EMG SORM® - Online roughness measurement

Seamless measurement of production-relevant surface parameters

EMG SORM® is the online measuring system for recording roughness and waviness parameters on running strips. An important quality feature of uncoated and surface-finished strips are roughness characteristics. The standard method used so far is roughness measurement by means of a stylus instrument.  

To do this, the operator must stop the production line or take samples from the coil and measure them offline in the laboratory. EMG SORM®, on the other hand, is a non-contact online measuring system that can be used reliably on metallic and many non-metallic surfaces.    

Customer benefits and unique selling propositions

Ensuring product quality 

Control and optimisation of the skin pass and/or rolling process 

Cost reduction through optimisation of the roll service life 

Reduction of complaints due to early detection of deviations from the required roughness range 

Reduction of scrap during a subsequent check on the rewinding line 

Stable forming process due to constant roughness parameters  

Excellent painting results due to homogeneous surface roughness  

Savings compared to manual stylus measurement  


Have we caught your interest? Get in touch!

"EMG SORM® measures the metal strip online and calculates the surface profile, from which the roughness parameters Ra and RPc as well as the waviness Wsa are then determined. Our solution thus enables the seamless measurement of production-relevant surface parameters."

Franziska Kneisel, Product Manager


Please contact me:

T: +49 2762 612-392
E-Mail: franziska.kneisel@emg-automation.com

More solutions

In the production of steel and aluminium strips, the increased demands on new materials and ever more complex components require an increasingly higher level of process reliability. With our innovative quality assurance systems for the cold rolling area, you can optimise your processes - and thus also your product quality. All EMG systems are based on the same hardware and software structure. Benefit from the use of our broad solution portfolio and reduce your TCO (Total Cost of Ownership).  


EMG IMPOC is a well-proven magnetic-inductive measuring system for the automatic, non-destructive online determination of the mechanical properties tensile strength and yield strength of ferromagnetic steel strips. 



EMG eMASS® is a turnkey system for stabilizing fast running ferromagnetic steel strips based on electromagnets.



In hot-dip galvanizing lines, the thickness of the zinc layer on the metal strip is adjusted with the aid of compressed air-driven blow-off nozzles - so-called air knives - directly above the zinc pot.


EMG BREIMO - Strip width measurement

EMG BREIMO is the non-contact, optical strip width measurement of steel strips in a continuously running process.


EMG SOLID® - Oil layer measurement

Increased demands on new materials and ever more complex components increasingly require higher process reliability.


EMG iCAM® - Strip & slit strip measurement

THE Solution for high-precision strip and slit strip width measurement


EMG iTiM - Thickness measurement

EMG iTiM is our solution for thickness measurements in various areas, such as hot and cold rolling, steel and aluminum service centers as well as in the automotive industry.


Need assistance?
We can help!

Your Contact