Tungsten carbide punch die

  • Processing Method: Forming Mould
  • Origin: China
  • Production Capacity: 10000 PCS/Month
  • Mold Cavity Technology: CNC Milling
  • Material: Tungsten Carbide
  • HRA 90–93 hardness with 3–5× longer life than steel
  • ≥6000 MPa strength for high-load applications
  • Low thermal expansion for stable precision

Product Description

Tungsten carbide punch dies is a type of die used in stamping processes, made of tungsten carbide materials, which is used to form metal parts in high speed and pressure conditions. It has very high hardness and wear-resistance, so we can see it in many industries that are complex and good precision. For the grade choose, due to the high impact during usage, tungsten carbide punch dies are usually made by high cobalt tungsten carbide, like YG20, YG30, and must be made by virgin material, otherwise, the dies may crack during usage in recycle powder.

Features of Tungsten carbide punch die

  • Exceptional Balance Between Strength and Toughness: The compressive and bending strength of tungsten carbide punch dies are very good, and it has the a certain of resilience, especially for the cobalt binder, which cannot break easily during assemble.
  • Good Corrosion Resistance: We can customize the binder according to different using conditions. Usually, YG series (cobalt binder) work well in the normal corrosion conditions; YN series (nickle binder), is for the very strong corrosion conditions.
  • Better Thermal Stability and Thermal Fatigue Resistance: The hardness and strength of tungsten carbide wire drawing dies just a little bit reduction meeting the high temperature (400-500°C) when drawing. It can resist thermal cracks caused by alternating cold and heat.
  • Extreme Hardness and Wear-resistance: The hardness of tungsten carbide punch dies is around HRA 90-93, equivalent to HRC 70-75. The service life of it is the 3-5 times compared to the steel dies, which can significantly reduce the downtime to replace.
  • Excellent Compressive Strength: The compressive strength of tungsten carbide punch drawing dies can reach to 6000 MPa or above, which can bear the high stress of large deformation, and it can process some materials with high strength.
  • High Dimensional Stability: The coefficient of thermal expansion about tungsten carbide punch dies is very low, which is 1/2-1/3 lower than steel. That means the dimensional changes of it are very small when temperature changes.

Specification

Produce NameTungsten carbide punch dies
Hardness89-93 HRA
Density12.7-13.90 g/cm³
BinderCobalt
Wear ResistanceOptimal
Temperature ResistanceGood
Tolerances≤±0.01mm
Surface FinishRa0.02μm
DimensionsCustomized, according to drawing

applications of Tungsten carbide punch die

  • Metal machining
  • Oil and drilling
  • Electronics
  • Car&automobile

Why Choose Our Tungsten Carbide Seal Rings?

Advanced Material Expertise & Grade Development

We’re the expert of material. We’re not only the manufacturer to make the tungsten carbide drawing dies, but also the researcher of the tungsten carbide. We adopt coarse, medium, fine and ultra fine tungsten carbide powder to customized the binder. We have a lot of grade to meet your diverse requirements.

In-House Blank Production & Tooling Capability

We’re the factory generated the blanks making and fine machining.

And we started our business by making the tooling, so we have the great capability to design and make the tooling of tungsten carbide drawing dies. These will help you to save time and cost on tooling.

FAQs

A1: Yes, they can. And we recommend most of customers to do the coating of their dies. One reason is the coating can improve the service life of dies to 1.5-3 times. Another reason is coating can decrease 20-50% coefficient of friction. The common coating of punch dies are TiN, TiAlN and DLC.

A2: No, it isn’t. This is a misunderstanding of tungsten carbide. Firstly, we can use the fine or ultra fine powder that grain size is 0.4-0.8μm to make the punch dies, this can make the resilience of tungsten carbide promote 30-50%. Secondly, We can use the grade with high cobalt like YG15, YG20, YG30 to achieve the balance of hardness and resilience.

A3: 1. Mixing and pressing: mix the WC powder with the cobalt, then pour the mixed powder into tooling, press the blanks by machine.

2. Sintering: sinter the pressed blanks under high temperature (around 400℃), this is the important steps to determine the properties of material.

3. Fine machining: make the dimensions to reach the requirements on the drawings.

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