Method and device for preventing coiling machine steel scrap

Abstract

The invention discloses a method and device for preventing coiling machine steel scrap. The device at least comprises a first coiling machine and a second coiling machine. In the steel strip coiling process, when the first coiling machine is preselected, a steel strip sequentially passes through a first side guide plate and a first pinch roll to enter a coiling position; and when the second coiling machine is preselected, the steel strip sequentially passes through the first side guide plate, the first pinch roll, a second side guide plate and a second pinch roll to enter the coiling position.The method comprises the following operation steps that 1, an F1 rack of a finishing mill group bites steel; 2, an F1 steel biting signal is uploaded to an upper computer; 3, the upper computer issues the target thickness and the target width of strip steel to a coiling basic automatic computer; and 4, the coiling basic automatic computer sets the initial opening degree of each side guide plate and the initial roll gap of each pinch roll according to the target thickness and the target width of the strip steel, and then the opening degree change of each side guide plate, the roll gap of the steel biting pinch roll, the pinch roll pressure control and the like are further controlled by detecting the strip steel head turning-up and sleeve lifting conditions and selectively controlling and preselecting the coiling machines according to the detection conditions.

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

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