Measurement of Contact Pressure Distribution between Rolling Rolls Using Pressure Measuring Film

摘要

In this study, contact pressure distributions between rolls in cold rolling are examined experimentally. In cold rolling in which the thickness of the strip tends to decrease, it is difficult to roll flat strips because the elastic deformation of the roll is larger than the plastic deformation of the strip and the configuration of deformed rolls is complex. To examine such complex deformation of a roll, it is of cardinal importance to determine the contact pressure distributions between rolls experimentally. In this report, the method of measuring the contact pressure between rolls using a pressure measuring film is examined. The elastic deformation of rolls and a film in contact, where the film is held between two rolls, is analyzed. As a result, it is found that plastics have to be used as the material of rolls for the measurement of the contact pressure distribution between rolls, so that the roll deformation is not disturbed by the insertion of the film. Finally, it is confirmed that the experimental results, on the contact pressure determine using the 6-high mill models made of acrylic plastic, agree with the theoretical ones, and the pressure measuring film is suitable for examining the contact pressure distributions between rolling rolls.