Automatic program design for heating furnace firing

Abstract

The invention discloses an automatic program design for heating furnace firing. The automatic program design comprises a main controller, a first control valve, a second control valve, a circulator and a timer, wherein the main controller is connected with the first control valve and the second control valve, and the timer and the circulator are mounted inside the main controller; the first control valve is arranged on the east side of a heating furnace; the second control valve is arranged on the west side of the heating furnace; the circulator and the main controller are connected with the first control valve and the second control valve in a constructed mode; and the heating time of the west side of the heating furnace controlled by the second control valve is increased by 80 s comparedwith 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 higher by 50-80 DEG C comparedwith the temperature of the east side of the heating furnace. According to the automatic program design for heating furnace firing, the working frequency of the second control valve on the west side of the heating furnace is improved, so that the temperature on the west side of the heating furnace is higher than the combustion temperature on the east side of the heating furnace, and black tailingsteel caused by uneven heating of the rear half section of a billet is avoided.

Description

technical field [0001] The invention relates to the technical field of steelmaking heating systems, in particular to an automatic program design 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 consequence...

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