Method for measuring temperature of hearth of annealing furnace

Abstract

The invention discloses a method for measuring the temperature of a hearth of an annealing furnace, and belongs to the technical field of rolling technologies. The method comprises the steps that datainformation in a control area is collected, wherein the data information comprises first data T1 of a first thermocouple, second data T2 of a second thermocouple, third data T3 of a third thermocouple and fourth data T4 of a fourth thermocouple; a first average value T is calculated according to a first coefficient n (i=1,2,3,4) of each thermocouple; a second coefficient m (i=1,2,3,4) of each thermocouple is obtained according to the first average value T; whether the first data T1, the second data T2, the third data T3 and the fourth data T4 meet first preset conditions or not is judged sequentially; and a second average value T<PV> is obtained according to judgment results and the second coefficient m. The technical effects that the accuracy of a thermocouple temperature data source and the uniformity of the furnace temperature of the annealing furnace are ensured, and accurate temperature control is conducted on strip steel are achieved.

Description

technical field [0001] The invention relates to the technical field of rolling technology, in particular to a method for measuring the temperature of an annealing furnace hearth. Background technique [0002] The temperature control system of the annealing furnace performs precise heating, heat preservation and cooling control on the strip steel according to the curve set by the process requirements, and ensures the uniformity of the furnace temperature of the annealing furnace, and the uniformity of the furnace temperature directly determines the quality of the product. Therefore, the accuracy of the furnace thermocouple temperature data source is the key to the control process. [0003] However, the current measurement of the annealing furnace temperature signal is affected by various factors such as on-site electromagnetic interference, coupled with the temperature drift of the thermocouple itself, etc., which may cause instantaneous unreal fluctuations in the measurement...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for measuring the temperature of the annealing furnace, which is used to solve various factors such as on-site electromagnetic interference in the measurement of the temperature signal of the annealing furnace in the prior art. Stable technical problems, achieved the technical effect of ensuring the accuracy of the thermocouple temperature data source and the uniformity of the furnace temperature of the annealing furnace, and accurately controlling the temperature rise, heat preservation and temperature drop of the strip steel

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