The selection, construction and effects of material are analysed, and the saving energy effect of multicrystal mullite fibre on rolling heating furnace is calculated.With thormal theory.

• 本文对材料的选用、施工、使用效果进行了分析，运用传热学原理计算出了多晶莫来石纤维在轧钢加热炉上的节能效果。