Draw plate

A die or Ziehhol is a tool of forming technology, used in a wire-drawing or other production, is produced in long material.

The die is an insert having an opening through which material, usually metal, and this is drawn by taking the form of the opening of the die ( forming). The material is at the same time longer and generally thinner.

Most solid products are wires and pipes. Wire drawing dies were formerly made of hardened steel, nowadays of a stainless steel frame with an incorporated part of diamond (natural or synthetic single-crystal diamond (SCD ) or polycrystalline ( PCD / PCD) diamond) or hard metal.

Modern drawing dies are precision tools, with hole sizes partly under 0.01 mm, for example, for the manufacture of fine wire for the medical industry.

The geometry of the die depends on the to be drawn material from: the springback degree of drawing material determined by how much the opening must be narrower than the calculated, desired finished dimension, if the solid Good springs back, it is after pulling back on little bigger.