A method and device for preventing coiler scrap steel

Abstract

The invention discloses a method and device for preventing coiler steel scrap, at least including No. 1 and No. 2 coilers. During the coiling process, when No. 1 coiler is pre-selected, the steel strip passes through No. 1 side in turn. The guide plate and the No. 1 pinch roll enter the coiling position; when the No. 2 coiler is pre-selected, the steel strip enters the coiling position through the No. 1 side guide plate, the No. 1 pinch roll, the No. 2 side guide plate and the No. 2 pinch roll; The method includes the following operation steps: 1. The F1 frame of the finishing rolling mill bites the steel; 2. The F1 steel bite signal is uploaded to the host computer; 3. The host computer sends the target thickness and width of the strip to the coiling basic automation Computer; 4. Coiling basic automation The computer sets the initial opening of each side guide plate and the initial roll gap of each pinch roller according to the target thickness and width of the strip steel; , and selectively control and pre-select the coiler according to the detection situation, further control the change of the opening of each side guide plate, the roll gap of the nip steel pinch roll and the pressure control of the pinch roll, etc.

Description

technical field [0001] The invention relates to a hot-rolling process, in particular to a method and a device capable of reducing accidents in coiling steel scrap caused by turning up of the head of the strip or colliding with the guide plate and pulling out of the sheath. Background technique [0002] The coiler is an important equipment of the hot rolling production line, which is used to coil the hot rolled steel strip into steel coils. The coiler is located behind the finish rolling unit and is the last process of the hot rolling production line. See figure 1 The main equipment structure of the coiler is shown schematically. The strip steel 1 is transported from the finish rolling unit to the coiler unit by the roller table, and enters the No. 1 pinch roll 3 after being centered by the No. 1 side guide plate 2 . The main function of the pinch roller is to apply a certain clamping force to the strip steel at the head biting stage, and at the same time implement the firs...

AI Technical Summary

Problems solved by technology

[0006] 2. The head of the strip steel hits the guide plate and sets up

On the one hand, due to human negligence, sometimes the occurrence of abnormal belt threading cannot be judged; on the other hand, due to the limitation of observation conditions, sometimes the occurrence of abnormal belt threading can only be discovered very late, making it impossible to take timely recovery measures;

[0012] 2. Because waste saving measures need to be taken manually, when an abnormality occurs, when the operator’s response and disposal method are different, there will be situations where the scrap steel cannot be saved due to improper disposal

[0013] Due to the above shortcomings, the scrap steel caused by the strip head turning up and the strip head hitting the guide plate is a frequent production scrap steel accident.

[0014] In addition, although the head of the strip is turned up and the head of the strip hits the guide plate and is sheathed, it is a common phenomenon in the hot rolling production line, but currently there is no special detection technology and waste recovery technology in other hot rolling production lines

Images