Method for circularly controlling reeling hydraulic side guide pressure position of hot tandem rolling special steel

The invention relates to a method for circularly controlling a reeling hydraulic side guide pressure position of hot tandem rolling special steel, aiming to improve the edge quality of band steel. The method comprises the following steps: when a hot metal detector detects that the load of the band steel and reel band steel of special steel, i.e. reeling stainless steel, silicon steel, and the like, is greater than a target value, the band steel is judged to already enter a reeling machine, and then reeling hydraulic side guide control is carried out on the reeling hydraulic side guide pressure position to be circularly controlled, wherein the target value is generally 35 percent of the preset moment of the band steel; the reeling hydraulic side guide control which is firstly carried out is original control and is switched into position control after first alternate circulation time, and then the pressure and position control is realized according to the alternate circulation time tillthe hot metal detector completely detects the band steel and closes the alternate circulation control; the alternate circulation time is generally 1-10 seconds, and the pressure and position switching control is finally realized according to the debugged circulation time.