Static calibration method for wrapper roller of hot-rolled strip steel coiler

Abstract

The invention discloses a static calibration method for wrapper rollers of a hot-rolled strip steel coiling machine, which comprises the following steps of: adopting static pressure calibration, pressing the wrapper rollers one by one by an operator in a static state of a mandrel and the wrapper rollers, confirming whether the lower roller surface of each wrapper roller avoids a seam of an umbrella-shaped plate or not, and after confirming that the lower roller surface does not keep away from the seam of the umbrella-shaped plate; and when the wrapper roller is calibrated, an automation worker is notified to cancel the condition option of rotating a mandrel drum and the wrapper roller in the wrapper roller automatic calibration process, 50 KN calibration reference force is changed into 30 KN, then wrapper roller automatic calibration operation is started, and other calibration conditions are the same as those of an original program. The method aims at avoiding the phenomena of calibration force fluctuation and roll gap distortion caused by calibration when the wrapper roll of the hot-rolled strip steel coiler rotates. The phenomenon of'roller hitting 'caused by insufficient pressing force of the head of the strip steel or overlarge pressing force is avoided, indentation of the head of the strip steel is effectively avoided, it is guaranteed that the wrapper roller compresses the head of the strip steel, and a series of problems such as'tower-shaped' coils caused by insufficient pressing force of the wrapper roller and'core collapse 'caused by over-loose strip steel coiling are solved.

Description

technical field [0001] The invention relates to a static calibration method for coiling auxiliary rolls of a hot-rolled strip steel coiler. Background technique [0002] The coiler is an important equipment of the hot rolling production line, which is used to coil the rolled finished hot rolled strip into steel coils. The coiler is located behind the laminar flow cooling roller table, which is the last process of the hot rolling production line. The coiler mainly includes main equipment such as roller table, side guide plate, pinch roller, three auxiliary rollers and reel, such as figure 1 shown. [0003] The role of the winding-assisting roller is to help bend the strip and make the strip tightly wound on the reel. The reel is the core equipment of the coiler. After the strip is wound, a forward tension is applied to it to ensure the quality of the coil. [0004] When the roll gap deviation of the winding-assisting roller is large, the winding-assisting roller will not ...

AI Technical Summary

Problems solved by technology

[0007] At the same time, the wear gap of the umbrella plate of the reel and the wear gap of the connecting pins and bushings of the roll-up rollers, along with the rotation during the calibration process, continuously interferes with the collection of the position and pressure of the roll-up rolls during the calibration process, directly affecting the roll gap Calibration accuracy

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