How Does a Cold Rolling Mill with Hydraulic AGC Ensure Thickness Consistency?

In cold rolling sheet production, thickness control is one of the most critical quality indicators. Large thickness variations not only compromise mechanical performance and surface finish but also create challenges for downstream processing. The Φ185/Φ560×700 Four-High Two-Stand Tandem Cold Rolling Mill is equipped with a hydraulic Automatic Gauge Control (AGC) system, ensuring consistent thickness even during high-speed production.

The hydraulic AGC system continuously monitors rolling force, roll gap, and strip thickness variations, making rapid adjustments to hydraulic actuators to stabilize the roll gap. Compared with traditional mechanical adjustment methods, hydraulic AGC offers faster response and higher accuracy. Even when reducing strip thickness from 3.0 mm to 1.8 mm, thickness deviations are kept within a minimal range.

This mill integrates Siemens electrical control and DC motor drive systems, enabling the AGC to work in harmony with rolling speed and rolling force for closed-loop control throughout the process. Whether processing common carbon steels such as Q195 and Q235, or cold-rolled grades like SPCC and SPCD that demand strict thickness tolerances, the mill delivers consistently high-quality output.

In today’s industrial applications, thickness consistency is not only essential for meeting stringent standards in automotive, aerospace, and electronics industries but also directly impacts a company’s competitiveness. By adopting a cold rolling mill with hydraulic AGC, manufacturers can reduce rework, enhance productivity, and ensure every steel coil meets international quality benchmarks.