MLC-V235 Continuous Casting Mold Level Control

4 On-site operation display control panel;

5 digital actuator;

The control principle of the system

The system can be set to four control modes: automatic, semi-automatic, manual and motor clutch. The automatic mode is the closed-loop control system of the molten steel level, and control the opening of the stopper by the digital actuator; the semi-automatic mode uses opening degree setter and digital actuator to set the opening of the stopper manually; the manual mode is to open and close the button directly to control the opening of the stopper; the motor clutch mode is quickly changed from any of the above control methods to manual stopper operation.

The functions of the system also include: display and record of molten steel level, nozzle opening and casting speed; setting of molten steel level and nozzle opening; alarm of molten steel level at limit value etc.

In addition to taking the detection of molten steel level as the main feedback signal of the control system, the control system also considers various interference factors that have an impact on the level control. These interference factors include:

1. The influence of the change of the flow characteristics on the control system after the melt loss of the stopper

2. The influence of the weight change of molten steel in the tundish on the control system

3. The influence of the change of the casting speed of the continuous casting machine on the control system

4. The influence of the mold width change (the mold width is adjustable) on the control system

5. The influence of the vibration frequency and amplitude of the mold on the molten steel level gauge

The fIn order to overcome these disturbances, the mold. A. A of thechange compensation of casting speedcastingIn order to reduce the frequent action of the stopper, the system adopts the intergarting time change of the controller, and automatically selects a longer intergarting time when the molten steel level fluctuates light And the system will choose a shorter intergrating time when greatly.  Igauge, which can overcomemold.