Hoben International has supplied mica sheets for over 20 years to the British foundry industry as an asbestos free electrical and thermal insulating material.

A new range of mica sheets is now available from Hoben International which gives the following benefits to foundries with coreless induction furnaces. To provide electrical insulation between the melt and the induction coil by serving as a barrier against leakage currents and flashover. To provide a final safety barrier against metal penetration should the refractory material become cracked or damaged. To provide a slip plane between the crucible and the coil protecting the coil from expansion caused by the crucible. To control heat transmission and minimise heat loss between the melt and the coil. Hoben Mica Sheets have excellent flexibility, elasticity, durability, dielectrical strength and have the ability to withstand very high temperatures. Hoben Mica Sheets prevent over-sintering of the refractory lining and act as a protective barrier during the sintering of the crucible obtained by the introduction of molten metal.