An automatic device for firing a heating furnace

Abstract

The invention discloses a firing automation device for a heating furnace, which comprises a main controller, a first control valve, a second control valve, a circulator and a timer, and the main controller is connected with the first control valve and the second control valve , and the main controller is equipped with a timer and a circulator inside, the first control valve is set on the east side of the heating furnace, the second control valve is set on the west side of the heating furnace, the circulator is connected with the main controller and the second A connection is constructed between a control valve and a second control valve, the heating time of the west side of the heating furnace controlled by the second control valve is increased by 80s compared with the heating time of the east side of the heating furnace controlled by the first control valve, so that the temperature of the west side of the heating furnace is Compared with the temperature on the east side of the heating furnace, it is 50-80°C higher. In the present invention, by increasing the working times of the second control valve on the west side of the heating furnace, the temperature on the west side of the heating furnace is higher than the combustion temperature on the east side of the heating furnace, so as to avoid uneven heating of the second half of the billet to produce black tail steel.

Description

technical field [0001] The invention relates to the technical field of steelmaking heating systems, in particular to an automatic device for firing a heating furnace. Background technique [0002] In the process of heating the steel billet, the existing heating furnace starts to automatically distribute the east / west combustion cycles of 80 seconds at the setting of 80 seconds. Due to the pass modification, the current production of φ6.0 wire rod continuous rolling mill has a slow line speed, resulting in black tail steel formed due to the temperature drop when the second half of the billet enters the rolling mill. Burning bearings, broken rolls and even reducers of the rolling mill will occur after long-term operation. Major equipment accidents such as large box damage affect the normal production rhythm. It is necessary to increase the combustion time of the heating furnace to ensure that the billet temperature can meet the rolling requirements, but the consequences are in...

AI Technical Summary

Problems solved by technology

Due to the pass modification, the current production of φ6.0 wire rod continuous rolling mill has a slow line speed, resulting in black tail steel formed due to the temperature drop when the second half of the billet enters the rolling mill. Burning bearings, broken rolls and even reducers of the rolling mill will occur after long-term operation. Major equipment accidents such as large box damage affect the normal production rhythm. It is necessary to increase the combustion time of the heating furnace to ensure that the billet temperature can meet the rolling requirements, but the consequences are increased gas consumption per ton of steel and increased process costs.

[0003] The existing heating furnace automation program cannot solve the above-mentioned problems according to the actual heating situation. If the heating time is increased, the problem of uneven heating at the tail of the billet can be solved, but it will greatly increase the fuel consumption of the heating furnace and increase the operation of the enterprise. cost