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Home > Tips and Facts > Foundry Melting Furnaces > Crucible Furnaces

Crucible Furnaces

Crucible furnaces are one of the oldest and simplest types of melting unit used in the foundry. The furnaces uses a refractory crucible which contains the metal charge. The charge is heated via conduction of heat through the walls of the crucible. The heating fuel is typically coke, oil, gas or electricity. Crucible melting is commonly used where small batches of low melting point alloy are required. The capital outlay of these furnaces makes them atractive to small non-ferrous foundries.

Crucible furnaces are typically classified according to the method of removing the metal from the crucible:

  1. Tilting furnace, in which the molten metal is transferred to the mould or ladle by mechanically tilting the crucible and furnace body.

  2. Lift-out furnace, in which the crucible and molten metal are removed from the furnace body for direct pouring into the mould.

  3. Bale-out furnace, in which the metal is ladled from the crucible to the mould.

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Previous: << Basics of Foundry Melting Furnaces - Introduction

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Atlas Foundry Company, Inc.
601 N. Henderson Avenue
Marion, IN 46952-3348
Telephone: (765) 662-2525 • Fax: (765) 662-2902
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Basics of Foundry Melting Furnaces
  1. Introduction
  2. Crucible Furnaces
  3. The Cupola Furnace
  4. Induction Furnaces
  5. Electric Arc Furnaces

Article by Jeff Meredith, foundry consultant with Casting Solutions Pty Ltd.
Reprinted with permission