LEGEND

A. Approach Angle / Front Bell
B. Blend
C. Reduction Angle/Drawing Angle
(Shown at 18°. Normal for Soft Materials is 16° - 20°. Hard Materials is 12° - 16°.)
D. Wire Contact Area/Impact Point
E. Bearing Length (Shown at 50% of Hole Diameter. Normal for Soft Material is 20% - 40%. Hard Material is 40% - 60%.)
F. Polished Back Relief
G. Exit/Back Bell

Approach Angle - Also known as the Front Bell. The Approach Angle area accommodates both wire and lubricant. The approach area is designed so that, in the wet draw process, a consistent film of lubricant encases the wire as it travels along the die wall through both the reduction and bearing area.

Reduction Angle/Drawing Angle - The wire begins the deformation process in this area of the die. The Reduction or Drawing Angle is expressed in degrees.

Impact Point - This is the point of surface that first comes in contact with the drawn material. Normal wear patterns develop just below this contact point.

Bearing - The Bearing area creates the final exit size of the wire. The Bearing area length is expressed as a percentage of the hole diameter.

Polished Back Relief - This is a highly polished relief angle that helps to reduce metallic fines and potential wire shaving due to misalignment.

Exit - Also known as the Back Bell. The drawn material exits through this area of the die. Its shape provides the strength and support needed to withstand the drawing stresses.

Wire Die Applications
Reduction Angles Generally Used for Various Metals