Induction furnace testing of the durability of prototype crucibles in a molten metal environment

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Engineered ceramic crucibles are commonly used to contain molten metal. Besides high temperature stability, other desired crucible characteristics include thermal shock resistance, minimal reaction with the molten metal and resistance to attack from the base metal oxide formed during melting. When used in an induction furnace, they can be employed as a “semi-permanent” crucible incorporating a dry ram backup and a ceramic cap. This report covers several 250-lb single melt crucible tests in an air melt induction furnace. These tests consisted of melting a charge of 17-4PH stainless steel, holding the charge molten for two hours before pouring off the ... continued below

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Jablonski, Paul D. September 1, 2005.

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Description

Engineered ceramic crucibles are commonly used to contain molten metal. Besides high temperature stability, other desired crucible characteristics include thermal shock resistance, minimal reaction with the molten metal and resistance to attack from the base metal oxide formed during melting. When used in an induction furnace, they can be employed as a “semi-permanent” crucible incorporating a dry ram backup and a ceramic cap. This report covers several 250-lb single melt crucible tests in an air melt induction furnace. These tests consisted of melting a charge of 17-4PH stainless steel, holding the charge molten for two hours before pouring off the heat and then subsequently sectioning the crucible to review the extent of erosion, penetration and other physical characteristics. Selected temperature readings were made throughout each melt. Chemistry samples were also taken from each heat periodically throughout the hold. The manganese level was observed to affect the rate of chromium loss in a non-linear fashion.

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Publisher - in LMPC 2005: Proceedings of the 2005 International Symposium on Liquid Metal Processing and Casting, ed. by Peter Lee et al., 2005, ISBN 0-87170-827-2, pp. 113-120

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  • 2005 International Symposium on Liquid Metal Processing and Casting, Sante Fe, NM, Sept. 18-21, 2005

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  • Report No.: DOE/ARC-2005-044
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 901568
  • Archival Resource Key: ark:/67531/metadc884310

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  • September 1, 2005

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 4, 2016, 2:03 p.m.

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Jablonski, Paul D. Induction furnace testing of the durability of prototype crucibles in a molten metal environment, article, September 1, 2005; (digital.library.unt.edu/ark:/67531/metadc884310/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.