Method and device for controlling belt threading
A control method and strip threading technology, applied in the direction of rolling force/roll gap control, etc., can solve problems such as work roll damage, broken strip, improper operation, etc.
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Embodiment 1
[0036] This embodiment provides a control method for starting a car with a belt on, such as figure 1 shown, methods include:
[0037] S110, before threading the strip, flatten the lead of the strip;
[0038] In order to avoid the warping of the lead to affect the belt threading, before threading the strip, use a leveling tool to flatten the lead of the strip; make the lead meet the following flattening parameters: the warped length of the lead is 10-20mm, and the tilting angle is 2 ~7°, no major deformation within 2 to 4 meters of the lead is relatively flat.
[0039] S112, control the pressing rollers, strip guide plates and strip steel clamping parts of each finishing stand to be in a raised state, and control the roll gap of each finishing stand to be in an open state;
[0040] Before threading, control the pressing rollers, threading guides and strip clamping parts of each finishing stand to be in a raised state, and control the roll gap of each finishing stand to be in ...
Embodiment 2
[0054] This embodiment also provides a control device for putting on the belt and starting the car, such as figure 2 As shown, the device includes: a processing unit 21, a first control unit 22 and a second control unit 23; wherein,
[0055] In order to avoid the lifting of the lead to affect the threading, before threading the strip, the processing unit 21 is used to flatten the lead of the strip with a leveling tool; so that the lead meets the following smoothing parameters: the length of the lead warped is 10-20mm , The tilting angle is 2 to 7°, and the lead is relatively flat without large deformation within 2 to 4 meters.
[0056] Before threading, the first control unit 22 is used to control the pressing rollers, threading guides and strip clamping parts of each finishing stand to be in a raised state, and to control the roll gap of each finishing stand to be in an open state; Place it at the entrance of the first finishing stand and start threading. During the strapp...
Embodiment 3
[0068] In practical application, when the strip steel with a thickness of 5mm, a width of 1007mm and a yield strength of 552Mpa is put on and started, the specific implementation is as follows:
[0069] In order to avoid the lifting of the lead to affect the belt threading, before threading the strip, use a leveling tool to flatten the lead of the strip; the length of the lead is 11mm, the tilting angle is 5°, and there is no comparison within 2 to 4 meters of the lead. Large deformation is relatively flat.
[0070] Before threading, control the pressing rollers, threading guides and strip clamping parts of each finishing stand to be in a raised state, and control the roll gap of each finishing stand to be in an open state; place the lead on the first finishing stand. The entrance begins to wear the belt. During the strapping process, the strapping situation of the leader needs to be tracked, so that the strapping can be adjusted in time.
[0071] After the tape head comes o...
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