Slab Heating Control Method and System for Steel Rolling Heating Furnace
A slab heating and control system technology, which is applied in heat treatment process control, manufacturing tools, heat treatment equipment, etc., can solve the problems that affect the control accuracy of the steel rolling process, the temperature difference of the section of the slab out of the furnace increases, and the burning loss of the heating furnace increases. , to achieve stable and reliable heating quality, reduce oxidation burning loss, and reduce gas consumption
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Embodiment 1
[0054] During the production of the heating furnace, the surface temperature of the first slab 1 is measured by an infrared thermometer installed at the steel loading end of the heating furnace, and the furnace entering temperature is 30° C., which is passed to the control unit. The steel loading machine loads the first slab 1 into the heat recovery section 5 of the heating furnace. The laser induction sensor detects the furnace loading signal of the first slab 1 and transmits it to the control unit, and at the same time, the photoelectric sensor transmits the step information of the walking beam to the control unit, and the control unit tracks the position of the first slab 1 in the furnace, In addition, the real-time temperature field of the first slab 1 is updated and calculated every 1 minute in combination with the furnace temperature, heating time and furnace temperature at the furnace position. The walking beam 4 drives the first slab 1 loaded into the heating furnace t...
Embodiment 2
[0057] During the production of the heating furnace, the steel loading machine loads the first slab 1 with a furnace inlet temperature of 700°C into the heat recovery section 5 of the furnace, and then loads the second slab 2 with a furnace inlet temperature of 30°C into the first slab Behind the slab 1, the second slab 2 is loaded into the third slab 3 whose furnace temperature is 500°C. The control unit tracks each slab loaded into the heating furnace, and refreshes and calculates the real-time temperature field of each slab every 3 minutes. The walking beam 4 steps each slab loaded into the furnace toward the tapping direction of the heating furnace. In this way, the slabs mixed with cold and hot at different temperatures are successively loaded into the heating furnace for heating, until they are soaked in the soaking section of the heating furnace and then rolled. The gap remains the same.
[0058] The slab steel to be heated is Q235B. The operating regulations stipulat...
Embodiment 3
[0060] During the production of the heating furnace, the steel loading machine loads the first slab 1 with a furnace temperature of 500°C into the heat recovery section 5 of the heating furnace, and then loads the second slab 2 with a furnace temperature of 30°C into the first slab Behind the slab 1, the second slab 2 is loaded into the third slab 3 whose furnace temperature is 700°C. The control unit tracks each slab loaded into the heating furnace, and refreshes and calculates the real-time temperature field of each slab every 2 minutes. The walking beam 4 steps each slab loaded into the furnace toward the tapping direction of the heating furnace. In this way, the slabs mixed with cold and hot at different temperatures are successively loaded into the heating furnace for heating, until they are soaked in the soaking section of the heating furnace and then rolled. The gap remains the same.
[0061]The slab steel to be heated is Q235B. The operating regulations stipulate tha...
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