Hot continuous rolling coiler parallel side guide plate control method

Abstract

The present invention discloses a hot continuous rolling coiler parallel side guide plate control method, wherein control design of the parallel side guide plate is divided into four stages with the control method, and different speeds are adopted at different stages to control gradual closure of the side guide plate, such that an opening degree of the side guide plate is reduced so as to achieve purposes of effective inner ring tower shape defect reduction and effective strip steel edge portion damage defect reduction.

Description

technical field [0001] The invention relates to a technology for controlling shape defects of hot-rolled strip steel plates, and more specifically, relates to a method for controlling parallel-side guide plates of a hot-rolling coiler. Background technique [0002] The technological process of the hot tandem rolling mill is roughly divided into heating, rough rolling, finishing rolling, coiling and other processes. Among them, see figure 1 As shown, the side guide device of the coiler is arranged on the roller table 1, which is arranged symmetrically on both sides of the transmission side and the operation side. 5 and valve frame 6 and other components. On the one hand, the main function of the side guide device is to center the head of the strip steel 7 before it bites into the pinch roller 8 to prevent tower-shaped defects; on the other hand, after the head of the strip steel bites into the pinch roller, Implement a certain clamping force on the strip steel to ensure th...

AI Technical Summary

Problems solved by technology

However, if the short-stroke opening 2L of the parallel side guide plate is too small, the steel head is more likely to be jammed.

The short-stroke opening 2L of the parallel side guide plate of a general hot-rolling coiler is ≥80mm, that is, one side L≥40mm. Although such an opening can avoid steel jamming accidents, it takes a long time to close, and the inner ring is tower-shaped. High defect rate

[0007] 2. Strip edge damage defects

But on the contrary, the short-stroke closing speed is too slow, and it is prone to inner ring tower defects

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