Reduction Angle

The angle of the cone that is cut into a wiredrawing die just prior to the bearing length, which is the smallest diameter in the die and gives the product its final diameter. The reduction angle is critical for controlling the physical integrity of the wire and the relative amount of residual lubricant remaining on the wire surface. It controls the product as it passes into the die. This is a critical angle that dictates the performance of the die for the proper profile.