Customized Tungsten Steel Round Bar for Hard Alloy Punching Pin
Cemented carbide is a composite material produced by combining metal carbide powder with cobalt. Tungsten carbide, titanium carbide, tantalum carbide, and vanadium carbide are typically used to enhance the material properties, resulting in exceptional hardness and wear resistance. This high-efficiency tool material is manufactured through powder metallurgy, where various shapes are pressed and sintered to achieve specific hardness, strength, and toughness characteristics.
Carbide insert pins, also known as tungsten steel insert pins and hard alloy punching pins, are precision components made from hard alloy rods. They feature high precision, exceptional hardness, and excellent bending strength, making them ideal for the hardware and electrical processing industries. These pins are primarily used in stamping dies for material separation or plastic deformation to produce required parts. Their advantages include high hardness, long service life, corrosion resistance, and rust prevention, making them widely applicable in industrial machinery manufacturing and processing.
As precision mold components, consistency in carbide insert pins is crucial, directly impacting mold longevity and product dimensional accuracy. Our manufacturing process encompasses both rough processing of carbide rods and fine-size processing of hard alloy punches, with strict control over dimensional tolerance requirements and mass production consistency.
Physical Parameters
| Parameter |
Value |
| Cobalt Content |
10% - 12% |
| Density (g/cm³) |
14.0 - 14.5 |
| Hardness |
89 - 92.0 HRA |
| Grain Size |
0.6 - 1.2 μm |
| Bending Strength |
4000 MPa |
| Modulus of Elasticity (GPa) |
490 |
| Thermal Expansion Coefficient (10⁻⁶/°C) |
5.4 |
| Dimensions & Specifications |
Customized according to drawings with precision requirements up to ±0.001 |
Product Advantages
Our company specializes in manufacturing hard alloy insert pins for precision mold applications, particularly for electronic ceramic injection molds where precision requirements are exceptionally high. Product consistency is our primary standard, ensuring that each tungsten carbide punching pin maintains perfect uniformity. Our manufacturing process guarantees product consistency with tolerance requirements of +0.002 and surface finish of 0.2, meeting the highest standards for electronic ceramic injection mold applications.
Technical Manufacturing Process
Our comprehensive manufacturing process for hard alloy insert pins follows the complete cemented carbide production workflow:
- Thorough ingredient mixing and pulverization
- Drying and sieving processes
- Addition of forming agents and re-drying
- Mixture sifting and granulation
- Pressing and forming operations
- Low-pressure sintering
- Sintered blank inspection (including non-destructive ultrasonic testing)
- Dimensional accuracy verification
- EDM or wire cutting processing
- Rough grinding and fine grinding
- Polishing and final inspection
- Marking and packaging
Mass production of carbide insert pins requires strict product consistency, which directly influences production efficiency. Whether for custom orders or mass production, our company maintains rigorous control over every processing procedure to ensure consistent quality in carbide insert pins.
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