Fast detection device and method for position of lower step liner of rolling mill

Abstract

The invention provides a fast detection device and method for the position of a lower step liner of a rolling mill. The device comprises a ruler rod and a fixing pipe clamp, wherein the front end of the ruler rod is connected with the fixing pipe clamp, and a plurality of stage reading parts are uniformly arranged on the ruler rod at intervals; the number of the stage reading parts corresponds to the number of stages of the lower step liner, and the number of stages of the lower step liner is determined by observing the number of the stage reading parts. The fast detection device is low in manufacture cost, is suitable for the bad environment of sites, and is easily maintained and used. The method is easily popularized.

Description

technical field [0001] The invention belongs to the technical field of a step pad under a rolling mill in a hot rolling mill, and in particular relates to a device and method for quickly detecting the position of a step pad under a rolling mill. Background technique [0002] The premise of hot-rolled strip rolling is to ensure that the rolling horizontal lines of each stand must be at the same level, but with the use of rolls (working rolls and backup rolls), it will inevitably lead to loss and replacement of rolls, which requires The height difference of the rolling line is compensated by adjusting the position of the lower step pad to ensure that the rolling level remains unchanged. [0003] The existing method for determining the position of the lower step pad of the rolling mill is to calculate the feedback value of the position sensor built in the telescopic oil cylinder of the lower step pad. Once the position sensor of the lower step pad fails, the actual position of...

AI Technical Summary

Problems solved by technology

Once the position sensor of the lower step pad fails, the actual position of the step pad cannot be fed back to determine the height of the rolling line, and the finishing mill does not have the conditions for rolling steel

However, it takes a long time to replace the position sensor. Since the oil cylinder is filled with 210bar high-pressure hydraulic oil during production, the production must be interrupted and the valve should be closed to release pressure before replacing the position sensor of the lower step pad to ensure personal safety. The equipment is safe, and the whole process of replacing the sensor takes at least 45 minutes to complete

This will inevitably lead to the interruption of the continuous casting machine in the previous process and the interruption of the production of the rolling line

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