Method for dynamically judging precision exception of winding drum of reeling machine

Abstract

A method for dynamically judging precision exception of a winding drum of a reeling machine aims to find out a degradation phenomenon of the winding drum of the reeling machine timely. The method comprises the steps as follows: starting a wrapper roller of the reeling machine, and listening whether the winding drum makes a periodic sound; observing the monitoring picture of a man-machine interface of an operating board of the reeling machine; during the zero-calibration process, listening to the contact sound of the wrapper roller and the winding drum of the reeling machine on site; after the zero-calibration process, starting the wrapper roller of the reeling machine quickly, adjusting the roll bite of the wrapper roller capable of programming an automatic controller to minus 1 mm, and listening to the contact sound of the winding drum and the wrapper roller; after the zero-calibration process, starting the wrapper roller of the reeling machine quickly, adjusting the roll bite of the wrapper roller capable of programming an automatic controller to 2 mm, listening to the contact sound of the winding drum and the wrapper roller, and observing the current intensity of the winding drum picture; judging the dynamic accuracy of the winding drum according to a velocity curve of the winding drum of the reeling machine, and reeling up the head part of a steel coil for a range of 30 m to observe the feedback speed of the winding drum and to judge whether the precision of the winding drum of the reeling machine is normal or not, and then an accident of product quality can be avoided.

Description

technical field [0001] The invention relates to a dynamic judging method for abnormal accuracy of a reel of a coiler. Background technique [0002] The coiler reel of the hot continuous rolling production line is the most critical equipment. The strip steel rolled out by the finishing mill is all wound on the coiler reel. The circumference surface of the reel is composed of 4 fan-shaped plates. The maximum linear speed of the drum is as high as 11.5m / s. Under normal circumstances, the fan-shaped plate will be thrown away by 0.5mm in the radial direction under the action of centrifugal force, and the amount of throwing away by the drum will reach 1.5--2mm in the later stage of use. The scrapping standard for coiler reels currently implemented is whether the reel production output reaches 700,000 tons or whether the reel has been on the machine for 6 months. If the reel of the coiler deteriorates during the operation within the above-mentioned standard time, it cannot be dete...

AI Technical Summary

Problems solved by technology

If the reel of the coiler deteriorates during the operation within the above-mentioned standard time, it cannot be detected in time, so that the deteriorated reel cannot be replaced in time, resulting in a production quality accident in the production process

For example, in Shanxi Taigang Stainless Steel Co., Ltd. Hot Rolling Plant in 2009, due to the poor precision of the coiler drum, the process could not be satisfied, and the head slipped and the direct waste products reached 330 tons. 1,500 tons of strip steel did not meet the requirements, resulting in the flattening of the 1,500 ton strip steel upper leveling unit