A load transducer has been developed to measure the contact forces in the deformation zone during rolling. The transducer consists of a strain gauge equipped insert, embedded in the surface of the roll. The length of the insert exceeds the contact length between material and roll. By analyzing the output from the transducer, the friction stress and normal pressure in the contact zone can be determined. The new concept differs from existing pin designs by a lower disturbance of lubricant film and material flow and limited penetration of material between transducer and roll. Aluminum, cupper and steel strips with a width of 40 mm was rolled with reduction varying from 2.7% to 29%, in a pilot mill. For evaluating the transducer, the measured contact forces are compared with external measurements of roll separating forces and torque. The determined friction coefficients are compared with values found by forward slip measurements.
|Title of host publication||ICTP2005|
|Publication status||Published - 2005|
|Event||8th International Conference on Technology of Plasticity - Verona, Italy|
Duration: 9 Oct 2005 → 13 Oct 2005
|Conference||8th International Conference on Technology of Plasticity|
|Period||09/10/2005 → 13/10/2005|