Machine Casting of Ferrous Alloys

Abstract

An experimental ferrous casting machine of 20 lbs. capacity was designed and constructed to evaluate rheocasting and conventional casting processes. This machine is a bottom-pour furnace in which the transfer of the metal 'slurry' to the mold was accomplished by pressurizing the furnace chamber and retracting a stopper rod. The melting and casting operation took place entirely under an inert atmosphere at low positive pressure to minimize slag formation. Several experimental models of both conduction and induction type MHD valves were made and it has been demonstrated that some lift can be obtained from these MHD devices to hold the bulk metal and to control its flow but a much stronger lift force would be required for any practical casting machine. Protective coatings for graphite were studied.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1976
Accession Number
ADA034198

Entities

People

  • B. A. Heyer
  • C. P. Biswas
  • H. R. Larson

Tags

DTIC Thesaurus Topics

  • Alloys
  • Atmospheres
  • Coatings
  • Controlled Atmospheres
  • Graphitic Materials
  • Iron Alloys
  • Protective Coatings

Fields of Study

  • Materials science

Readers

  • Electrical Engineering
  • Maritime Combat Support and Expeditionary Logistics.
  • Metallurgy