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Title: Casting Apparatus Including A Gas Driven Molten Metal Injector And Method

Abstract

The filtering molten metal injector system includes a holder furnace, a casting mold supported above the holder furnace, and at least one molten metal injector supported from a bottom side of the casting mold. The holder furnace contains a supply of molten metal. The mold defines a mold cavity for receiving the molten metal from the holder furnace. The molten metal injector projects into the holder furnace. The molten metal injector includes a cylinder defining a piston cavity housing a reciprocating piston for pumping the molten metal upward from the holder furnace to the mold cavity. The cylinder and piston are at least partially submerged in the molten metal when the holder furnace contains the molten metal. The cylinder or the piston includes a molten metal intake for receiving the molten metal into the piston cavity when the holder furnace contains molten metal. A conduit connects the piston cavity to the mold cavity. A molten metal filter is located in the conduit for filtering the molten metal passing through the conduit during the reciprocating movement of the piston. The molten metal intake may be a valve connected to the cylinder, a gap formed between the piston and an open endmore » of the cylinder, an aperture defined in the sidewall of the cylinder, or a ball check valve incorporated into the piston. A second molten metal filter preferably covers the molten metal intake to the injector.« less

Inventors:
 [1];  [2];  [3];  [4];  [5]
  1. (Westlake, OH)
  2. (Murrysville, PA)
  3. (Apollo, PA)
  4. (Morin Heights, CA)
  5. (Riviere-Beaudette, CA)
Issue Date:
OSTI Identifier:
879676
Patent Number(s):
6,578,620
Application Number:
09/711667
Assignee:
Alcoa Inc. (Pittsburgh, PA) OSTI
DOE Contract Number:  
86X-SU545C
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Trudel, David R., Meyer, Thomas N., Kinosz, Michael J., Arnaud, Guy, and Bigler, Nicolas. Casting Apparatus Including A Gas Driven Molten Metal Injector And Method. United States: N. p., 2003. Web.
Trudel, David R., Meyer, Thomas N., Kinosz, Michael J., Arnaud, Guy, & Bigler, Nicolas. Casting Apparatus Including A Gas Driven Molten Metal Injector And Method. United States.
Trudel, David R., Meyer, Thomas N., Kinosz, Michael J., Arnaud, Guy, and Bigler, Nicolas. Tue . "Casting Apparatus Including A Gas Driven Molten Metal Injector And Method". United States. https://www.osti.gov/servlets/purl/879676.
@article{osti_879676,
title = {Casting Apparatus Including A Gas Driven Molten Metal Injector And Method},
author = {Trudel, David R. and Meyer, Thomas N. and Kinosz, Michael J. and Arnaud, Guy and Bigler, Nicolas},
abstractNote = {The filtering molten metal injector system includes a holder furnace, a casting mold supported above the holder furnace, and at least one molten metal injector supported from a bottom side of the casting mold. The holder furnace contains a supply of molten metal. The mold defines a mold cavity for receiving the molten metal from the holder furnace. The molten metal injector projects into the holder furnace. The molten metal injector includes a cylinder defining a piston cavity housing a reciprocating piston for pumping the molten metal upward from the holder furnace to the mold cavity. The cylinder and piston are at least partially submerged in the molten metal when the holder furnace contains the molten metal. The cylinder or the piston includes a molten metal intake for receiving the molten metal into the piston cavity when the holder furnace contains molten metal. A conduit connects the piston cavity to the mold cavity. A molten metal filter is located in the conduit for filtering the molten metal passing through the conduit during the reciprocating movement of the piston. The molten metal intake may be a valve connected to the cylinder, a gap formed between the piston and an open end of the cylinder, an aperture defined in the sidewall of the cylinder, or a ball check valve incorporated into the piston. A second molten metal filter preferably covers the molten metal intake to the injector.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {6}
}

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