Rolling process optimization by means of profile measurement between the passes

Together with the world's leading manufacturer of hot-rolled special steel profiles Mannstaedt GmbH, the Austrian metrology company NextSense GmbH has developed a device for measurement of hot rolled profiles between single passes. For the first time ever, the measurement between passes is possible through the profile measurement device CALIPRI HOT, which thereby significantly shortens the set-up time per rolling. The measurement is started by pushing a button on the outside of the housing. This forces the sensor to move around the bar forwards and backwards again, which takes approximately 10 seconds. During this movement approximately 70 single images are taken by the camera from different directions and preprocessed on the sensor. After completion, the system is removed by hand again. The whole time needed for one measurement is below 30 seconds. The preprocessed data of the measurement head are transferred wirelessly by Wi-Fi interface to the operators tablet PC. The single measurements are combined and aligned.