Using gas-thermal coatings to reduce the working surface of narrow mold walls

摘要

Statistical analysis of data on CCM operation at Severstal between 1999 and 2002 demonstrates the influence of the cross section of continuous-cast slabs and the number of the CCM on the mold life. It is found that restoring wear locations on the mold's working surface by applying a gas-thermal coating is expedient after 70-80 melts, when the probability of malfunctioning due to wear is becoming significant. A technology has been developed for restoring the working surfaces by the application of gas-thermal coatings to wear locations on the narrow walls, without dismantling the mold. This increases mold life by 30-35 melts or more.