Method for calculating and locating strip steel head of automatic stepping system of hot continuous rolling coiling machine

Abstract

The embodiment of the invention provides a method for calculating and locating the strip steel head of an automatic stepping system of a hot continuous rolling coiling machine, comprising the following steps of: detecting whether the strip steel enters a pinch roll, wherein when the strip steel is detected to enter the pinch roll, the automatic stepping process begins, the head position of the strip steel is calculated according to the speed of a lower pinch roll; detecting the tension of a main drum, if the tension of the main drum is not established, the head position of the strip steel is continuously calculated according to the speed of a lower pinch roll, if the tension of the main drum is established, the head position of the strip steel is continuously calculated by using the momentary position of the strip steel head at the main drum at the tension establishing moment as a start point; detecting whether the set wrapping number of turns is finished, if the set wrapping number of turns is not finished, the head position of the strip steel is continuously calculated by using the head position of the strip steel at the tension establishing moment as a start point; if the set wrapping number of turns is finished, the automatic stepping process stops and the calculation for the head position of the strip steel is finished. The invention can effectively overcome the defects that an on-site hot metal detector and an optoelectronic detecting element are subject to various on-site interferences.

Description

technical field [0001] The invention relates to a method for calculating the positioning of the strip head of an automatic stepping system of a hot continuous rolling coiler. Background technique [0002] In the production process of modern hot-rolled strip steel, when the strip steel head passes through the final stand of the finishing rolling area and is thrown away, it is cooled by laminar flow to reach the process temperature, and the strip steel needs to be coiled continuously by a coiler. The practice of steel rolling production shows that the production status of the coiler directly affects the production capacity of the rolling mill operation line and the final quality of the finished strip, and affects the smooth progress of the subsequent process. The coiler of the hot rolling production line is a complex system integrating machinery, electricity, pneumatics and hydraulics, and works in harsh environments such as shock vibration, high temperature, water and scale. ...

AI Technical Summary

Problems solved by technology

At this time, the upper and lower pinch rollers are running in the power generation state. During the conversion process, due to the influence of factors such as the material of the strip steel, the oil on the surface of the pinch rollers, and the pressure setting of the pinch rollers is too small, a certain relative slip will be formed between the two. Displacement, resulting in an error in the calculation of the actual position, will also cause a mismatch between the stepping action of the coiling roll and the actual position of the strip head, which will easily cause excessive impact on the equipment or coiling failure of the strip head

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