Method and system to control quality in cold rolling system

Abstract

The invention discloses a method and a system to control quality in a cold rolling system capable of preventing frequent chatter masks and hot cracks in the continuous cold rolling process. Meanwhile, the distortion and cutting of steel plates due to the roughness difference between the upper and lower surfaces of steel plates is also prevented. More specifically, the invention discloses a system and a method for detecting the quality abnormality in a cold rolling system, wherein a vibration sensor, a torque sensor, a temperature sensor and a current sensor are arranged inside a rolling mill. The information measured by the above sensors are used for detecting signals which cause defects, which are also used for minimize the defect ratio of the steel plates being rolled.

Description

[0001] This application claims priority and benefit from Korean Patent Application No. 10-2009-0127394 filed in the Korean Intellectual Property Office on December 18, 2009, the entire contents of which are hereby incorporated by reference. technical field [0002] The present invention relates to a method and system for detecting quality abnormalities in a high-speed cold rolling process, which detect and prevent frequent occurrence in continuous cold rolling processes due to chatter marks, Distortion or shearing of the steel plate caused by heat streaks and roughness differences between the upper and lower surfaces of the steel plate. More particularly, the present invention relates to a method and system for detecting quality abnormalities in a cold rolling process, wherein vibration sensors, torque sensors, temperature sensors, and current sensors are installed in a rolling mill, and information measured by the respective sensors is used to check The signal that causes the...

AI Technical Summary

Problems solved by technology

However, in the continuous cold rolling system in which rolling is performed using four to six rolls arranged in series, it is difficult to identify the location where a defect occurs, and therefore, the defect cannot be solved immediately

In addition, all the traditional methods are expensive to apply and it is difficult to apply these methods to one of the continuous processes

[0016] In addition, even with all the above methods, damage to the steel plate, such as cutting the plate, makes it difficult to predict and prevent the occurrence of defects in the rolling process in advance

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