SBS Refractory Service
Lining and materials2 min

Adhesion decides: why substrate preparation determines service life

The most expensive refractory material will not hold if the substrate is not right. Four steps that nobody sees in the end — and that determine the service life of the entire lining.

Fitter in protective clothing stripping out and cleaning the old lining inside the unit

In every repair relining we deliberately invest time in a step that nobody sees in the end: cleaning and preparing the surface onto which the lining is applied. This step determines adhesion — and with it the service life of the entire lining.

What our installation teams look out for

  • Thorough strip-out: infiltrated old material is not left in place. Whatever is saturated will not carry load and later comes away together with the new lining.
  • Complete removal of deposits and slag: especially in flue gas passes and ducts, the actual condition can only be assessed after blasting — which frequently changes the scope of the repair.
  • Checking and renewing the anchoring: anchors are wearing parts. No new lining will hold on scaled old material.
  • Dust-free handover: fine dust on the contact surface acts as a separating layer — vacuum it off rather than blowing it away, then shutter and cast.

These hours are firmly scheduled into the sequence — even when every hour counts in the shutdown window. They are the cheapest contribution to service life that an overhaul can make.

At a glance
4
work steps before every complete relining
Firmly scheduled
share of preparation in the overhaul sequence

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