A wide variety of products go into the crucible system for induction melting.

Crucibles can be isostatically pressed, for uniform density, or cast in capacities up to 3000kg.  Backing the crucible is a monolithic rammed lining, a slip plane and possibly an outer sleeve or a quick-change crucible-basket assembly; atomising or metering nozzles may be required for bottom pouring

The casting manufacturing system also allows for special shapes to be made, such as ladles, tundishes, launders, pouring spouts.


CG-TP_with_spout2Vibro-Cast Crucibles and Shapes

Large crucibles, above the 200mm diameter upper limit of the isostatic press, are made by vibro-casting. With this process, the thixotropic nature of a damp refractory mass under vibration is utilised and the material flows into the pattern space. The refractory shape is dried before being sintered in a kiln at high temperature.

This process lends itself to the production of almost any shape. Crucibles of any size can be made and details such as pouring lips and internal spouts can be integrated into the design. Transfer ladles can include lids and spouts for bottom pouring; complex tundishes and distribution boxes are made with this method.

A wide variety of materials are available, with bonding generally resulting from the ethyl silicate process; this ensures a ‘pure’ matrix, free from the performance-limiting alkalis often associated with refractories.

Cast zirconia shapes benefit from a solid-state zirconia bonding system, inferring no chemical weaknesses.

VibroCast Crucible Size List

Transfer Ladle Sizes List