EFFECT OF STRESSES IN ANNEALING A COPPER WIRE ON ITS TECHNOLOGICAL PROPERTIES

In annealing, wire is subjected to the effect of an external load, for example, when drawing and annealing are combined. Modern production o f enameled wires involves continuous processes in which recrystallizat ion annealing of the wire is conducted directly in the enameling unit or together with the operations of drawing and enameling (single-pass process, in-line process). In such processes the recrystallization ann ealing of the wire is conducted in through tube furnaces. In order to provide tightening and coaxiality of the wire in the furnace it is sub jected to a tensile load. The stresses appearing in the wire should no t exceed the yield limit so that its diameter changes within the admis sible range. The literature contains data on intensification of recrys tallization under the effect of low stresses. It is of interest to stu dy the effect of the load in annealing on the technological properties of the wire.