Method for analysis and on-line monitoring of vibration performance of band steel in continuous annealing unit furnace

Abstract

The invention discloses a method for analysis and on-line monitoring of the vibration performance of band steel in a continuous annealing unit furnace, belonging to the technical filed of annealing. The invention comprises the following processing steps: collecting technological parameters of key equipment of a continuous annealing unit; collecting the width, thickness, type of steel and signal sampling period of the continuous unit in annealing process; selecting the time period required by the analysis of vibration performance of the band steel in the furnace; utilizing ibaAnalyzer software to open a PDA database; exporting actual values of tension at each time in the sub-processes, such as preheating, heating, soaking, slow cooling, splat cooling, aging, finally cooling and the like in the time period; calling a vibration performance analysis module to output the vibration frequency and vibration power of each sub-process; presetting a critical power allowance value of vibration performance; and comparing the value of the maximal power of each sub-process with that of the critical power, and monitoring whether harmful vibration exists to finish analysis and on-line monitoring on the vibration performance of the band steel in the continuous annealing unit furnace. The invention has the advantage of being capable of timely and quantitatively analyzing main frequency, energy and other vibration performance parameters of the band steel inside a furnace, realizing on-line monitoring and taking economic benefit for enterprises.

Description

technical field The invention belongs to the technical field of continuous annealing, and in particular relates to a vibration characteristic analysis and online monitoring method of strip steel in a furnace of a continuous annealing unit. Background technique In recent years, due to the huge demand of household appliances, automobiles, electronics, aerospace and other industries, the production of strips has developed rapidly. As most strip users shift from low-end to high-end, higher and higher requirements are put forward for the quality of strip steel. The development and production of high-grade strip has become an important symbol to measure the production level of iron and steel enterprises. The continuous annealing process is an important process in the production process of high-grade strips. Its main function is to improve the mechanical properties of the strip and eliminate the work hardening of the strip after cold rolling. Figure 1 is a schematic diagram of th...

AI Technical Summary

Problems solved by technology

However, since the vibration of the furnace roll is very different from the vibration of the strip steel, the furnace roll does not necessarily vibrate when the strip steel vibrates, so the method of analyzing the vibration of the steel strip in the furnace by testing the vibration of the furnace roll is not effective

In particular, since the test of furnace roller vibration is carried out through external equipment, timely monitoring cannot be realized, and what is obtained is only the vibration of a specific steel coil within a specific period of time, which is of little reference value

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