Wear and tear detection for molten metal containers - by equipping bricks from cladding with borehole and putting an insert in borehole made of different refractory than brick

摘要

Detecting wear and tear in vessels handling molten metal comprises equipping several bricks from the cladding with a borehole at the rear side which has a depth indicator and putting an insert in the borehole which is made from a different refractory from the brick itself. The insert material (pref. MgO contg. graphite) at above 1000 deg C has different light emitting and/or heat conducting properties from the surrounding firebrick material (e.g. dolomite based). The borehole and its geometric shape varies in its cross section along its length, its dia. of 30-100 mm. The insert is fixed in the borehole by mortar or adhesive, having a groove width of 0.5-2 mm. The changes in properties of the insert detect changes in the wear and tear. USE/ADVANTAGE - The system is simple and proportionately more accurate than state of the art, and the precautions taken do not need to be so great.