CONTINUOUS HEATING FURNACE FOR METALLIC STRIP

摘要

PURPOSE:To measure the temp. of a strip at the discharging port of a heating furnace with good accuracy without receiving the influence of the heat radiated from the inside of the furnace by providing a bill-shaped enclosing wall in proximity to the metallic strip near the outlet of said furnace and providing a sensor for measuring the temp. of the material on the top of the enclosing wall. CONSTITUTION:A bill-shaped enclsoing wall 10 enclosing a strip 2 moving near an outlet 8 of a continuous heating furnace 7 of a quaternary type is extensively provided to a horizontally long aperture 9 in proximity to said strip 2. A sensor 1 for measuring the temp. of the strip is installed on the top 11 of the wall 10 by selecting the distance S at which the energy radiated from the inside wall of the furnace 7 and the energy of the luminous flame of a burner hardly arrive. The space between the top of the wall 10 and the bottom is more preferably set at <=500mm. within the range where the passage of the strip 2 is not interfered. An improvement in the accuracy in measuring the temp. of the strip material 2 at the discharging port of the furnace is expected by such continuous heating furnace 7.