Strip Cold Rolling Mill AGC System: Buyer Questions Answered

AGC, or Automatic Gauge Control, carries out precise control of strip gauge during rolling. Its functions include roll opening position closed-loop control, strip gauge closed-loop control, roll gap pressure and rolling force setting, roll gap zeroing, synchronized roll movement on both sides, roll gap difference control, strip correction control, separate force setting and alarms, and the collection and display of rolling parameters.

The HAGC configuration combines hydraulic screwdown AGC, automatic constant rolling force control, gaugemeter monitoring, and automatic tension gauge control for thin-steel strip. A buyer evaluating a strip cold rolling mill can therefore review gauge control alongside the mill's roll-gap, force, tension, and monitoring arrangements.

The strip gauge control functions include forward AGC, feedback AGC, monitoring AGC, tension AGC, mass flow AGC, and pre-setting AGC. The system can collect, record, display, and print different rolling parameters.

A rolling process database supports rolling schedules for steel strips with different specifications. Before each rolling operation, the operator can invoke the corresponding rolling process from the database. This is useful for a mill that changes between defined strip specifications and needs its control settings organized by process.

The specified lengthwise gauge tolerances are 0.15 ± 0.003 mm and 0.3 ± 0.006 mm. These figures give the buyer a starting point for comparing the required strip thickness control with the intended mill process and product schedule.

For example, a buyer planning thin-steel strip production should compare the target strip specifications with the applicable tolerance figure and identify the required control modes before discussing the system configuration.

Yes. The AGC system is described for both cold and hot strip rolling mills. It is also identified for use on temper mills and skin pass mills.

The appropriate configuration depends on the mill type, strip specifications, and the control functions required in the line. A buyer preparing an upgrade should identify the existing roll-gap, force, tension, monitoring, alarm, and process-data arrangements so the control scope can be reviewed against the intended application.

Prepare the target mill type, such as cold rolling, hot rolling, temper, or skin pass, together with the strip grade, thickness range, and required gauge-control functions. For an existing line, include the mill layout or control description and the current roll-gap, force, tension, monitoring, alarm, and process-data arrangements.

A practical discussion should also define which functions must be retained and which must be added. Send the mill layout, strip specifications, process schedule requirements, and required control functions to Beijing Yang Wang Li Xin Sci&Tech Co.,Ltd. for technical review.