Reform of Entrance Sealing Device of Large Vertical Reduction Annealing Furnace

摘要

Against the problem of roller surface nodular of Baotou sheet steel factory galvanized vertical reduction annealing furnace, products defects of dezincification, leak plating, scratches before galvanized and so on, and from these aspects of analysis including the vertical annealing furnace's working principle and structural characteristics, it was found that these main reasons causing this fault was that entry seal roller did not turn for high temperature deformation and condensed water of roller surface pollute strip steel, by improving the design and transformation of entry seal structure, the defects which caused by these reasons is solved, greatly improved the quality of the products, and there for provide the safeguard for the continuous and stable operation galvanized units.