ISOMIL - Mineral Insulated Cables
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Processing of Mineral Insulated Cables

Tube Wire Insulation material
 
Cleaning Straightening Drying
 
 
Hot filling
To avoid humidity being absorbed by the hygroscopic insulation material the components are dried thoroughly and filled at an elevated temperature.
 
Swaging & Rolling
Swaging is the optimum forming method for certain types of our mineral insulated cables, naturally special equipment must be employed. The inner conductors are best protected when processed on a continuous calibre mill. However, the tolerances generally required for the sheath wall limit the use of this method to a few special designs.
 
Annealing
The production of a flawless mineral insulated cable right down to the smallest dimensions requires a considerable number of intermediate annealing processes.
 
Pickling
Pickling removes all discolouration which occurs in spite of the protective gas used during the annealing process.
 
Drawing
Pickling removes all discolouration which occurs in spite of the protective gas used during the annealing process.
 
Final Annealing
Final annealing is conducted under protective gas in a continuous process to attain a smooth, bright surface.
 
Final Product
Each drawn batch undergoes quality assurance tests - as cable coils of long length - before dispatch.
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