ABB has unveiled an upgraded generation of its Millmate Thickness Gauge (MTG), engineered to deliver precise thickness readings during the concluding stage of aluminum hot rolling. The newly developed MTG Box Gauge extends the capabilities of the existing MTG platform into high-temperature rolling environments, enabling accurate measurement of aluminum strip below 8 millimeters as it leaves the hot mill — a point where precision is essential for quality and efficiency.
To withstand the harsh operating conditions of hot rolling, the system features an enhanced IP66 protective seal that prevents emulsions used for lubrication and cooling from entering the sensing components. The redesigned unit also incorporates an improved internal airflow layout that directs cool air toward sensitive electronics and discharges warm air through the base. This approach can lower the temperature of the transmitting coil by up to 40°C, increasing service life and boosting operational performance.
Powered by ABB’s pulsed eddy current technology, the MTG Box Gauge eliminates the complexity and safety risks tied to X-ray-based measurement systems. A key advantage of the MTG Box Gauge is its ability to perform high-accuracy, single-side measurements without requiring sensors above and below the strip. This reduces installation time, simplifies upkeep, and frees up space in mills where access to the underside of the strip is restricted.
While traditional gauges typically need recalibration for different alloys, the MTG Box Gauge offers consistent accuracy across all aluminum grades. This alloy-independent capability helps producers streamline setup, limit downtime, and maintain production flow even with varied rolling schedules.
“Achieving dependable thickness measurement at the end of hot rolling has long been a challenge for aluminum producers,” said Lars Karlsson, Global Product Line Manager at ABB’s Measurement & Analytics division. “MTG Box Gauge brings a hardened, factory-calibrated solution built for demanding mill environments. With alloy-independent performance, safe technology, low maintenance, and single-side measurement, it delivers the accuracy and reliability that hot rolling operations require.” In October 2025, ABB earned the “Manufacturer of the Year” honor at the Instrumentation & Electronics Awards for its work in helping the aluminum industry improve output, reduce scrap, and advance decarbonization initiatives.
ABB is a global leader in electrification and automation, committed to enabling sustainable, resource-efficient industries. Through its combined engineering and digital expertise, ABB supports customers in achieving higher productivity, reliability, and environmental performance. The company has a 140-year legacy and employs roughly 110,000 people worldwide. ABB shares trade on the SIX Swiss Exchange (ABBN) and Nasdaq Stockholm (ABB).
ABB’s Process Automation division delivers automation, electrification, and digital solutions across critical sectors — from energy and water to materials, manufacturing, and marine. With a workforce of about 20,000 and a portfolio of advanced technologies and services, the division helps global industries operate cleaner, faster, and more efficiently.
