Feedback control method for high-precision purging on the surface of hot-rolled laminar low-temperature strip steel
A feedback control, high-precision technology, applied in temperature control, metal rolling, metal rolling, etc., can solve problems such as judgment control affecting strip temperature, increased purging energy consumption, temperature map defect, etc., to improve competition. power, lower energy consumption and lower production costs
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[0033] Such as image 3 , 4 As shown, a high-precision purge feedback control method on the surface of a hot-rolled laminar flow low-temperature strip includes the following steps:
[0034] S1. Divide the nozzles of the surface cleaning device 4 into several groups, define the blowing intensity Q, and the blowing intensity Q=the number of opened nozzle groups / the total number of nozzle groups, and the gas supply pipeline of each group of nozzles is routed by the blowing controller 7 control opening and closing; in the present invention, according to the actual situation of the field equipment, usually a row of nozzles on the width direction of the strip 1 is defined as a group, and a total of 3 to 10 rows of nozzles are arranged at equal intervals on the surface cleaning device, that is, a total of 3 to 10 groups of nozzle groups; in the present embodiment, there are 10 groups of nozzle groups;
[0035] S2. Establish a steel type purging characteristic database, and a one-to...
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