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US 11,534,825 B2Granted
Method for making a metal part with a complex geometry with a thin wall
AssigneesSafran Nacelles, Safran
InventorsAurelie Soula, Pierre Sallot
Life of this patent
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Abstract
A method for producing a thin-walled metal part with complex geometry includes mixing a metal powder with a polymer binder in order to obtain a composite mixture, producing a flexible composite sheet from the composite mixture, cutting, in the flexible composite sheet, a preform based on a contour of the metal part, applying the preform in a mold having a surface configured with a relief of the metal part, and debinding and sintering the preform in order to obtain the metal part.
Claims12
A method for making a metal part with a wall thickness less than 5 mm, the method comprising:
- mixing a metal powder with a polymer binder to form a composite mixture, the metal powder being particles of an atomized metal alloy;
- making a flexible composite sheet from the composite mixture;
- cutting, in the flexible composite sheet, a preform of the metal part;
- applying the preform in a mold having a face defining a relief of the metal part;
- and
- debinding and sintering the preform to form the metal part;
- wherein an appended insert has a fastening portion that is sandwiched between a rear end of the preform and a flexible composite sheet segment,
- wherein, before the debinding and the sintering steps, the composite sheet segment forms a bridge over the fastening portion, the bridge defining a gap between the composite sheet segment, the rear end of the preform, and the fastening portion, and
- wherein, during the debinding and sintering steps, the composite sheet segment deforms to fill the gap and to enclose the fastening portion of the appended insert.
6 more elements
Dependencies are inferred from the claim text.