Cast in Aluminium Band Heaters
IH Tubular heaters can be cast in aluminium, bronze, brass to give a unit of long life, repeatability of product quality and versatility in design.

The mass of metal surrounding the cast in heater provides a heat-sink of excellent thermal conductivity . This results in high wattage capacity with overall low watt-density, prolong heater life , uniform heat transfer, stable and high temperatures that can be precisely controlled and increased resistance to thermal and mechanical shock.

Versatility
These units are used extensively on machinery that operate almost non-stop eg,. extruders, injection moulders, heat sealers, hot plates, platens, dies roller heating etc., because of their durability and their maintenance free life

Cast in Bands
The cast in aluminium band heater consists of a metal sheathed, mineral insulated tubular element ,formed to shape and cast into aluminium using a pattern of required dimensions with allowances for machining. The bore is then machined to give a perfect fit between the heater and the heated part. normally used on plastic extruders, injection and blow moulding machines, these elements have many advantages. They are robust , give even heat distribution, and allow higher wattage concentrations.

Cast in Rings, Bars and Plates
Offer greater versatility in design, minimum machining on unusual shaped application. eg. Hot plates, sealing bars, etc.,

Application
When inserted into a hollow bolt, the transferred heat causes the bolt to expand and increase in length, allowing the nut to be further wrenched tightened.

When the heater is removed the bolt cools and contracts , drawing down further the previously tightened nut. the higher the wattage the faster the expansion. Used widely on studs and holding bolts on large equipments such as steam generators, turbines and pressure vessels.

Construction
Sheathed in stainless steel the heaters constructed having a recommended minimum 100 mm cold zone separating the heated zone from the junction box and handle. The element is of the compacted variety, allowing high watts density and long service life.