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What is wire-drawing die

Wire drawing die usually refers to a mold for drawing variety of metal wire  and fiber wire.

All drawing dies have a hole in the center of a certain shape, round, square, octagon or some other special shape. The metal decreases in size and even changes shape as it is pulled through the die holes.

The typical structure is a cylindrical (or slightly tapered) ND/PCD/CVD/MCD die core tightly embedded in a circular steel case, There are Bell radius, Entrance angel, approach angle, bearing and back relief in the inner hole of the die core.

 wire-drawing die wire-drawing die


Applications of Wire-drawing Die

Wire drawing dies are widely used in electronic devices, radar, television, instrumentation and aerospace, as well as commonly used tungsten wires, molybdenum wires, stainless steel wires, wire and cable wires and various alloy wires are drawn with diamond wire drawing dies.

Types of wire-drawing die

1. ND wire-drawing die

The natural diamond wire drawing die has strong wear resistance and extremely high service life due to the use of natural diamond as raw material.


ND wire-drawing die


2.PCD wire-drawing die

pcd wire-drawing has the advantages of high hardness, good thermal conductivity, strong wear resistance, not easy to break, long service life and high economic benefits. It is suitable for drawing various metal wires.


pcd wire-drawing die

Advantages of PCD wire-drawing die

 -Much long use life

-Suitable for long production runs

-Best choice for highly corrosion wire materials

-Suitable for titanium wire materials

-Wire remains round, even with significant die wear

Specifications of PCD wire drawing die blanks

Cobalt-based polycrystalline diamond wire drawing die blank (round/H hexagonal)

ADDMA No. Sizes grit sizes(μm) Maximum recommended hole diameter
ΦD(mm) Φd(mm) T(mm)
D6 2.5 1   3,10 0.4
D6 3.2 1   3,10 0.5
D12 3.2 1.5   3,10 1
D15 5.2 2.5   5,10 1.5
D18 5.2 3.5   5,10 2
D21 7.2 4   5,10 3.1
D24 9.5 5.3   5,10 4.4

Polycrystalline diamond wire drawing die blank with carbide support

ADDMA No. sizes Concentricity grit sizes(μm) Maximum recommended hole diameter
D(mm) d(mm) T(mm)
D12 8.12 4.2 1.5 0.25 3,5,10,25 1
D15 8.12 4.2 2.3 0.25 3,5,10,25 1.8
D18 8.12 4.2 2.9 0.35 3,5,10,25 2.3
D21 13.65 6.9 4 0.4 3,5,10,25 3.5
D24 13.65 6.9 5.3 0.5 3,5,10,25 4.6
D27 24.13 12..9 7.5 0.5 5,10,25 5.4
D27 24.13 12.9 8.7 0.5 5,10,25 5.8
D30 24.13 12.9 12 0.5 5,10,25 7.6
D30 24.13 15.6 12 0.5 10,25 9
D33 24.13 15.6 16 0.5 10,25 10.5
D30 30 18.3 13.5 0.6 25 11.2
D33 30 18.3 15.5 0.6 25 12
D36 30 18.3 18.5 0.6 25 12.7

Other specifications can be customized, diamond outer diameter 2.5mm~40mm, thickness 1mm~25mm The maximum recommended aperture is mainly the recommended size for soft wires such as copper wires and aluminum wires. For harder materials, it generally does not exceed 65% of the recommended size.

3.CVD wire-drawing die

Single crystal diamond  is a synthetic diamond with high purity, no impurities and high stability. These quality characteristics also make the material have extremely high hardness and stable wear resistance.

CVD wire-drawing die is mainly used for filament and ultra-fine wire drawing, or maintains a wide range of applications in applications requiring excellent wire surface finish and good heat dissipation performance.


CVD wire-drawing die

Advantages of CVD wire-drawing die

-Good for fine and super fine wires

-Low surface friction

-Smooth wire surface

-Ultra-high accuracy wire available


Moresuperhard provide high grade PCD/CVD/HPHT plates for wire-drawing die.

PCD blanks for wire-drawing die


pcd wire-drawing die

CVD plates for wire-drawing die


CVD wire-drawing die

HPHT plates for wire-drawing die


hpht plates





TAG:  wiredrawingdieblanks丨diamonddrawinddies丨mcddrawingdies丨drawingdiescore 丨pcd

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