Method for making a strengthened spinner having integrally formed ribs
First Claim
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1. A method of forming a spinner for centrifuging fibers from molten material comprising:
- warm working a dispersion strengthened metal at a temperature above the minimum warm working temperature and below the recrystallization temperature of the metal, to form a spinner having an annular peripheral wall and a plurality of ribs formed integrally with the peripheral wall and extending radially inwardly therefrom;
heat treating the warm worked spinner to recrystallize the metal to a coarse grain structure; and
forming a plurality of orifices through the peripheral wall.
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Abstract
A method of forming a spinner for centrifuging fibers from molten material is disclosed. A dispersion strengthened metal is warm worked at a temperature above the minimum warm working temperature and below the recrystallization temperature of the metal to form a spinner having an annular peripheral wall and a plurality of ribs formed integrally with the peripheral wall and extending radially inwardly therefrom. The spinner is heat treated to recrystallize the metal to a coarse grain structure, and a plurality of fiber-forming orifices are formed in the peripheral wall.
26 Citations
20 Claims
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1. A method of forming a spinner for centrifuging fibers from molten material comprising:
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warm working a dispersion strengthened metal at a temperature above the minimum warm working temperature and below the recrystallization temperature of the metal, to form a spinner having an annular peripheral wall and a plurality of ribs formed integrally with the peripheral wall and extending radially inwardly therefrom; heat treating the warm worked spinner to recrystallize the metal to a coarse grain structure; and forming a plurality of orifices through the peripheral wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15)
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14. A method of forming a spinner for centrifuging fibers from molten material comprising:
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spin forming a dispersion strengthened metal at a temperature above the minimum warm working temperature and below the recrystallization temperature of the metal, to form a spinner having an annular peripheral wall and a plurality of ribs formed integrally with the peripheral wall and extending radially inwardly therefrom, wherein the metal is spin formed onto a mandrel having a cylindrical surface with slots formed therein, the metal is forced against the cylindrical surface by a roller under a hydraulic pressure within the range from about 0.7 MPa to about 7.0 MPa, the roller making from about 10 passes to about 20 passes against the metal, wherein the metal takes the shape of the cylindrical surface to form the ribbed peripheral wall of the spinner; heat treating the spin formed spinner to recrystallize the metal to a coarse grain structure; and forming a plurality of orifices through the peripheral wall.
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16. A method of forming a spinner for centrifuging fibers from molten material comprising:
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spin forming a dispersion strengthened metal at a temperature above the minimum warm working temperature and below the recrystallization temperature of the metal, to form a spinner having an annular peripheral wall and a plurality of ribs formed integrally with the peripheral wall and extending radially inwardly therefrom, the ribs having a generally frustoconical radial cross section, wherein the metal is spin formed onto a mandrel having a cylindrical surface with slots formed therein, the metal is forced against the cylindrical surface by a roller under a hydraulic pressure within the range from about 0.7 MPa to about 7.0 MPa, the roller making from about 10 passes to about 20 passes against the metal, wherein the metal takes the shape of the cylindrical surface to form the ribbed peripheral wall of the spinner; heat treating the spin formed spinner to recrystallize the metal to a coarse grain structure; and forming a plurality of orifices through the peripheral wall. - View Dependent Claims (17, 18, 19, 20)
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Specification