| 摘要 |
PURPOSE:To minimize the quantity of heat loss in a heating furnace for billets for rolling by taking the information on the atmosphere temp. in each zone of the heating furnace and the information of the pressure in the furnace into an electronic computer, calculating trially the blowing rate of combustion gas and the flow rate of intruding air and operating a flue damper. CONSTITUTION:The atmosphere temp. in each zone of a heating furnace 1 for billets for rolling is measured with an atmosphere thermometer 4 and the pressure in the furnace is measured with a furnace pressure gage 5, then the information on the respective actually measured values is taken into an electronic computer 8 in the stage of heating steel materials 3 to a prescribed temp. by burners 2 in the furnace 1. The blowing rate of combustion gas and the flow rate of intruding air are trial-calculated in the computer 8 and a flue damper 7 is operated to minimize the quantity of the heat loss owing to the blowing out and the intruding air by which the pressure in the furnace is controlled. |
