Method for beneficiating ductile scrap metal
AssigneeFord Motor Company
InventorSydney M. Kaufman
Life of this patent
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Abstract
A method is disclosed of converting tangled ribbons of ductile machining scrap into a densified intermediate product useful for making metal powder. A collection of the scrap having a packing density less than 50 lbs/ft.sup.3 is subjected to impacting forces between weighted, freely moving elements and an anvil means for progressively flattening the scrap. The impacting is repeated to substantially flatten all of the scrap and reduce some of the ribbons by fatigue breakage to chips; the resulting processed scrap will have a packing density in excess of 90 lbs/ft.sup.3.
Claims14
A method of hammering ductile tangled ribbons of machining scrap into a densified intermediate product, comprising:
- (a) subjecting a collection of said ductile tangled ribbons of machining scrap having a packing density of less than 50 lbs. per cubic foot to impacting forces between weighted, freely moving elements and an anvil means, said impacting forces being applied to progressively flatten said scrap;
- (b) repeating said impacting until said machining scrap is comprised of a collection of substantially flattened fragmented ribbons having a packing density in excess of 90 lbs. per cubic foot.
A method of making powder metal fromm ductile machining scrap metal, comprising:
- (a) hammering a collection of ductile tangled ribbon machining scrap having a packing density of less than 50 lbs. per cubic foot by subjecting said scrap to impacting forces between weighted, freely moving elements and an anvil means, said impacting being repeated until said machining scrap is flattened and comprised of a collection of substantially flat fragmented ribbons having a packing density in excess of 90 lbs. per cubic foot;
- (b) heat treating said flattened fragmented ribbons to a brittle condition;
- and
- (c) sequentially shredding and pulverizing said fragmented ribbons to a packing density of about 160 lbs. per cubic foot.
Dependencies are inferred from the claim text.