ROLLER BELT OF CONTINUOUS FURNACE

摘要

metallurgical heat- power engineering; continuous-type heating furnaces with roller hearth for heat treatment of plates and sheets. SUBSTANCE: roller belt of continuous furnace includes rollers arranged in rows whose barrel are located in working chamber and journals are brought out of its through openings at clearance and seals of clearances. Seals are made in form of blocks located one above another symmetrically along axis of roller belt; each block consists of metal cassette with seal secured on it; seal is made from soft refractory ceramic fibrous material; both lateral surfaces are provided with concentric cylindrical recesses embracing the quarter of circle of edges of barrels and journals of adjacent rollers placed in them. Provision is made for version of making the belt whose seal is multi-layer for facilitating construction at retained thermal and physical parameters; refractory properties and density of material of layers are increased in way from metal cassette towards working chamber. Besides that, cylindrical surfaces of recesses may be provided with flexible ceramic fibrous gaskets secured on them to enhance maintainability. EFFECT: increased service life; enhanced tightness and maintainability. 3 cl, 5 dwg