At a turbine maintenance site,

one issue engineers fear the most —

the upper casing stays stable,

while the lower casing overheats.

When the temperature difference exceeds forty-five degrees Celsius,

bearing loads increase,

efficiency drops,

and metal fatigue cracks can start to appear.

Often, the problem isn’t with the machine itself,

but with the insulation — asbestos.

On the lower casing, gravity causes it to sag,

leaving gaps, trapping dust,

and creating uneven heat insulation.

Now, more projects are replacing asbestos

with water-based nano insulation and anti-corrosion coatings.

Built with glass and ceramic hollow microspheres,

a 5-millimeter layer can sharply reduce surface temperature,

while providing both thermal and corrosion protection.

No wrapping, no dust, no delamination —

a lighter, safer approach

to thermal management for turbines.