| 摘要 |
PURPOSE: A door apparatus for a heating furnace is provided to prevent the edge part of a material from being super-cooled when the material is placed adjacent to an extraction door of the furnace for a long time. CONSTITUTION: A door apparatus for a heating furnace includes a door part (210), a burner part (220), and a pipeline part (230). The door part is installed across an extraction port of the furnace. The burner part is installed at the door part and jets and ignites combustion air and fuel inside the furnace. The pipeline part feeds the combustion air and the fuel to the burner part. The door part includes a refractory part, an inner frame part, and an outer frame part. One side of the burner part is connected to the panel-shaped refractory part. The other side of the burner part is connected to the inner frame part. The outer frame part prevents the thermal deformation of a door frame part. |
