Determination of Chilling Tendency of Base Iron Melts Thorugh Thermal Analysis

  • Suarez O
  • Heine R
  • Loper Jr C
  • 4

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Abstract

The cast ironfoundryman is constantly aware offactors af fect­ ing the chilling tendency of cast irons, i.e. the capability of the iron to solidify within a given casting in a manner such that carbides form either at edges, in thin sections or along the casting centerline. Even though typical practices in the foundry are based on the control of charge materials, melting and melt handling practices, inoculation materials and techniques, pour­ ing practices and gating systems, etc., to minimize chill forma­ tion, it is not uncommon for a foundry to be besieged by an unexpected onset of carbide formation. This research presents a procedure that will accurately document the chilling tendency of a molten cast iron using thermal analysis technology and appro­ priate statistical handling of the data.

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Authors

  • O.M. Suarez

  • R.W. Heine

  • C.R. Loper Jr

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