Coreless Induction Furnace Linings

Capital manufactures an extensive range of spinel-forming linings. These have been specifically developed for a variety of metals and some allow for a mixed melting programme. The furnace lining products are complemented by a complete range of toppings, spout, repair, and patching materials.

Key Benefits:

  • Capital is at the forefront of technologically innovative induction furnace lining solutions
  • We are a leading company in terms of the quality and performance of induction furnace linings
  • Our superior and comprehensive product ranges are backed by effective service and technical support
  • Capital has a process of continual development to advance the performance of existing products and to introduce new ones

Product Range

Dry Rammed Linings

Capital supply a selection of high performance dry rammed products for vacuum induction melting furnaces to meet the mixture of the master alloy.

• Coral V40  • Coral V40-DT  • CoralV43  • Coral V43-DT

Topping and Spout Material

Chemically bonded high strength materials compatible with Capital’s dry linings.

Coil Screed

High grade fine hydraulic cements.

Slip Plane Material (Micanite/Mica)

The slip plane is positioned against the coil screed to provide a smooth surface. This is essential for uninhibited reversible movement of the refractory lining caused by its thermal expansion and contraction. The mica also offers a degree of protection against metal penetration.

Mica Mesh

A sandwich of metal mesh between two layers of mica is available which is used in systems that give early warning of metal penetration through a lining.

Repair Materials

Capital supply a selection of high performance dry rammed products for vacuum induction melting furnaces to meet the mixture of the master alloy.

Dry Rammed Lining

Quality Al₂O₃ MgO SiO₂ CaO Fe₂O₃ Description
Coral V40 38.0 58.0 2.2 1.0 0.1 High performance dry vibratable.
Coral V43 33.7 63.2 0.7 1.1 0.4 Superior performance providing high resistance to aggressive alloys.

Topping and Spout Material

Product Name Product Description Maximum Grain Size / mm Bond Maximum Service Temperature / °C
Coral V40DT Dry vibration heat set topping compatible with Coral V40 8 Ceramic 1700
Coral V43DT Dry vibration heat set topping compatible with Coral V43 8 Ceramic 1700
Capram 90 A family of chemically bonded, high alumina, plastic/plaster refractories. 5 Chemical 1800

Coil Screed (Grout)

Product Name Product Description Maximum Grain Size / mm Bond Maximum Service Temperature / °C
Silkote 90 High alumina induction furnace coil screed with good applicability and surface finish. 1 Hydraulic 1700
Capscreed High strength high alumina induction furnace coil screed widely used with push-out furnaces. 1 Hydraulic 1680
Capscreed 96C High fluidity vibratable coil screed. 1 / 3 Hydraulic 1800
Capgrout G High alumina, induction furnace coil screed with good usability. 1 Hydraulic 1700

Slip Plane Material (Micanite/Mica):

Product Name Length / m Width / m Thickness / mm Form
Mica Sheet 1.2 /1.8 / 2.2 1.0 0.4 sheet
Mica Roll 12.5 1.0 0.3 roll
Mica Glass 20.0 1.0 0.4 roll
Combi-Roll 12.5 1.0 2.0 roll
Mica Foil 20.0 1.0 0.4 roll
Mica Weave 20.0 1.0 0.28 roll

Repair Materials

Product Name Product Description Bond Maximum Service Temperature / °C
Capram 90FZP High alumina plastic/plaster refractory. Chemical 1700
Capram 90 Chemically bonded, high alumina, plastic/plaster refractory Chemical 1800

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