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Natural diamond dies,ND Wire Dies
Author:Wire Drawing Dies Date:September-16-2008 From:Zhenhua Wire Drawing Dies Factory 

    Diamond is known as  the hardest material in the world, has the extremely high degree of hardness and the good thermal conductivity and the light thermal properties, widely applies in the industrial field in the tool manufacture, in optics product and the conductor profession.
    Usually as the wired rawing dies raw material's diamond is the la diamond. This kind of diamond includes certain nitrogen impurity (0.1% magnitude), and these nitrogen impurity set has become the very small aggregate. Simultaneously also includes the small piece (in nitrogen impurity relation), at present these small piece precise structure unknown.
    This factory production's rough diamond wiredrawing mold selects material from the high quality natural diamond material, undergoes the strict choice, the processing becomes. The surface smooth finish is high, the resistance to wear good is its principal advantage. Is suitable requests the high each kind of wire rod in the surface quality the drawing.
    dies size range: 0.015mm~2.00mm

Products' Characteristics

 Precise die orientation
 Accurate die profile
 Highly polished finish from bell to back relief
 Accurately sized
 Straight & consistent reduction angle
 Maximum wear resistance
 Minimum die pull
 Excellent wire surface quality
 Hole diameters: 0.009 - 1.750 mm

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

Typical Reduction Angle & Bearing Length

% of Area Reduction Per Draft
Lead
Zinc
Silver
Gold
Aluminum
Nickel
Copper
Brass
S. Steel
Alloys
Hard Alloys
High Carbon Steel
Hot
Tungsten
8 to 12%
16°
12°
11°
10°
10°
12 to 16%
18°
14°
13°
12°
12°
16 to 25%
22°
18°
16°
15°
12°
25 to 35%
24°
22°
19°
18°
14°
Bearing Length
0.2-0.5d
0.4-0.8d

 

 

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