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ND Wire Drawing Dies

Diamond dies are essential tools in the wire drawing process — used to precisely reduce the diameter of ferrous and non-ferrous wires and rods. Weilly Diamond specializes in high-performance wire drawing dies engineered for precision, durability, and efficiency. Natural diamond dies are essential for ultra-fine and fine wire drawing, offering unmatched hardness, purity, and precision. Used extensively in electronics, medical, and aerospace industries, these single-crystal tools ensure consistent performance when drawing non-ferrous wires such as gold, silver, platinum, copper, and aluminum.

Precision for Fine & Ultra-Fine Wire Drawing

At Weilly Diamond, we specialize in the design and manufacture of high-precision Natural Diamond Dies that meet the most demanding industry standards. Each die is crafted from premium-quality natural diamonds with accurately aligned {111} crystal orientation, providing superior hardness, stability, and reinforcement. This ensures excellent wear resistance, consistent performance, and extended die life.

Using advanced manufacturing and polishing technology, Weilly produces custom die profiles with tight tolerances for wire sizes ranging from 0.015 mm to 2.0 mm, ideal for ultra-fine and fine wire drawing. The single-crystal diamond structure delivers mirror-polished surfaces, low friction, and minimal drawing resistance, resulting in smoother operation and enhanced process stability.These dies are trusted across electronics, medical, and high-spec wire manufacturing industries, where precision, durability, and reliability are essential.

 

 Natural diamond wire drawing die standard tolerance and shell table Unit: mm
 Size Range Standard Tolerance Minimum Tolerance

Standard housing

Diameter x Thickness
<0.040 +0-0.0005 +0-0.0004 Ø25 or 28 x 6
0.040~0.059 +0-0.0008 +0-0.0005 Ø25 or 28 x 8
0.060~0.099 +0-0.001 +0-0.0005 Ø25 or 28 x 8
0.100~0.399 +0-0.0015 +0-0.001 Ø25 or 28 x 8
0.400~0.799 +0-0.002 +0-0.001 Ø25 or 28 x 10
0.800~2.500 +0-0.003 +0-0.002 Ø25 or 28 x 12

Features

◆ Excellent surface smoothness and a low coefficient of friction.

◆ Precise die shape for improved wire accuracy.

◆ Most appropriate for producing ultra-fine and fine wires with a size range: 0.015 mm to 2.0 mm.

Common Applications

◆Gold, Silver, Aluminum, and copper bonding wire.

◆Stainless steel and medical-grade wire. 

◆EDM wire and precision alloys.

◆Precious metal wire drawing.
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