while on the porous surface whereby the briquette is allowed to slide on the surface as the briquette shrinks during sintering.
A method of compacting agglomerated powder comprising the steps of
- receiving a mass of agglomerated powder of random sizes;
- separating said mass into at least three distinct range of sizes including a fine range, a medium range and a coarse range;
- thereafter compacting the agglomerated powder of one of said ranges into a first green briquette and compacting the agglomerated powder of at least one other of said ranges into a second green briquette, each said briquette being characterized in having a self-supporting structure to permit handling for a subsequent sintering operation to form a compacted mass;
- sintering said first briquette to obtain a first compacted product;
- and
- sintering said seond briquette to obtain a second compacted product wherein said first product and said second product have the same mass, volume and dimensions.
Dependencies are inferred from the claim text.