ANALYSIS OF ROLLER-INDUCED RESIDUAL-STRESSES IN BANDSAW PLATES

The wide bandsaw plate is often initially stressed by ''roll-tensionin g'' to improve cutting performance. Despite the critical importance of this process to practice, a quantitative understanding of the relatio nship between the ''roll-tensioning'' and the plate performance improv ement is not available principally because the residual stresses gener ated in the roll-tensioning process are unknown. This paper predicts t he approximate residual stress state induced in the bandsaw plate by t he longitudinal plastic deformation generated by ''roll-tensioning'', given the number and location of each rolling track and the magnitude of longitudinal plastic strain in each rolling track. In the case of i ncremental indentation of the plate by rolling with spherical rollers, the longitudinal plastic deformation in each track, and consequently the residual stress state of the plate can be predicted by measuring t he indentation profile of each rolling track.