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营口中板厂轧钢加热炉的烟道长24米、宽1.5米,属地上烟道,过去一直是用小块粘土砖拼砌,其结构为拱顶,若用180°拱顶时,易断裂、漏风;若用60°拱顶时,则产生很大的侧向力,需用金属立柱、拱脚架、钢拉杆等结构,随着温度升降变化,立柱等金属结构件会变形,使拱顶破坏、漏风。另外由于烟道很长,采用重质粘土砖砌筑,导热系数很大,并不可避免地产生大量砌缝,造成散热损失大,浪费了大量能源,为此提出采用隔热性能较好的轻质浇注料预制成平板状炯道盖板。
Yingkou Medium Plate Plant steel rolling furnace flue 24 meters long and 1.5 meters wide, is an on the ground flue, in the past has been built with small pieces of clay brick, the structure of the vault, if 180 ° vault, easy to break , Leakage; if 60 ° vault, it produces a great lateral force, the need to use metal columns, arch tripod, steel rod and other structures, with the temperature changes, column and other metal structures will be deformed, so that the arch Top damage, air leakage. In addition, because the flue is very long, the use of heavy clay brick masonry, a large thermal conductivity, and inevitably produce a large number of cracks, resulting in heat loss, wasting a lot of energy, for which the proposed insulation with better light Quality castable prefabricated into flat-shaped jiong road cover.