LAUSR

Flat-rolled wires are used in many applications, such as springs, guide rails, windshield wipers, and saw blades.1) During the flat wire rolling process, the initial round-shaped wire is deformed into a flat wire by two flat rolls at room temperature.2) Typically, there are two significant issues in the flat wire rolling industry. The first is shape control of the flat-rolled wire since direct shape control of wire is impossible during the flat wire rolling process. In other words, a lateral spread always occurs in free surface of wire,3) and undesirable shapes and sizes of wire lead to unsatisfactory products. Consequently, several studies have been conducted about the influence of process conditions such as height reduction, friction, wire size, and rolling velocity on the lateral spread of wire using empirical and/ or numerical methods.1,4–8) The studies reported that the lateral spread of wire increased with height reduction and was not dependent on rolling velocity. The second issue is the inhomogeneity of mechanical properties of flat-rolled wire Enhanced Homogeneity of a Flat-rolled Wire in Twinning-induced Plasticity Steel Using the Pass Schedule Design