Detmaster FRMD
Foil Roll Mark Detector
Innovative detection system for early detection of work roll surface defects, providing for a significant scrap reduction during the foil rolling mill process.
A holistic approach
During foil rolling, work roll surface imperfections generate periodical surface defects on the rolled material, which leads to significant losses in material and productivity.
The application Foil Roll Mark Detection system allows the identification of these deficiencies in the foil surface, minimizing the consumption of resources and reducing waste and emissions.
FRMD can be installed in a new mill and retrofitted in existing foil mills.
At a glance
The FRMD System is an automated optical surface system to recognize repetitive surface defects on flat rolled products like foil such as work roll marks and work roll holes. It consists of an servo driven linear unit with a traversing sensor head incorporating a homogenous, intense laser light source. A dedicated photo-sensitive sensor element generates an analogue signal which correlate with the surface structure. These signals are continuously digitized, analyzed and classified by fast analogue-digital converters and high-performance digital signal processing algorithms.
This allows measuring of surface anomalies and evaluating of contrast ratios (defect to-background characteristic).
- Online detection of repetitive surface defects on flat rolled products such as work roll holes or work roll marks
- Significant reduction of scrap
- Higher productivity and efficiency of the rolling process
- With highest possible detection efficiency
- Detection at high exit speeds up to 2500 m/min
- Positive impact on the carbon footprint