Method for determining the hardness of material in the form of a continuous web or wire.

摘要

A hardness-measurement device (6) is arranged between a treatment system (3), for example a continuous annealing furnace for metallic material (1) in the form of a continuous strip or wire, especially copper strip, and a take-up winder (11) for the copper strip (1). In addition, the copper strip (1) is guided flat under pressure over a support roll (10). A hardness-test device (13) which acts according to the ball rebound method is provided above the support roll (10). With the aid of this hardness-test device (13), in the case of continuous copper strip (1) the hardness of the latter can be determined and the speed of the copper strip (1) and/or the furnace temperature can thereby be regulated, so that the copper strips (1) fed sequentially through a continuous annealing furnace (3) have approximately equal qualities.