CURVATURE-REDUCTION ANNEALING OF AMORPHOUS METAL ALLOY RIBBON

摘要

A longitudinal curvature in an amorphous metal alloy ribbon (32) is reduced by heat-treatment. While the heat-treatment occurs, the alloy ribbon (32) is bent "backwards" against the longitudinal curvature, to reduce the amount of heattreatment required. The process is carried out continuously by transporting the alloy ribbon (32) from reel (36) to reel (38), while wrapping the ribbon (32) around a heated roller (34). Using a discrete strip cut from the alloy ribbon (32) subjected to the curvature-reducing process, a magnetomechanical EAS marker (24') is constructed that has a relatively low profile, while retaining desired magnetic properties.