SORM 3plus

Roughness is an important surface parameter, especially in the case of cold-rolled steel sheet. The standardised method of measurement used up until now is to use a stylus instrument where measurement is carried out offline by taking a specimen from the coil head end and from the coil tail end.

SORM 3plus is a non-contact online roughness measurement system, which can be used on metallic and non-metallic surfaces at production speeds of up to 1800 m/min. SORM 3plus measures online the surface roughness of the travelling strip.

By means of an optical procedure, SORM scans the surface topography. This surface profile can be compared to the profile which is determined by a tactile stylus instrument. Based on the measured profile, the roughness parameters (Ra, RPc, Rz) are calculated according to the applicable standards (DIN / ISO / SEP).