Zhuzhou Aite Cemented Carbide Co., Ltd
Tungsten Carbide Pins
Introduction to Tungsten Carbide Pins
Tungsten carbide pins (also known as cemented carbide pins) are high-performance components widely used in industrial applications due to their exceptional hardness, wear resistance, and durability. They are primarily composed of tungsten carbide (WC) particles bonded with a metallic binder (typically cobalt or nickel) through powder metallurgy processes.
Key Features
- High Hardness: With a Mohs hardness of 9–9.5, tungsten carbide pins are nearly as hard as diamond, making them ideal for abrasive environments.
- Wear Resistance: Their superior wear resistance extends service life in high-stress applications, such as plastic injection molding core pins.
- Thermal Stability: They maintain structural integrity at high temperatures (melting point: 2870°C) and resist deformation under thermal cycling.
- Mechanical Strength: High compressive strength and stiffness (Young’s modulus: 530–700 GPa) ensure reliability in demanding conditions
Applications
- Plastic Injection Molding: Used as core pins to reduce cycle time, enhance rigidity, and minimize downtime in mold production.
- Mining & Drilling: Employed in DTH (down-the-hole) drill bits for rock and coal mining due to their toughness and impact resistance.
- Industrial Tooling: Applied in precision machining, dies, and wear-resistant components.
Manufacturing Process
- Powder Mixing: WC particles are blended with a binder metal (e.g., Co).
- Compaction: The mixture is pressed into the desired pin shape.
- Sintering: High-temperature sintering (1500–2000°C) forms a dense, cohesive structure.
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