Method and apparatus for pulsed pressure molding
First Claim
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1. A method for pulsed pressure molding comprising:
- liquefying a metal in a crucible disposed in a crucible chamber;
applying a differential pressure level to the liquefied metal so as to force the liquefied metal into a mold;
raising the pressure of the liquefied metal in the mold to a solidification pressure in oscillating pressure steps; and
allowing the liquefied metal to solidify.
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Abstract
Method and apparatus for creating a molded product by first liquefying a metal in a crucible disposed in a crucible chamber and then applying a differential pressure level to the liquefied metal so as to force the liquefied metal into a mold. Once the liquefied metal is drawn into the mold, the pressure of the liquefied metal in the mold is raised to a solidification pressure in oscillating pressure steps. Once the pressure is raised to the solidification pressure, the liquefied metal is allowed to solidify.
8 Citations
15 Claims
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1. A method for pulsed pressure molding comprising:
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liquefying a metal in a crucible disposed in a crucible chamber; applying a differential pressure level to the liquefied metal so as to force the liquefied metal into a mold; raising the pressure of the liquefied metal in the mold to a solidification pressure in oscillating pressure steps; and allowing the liquefied metal to solidify. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A pulsed pressure molding machine comprising:
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crucible disposed in a crucible chamber; differential pressure unit for applying a differential pressure to a liquefied metal disposed in the crucible; mold that receives the liquefied metal when a differential pressure is applied to the liquefied metal; and pressure controller that controls the pressure unit so as to increase the pressure applied to the liquefied metal in increasing oscillating pressure steps. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A molded product manufactured by a molding process that comprises:
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liquefying a metal; applying a differential pressure level to the liquefied metal so as to force the liquefied metal into a mold; raising the pressure of the liquefied metal in the mold to a solidification pressure in oscillating pressure steps; and allowing the liquefied metal to solidify.
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Specification