Enhancing Uptime in Metal Processing

Taiwell Aluminium specialises in precision metal processing and advanced cold rolling operations where accuracy, reliability, and responsiveness are critical. In demanding applications such as Automatic Gauge Control, hydraulic servo valves for metal processing must continuously adjust position and pressure in real time to maintain stable strip thickness, placing extreme demands on control stability and dynamic response.

When their legacy valves began to show instability and replacements became difficult to source, Taiwell turned to SGD Engineering, Domin’s authorised distribution partner in Taiwan, for a faster, more reliable solution.

The Application: Cold Rolling Mill Automatic Gauge Control

At the heart of the system is the Domin S6 Pro, a high-performance direct drive valve installed within the AGC hydraulic circuit. The S6 Pro precisely controls the position and pressure of the hydraulic cylinder, dynamically adjusting the roll gap during the aluminium rolling process. The system operates at approximately 210 bar pressure with dual-loop force and position control, and the valve provides exceptional stability and response under high-frequency conditions typical of metal processing environments.

To simplify installation, SGD Engineering supplied a custom adapter plate, allowing the S6 Pro to directly replace the original valve without modifying the existing system design.

Key Outcomes

  • Exceptional control performance: Smooth response across the full operating range, with no deviation in thickness control.

  • Contamination resistance: Electrohydraulic direct-drive design eliminates the traditional nozzle-flapper mechanism, reducing sensitivity to contamination.

  • Reduced maintenance costs: Even in hydraulic oil containing fine containments, the S6 Pro operates reliably. This means fewer replacements, less downtime, and improved system availability culminates in lower total cost of ownership.

Hydraulic Servo Valves for Metal Processing
S6 Pro on Taiwell Aluminium's Automatic Gauge Control System

Delivering Results with the Domin S6 Pro

Once installed, the Domin S6 Pro servo valve demonstrated consistent, high-precision performance. Taiwell’s AGC system achieved smooth, stable thickness control with no signs of drift, lag, or offset – even under sustained high-demand conditions typical of cold rolling production.

Through the installation of Domin’s S6 Pro direct drive valve and the support of SGD Engineering, both the end user and distribution partner achieved measurable results in metal processing performance and reliability.

  • More uptime, less downtime: Stable valve operation ensures continuous production.
  • More precision, less risk: Reliable servo valve performance keeps product quality consistent and control stable.
  • More availability, less waiting: Regional stock through Lead Time Zero enables immediate response when needed.

By holding stock locally and delivering Domin Valves without delay, SGD Engineering strengthened its reputation for responsiveness and trust. This partnership demonstrates how Lead Time Zero empowers customers to maintain productivity, minimise risk, and do more with less.

Partner with Domin

This case study demonstrates how hydraulic servo valves for metal processing must deliver consistent stability, contamination tolerance, and immediate availability to support high demand cold rolling environments. However, many industrial manufacturing applications face the same demands for reliability, precision, and rapid delivery. If you have similar needs whether it’s in metal processing, plastics, timber, or other industrial manufacturing spaces, contact our team today. Domin’s range of servo and servo proportional valves are proven across industries, delivering excellence through Lead Time Zero availability and drop-in compatibility.

Reach out today to discover how Domin can help you do more with less.