Tungsten Carbide Solid Plungers
Product Description
Tungsten carbide solid plunger is one whose entire body is formed through powder metallurgy sintering using cemented tungsten carbide, rather than merely applying a surface coating. This ensures consistent material properties throughout the plunger, delivering optimal performance. Tungsten carbide solid plunger are the ultimate solution for complex, extreme operating conditions involving high pressure, severe wear, and intense corrosion. If your application exhibits these characteristics and requires the highest standards for stable, long-term equipment operation, this is the ideal choice.
Features Of Tungsten Carbide Solid Plungers
Specification of Tungsten Carbide Solid Plungers
| Parameter Category | Core Parameters & Description |
| Common Specs & Model | Classified by diameter×length (Φ×L)• Diameter: Φ8mm–Φ200mm (Common: Φ10/16/20/25/30/40/50/60mm)• Length: L50mm–L200mm (Common: L100/150/200mm)• Standard Code: WC-Plunger-Φ×L (e.g., WC-Plunger-Φ30×200mm) |
| Material Grade | • YG6 (6% Co): High hardness, general wear resistance (low impact)• YG8 (8% Co): High wear resistance + medium toughness (universal for pumps)• YG10X (10% Co): High toughness, impact/erosion resistance (slurry medium)• YG12 (12% Co): Ultra-toughness, severe impact/corrosion (harsh working conditions) |
| Hardness | • Overall HRA 86–92 (equivalent HRC 65–78)• YG6: HRA 89–91• YG8: HRA 88–90• YG10X: HRA 87–89• YG12: HRA 86–88 |
| Density | • 14.2–15.0 g/cm³• YG6: 14.7–15.0 g/cm³• YG8: 14.6–14.9 g/cm³• YG10X: 14.4–14.7 g/cm³• YG12: 14.3–14.6 g/cm³ |
| Cobalt Content | • Mass fraction: 6%/8%/10%/12% Co (customizable 4%–15% Co for special demand) |
| Wear Resistance | • Ultra-high: 15–35 times that of alloy steel, 3–6 times that of ceramic• Resist abrasive/erosion wear; service life 8–15 times longer than stainless steel plungers• Adapt to solid particle medium (≤8mm) and continuous high-speed reciprocation |
| Tolerance | • Diameter tolerance: h5/h6/h7 (Common h6: -0.006~-0.018mm)• Length tolerance: ±0.05mm (L≤200mm); ±0.1mm (Roundness/Cylindricity: ≤0.002mm |
| Surface Treatment | • Mirror Polishing: Ra 0.02–0.1μm (working surface, low friction & anti-sticking)• Precision Grinding: Ra 0.1–0.4μm (matching surface)• Optional: Nickel/Chrome Plating (enhanced corrosion resistance, Ra 0.05–0.2μm)• Optional: Diamond Coating (extreme wear resistance for special medium)) |
| Dimensional Accuracy | • Diameter precision: ±0.002–±0.005mm• Straightness: ≤0.002mm/m• End face perpendicularity: ≤0.005mm• Surface roughness: Ra≤0.1μm (standard working surface) |
| Applicable Working Conditions | • Temperature resistance: -60℃–+500℃ (conventional); up to +650℃ (special grade)• Pressure resistance: ≤40MPa (continuous working); ≤60MPa (intermittent working)• Corrosion resistance: Adapt to acid-alkali medium (pH 1–13), seawater, chemical slurry |
Typical Applications
1. Oil and Gas Extraction
Equipment used:
- Drilling mud pumps
- Fracturing pumps
- High-pressure water injection pumps
- Downhole oil pumping units
Operating Conditions:
- Extremely high pressures (up to thousands of psi)
- Media consisting of highly abrasive mud containing sand and rock cuttings or corrosive formation fluids
2. Mining and Quarrying
Equipment used:
- Drilling mud pumps
- Fracturing pumps
- High-pressure water injection pumps
- Downhole oil pumping units
Operating Conditions:
- Extremely high pressures (up to thousands of psi)
- Media consisting of highly abrasive mud containing sand and rock cuttings or corrosive formation fluids
3. Chemical and Process Industries
- Application Equipment: Chemical process pumps, metering pumps and high-pressure homogenisers.
- Operating Conditions: The media are often highly corrosive (e.g. acids, alkalis and salts) and may contain crystalline particles or exhibit high viscosity.
- Reason for Selection: Monolithic tungsten carbide with specialised binders, such as nickel-based alloys, provides excellent corrosion and wear resistance, ensuring long-term sealing and metering accuracy.
4. Mining and Metallurgy
- Application Equipment: Slurry pumps and ore slurry transfer pumps.
- Operating Conditions: The media consists of high-concentration, high-hardness ore particle slurries, which cause extreme abrasion.
- Selection Rationale: Exceptional hardness and wear resistance are critical for withstanding pure abrasive wear conditions and significantly reducing replacement downtime.
Why Choose Our Tungsten Carbide Solid Plungers?
Precision Manufacturing and Quality Assurance
Integral Sintering Process: Using powder metallurgy, integral sintering ensures consistent properties from the core to the surface. This eliminates the risk of coating delamination and delivers superior pressure resistance.
Precision Machining Capabilities: Diamond tool grinding and polishing achieve a mirror-like surface roughness of Ra ≤ 0.025 μm and micron-level tolerances, thereby guaranteeing sealing integrity and precise motion.
Professional Application Design and Customisation
Scientific material selection: We don’t just offer a single product. Based on your specific operating conditions (pressure, medium and impact presence), we recommend the optimal material composition from multiple grades (e.g. YG6, YG8 and YG12x) to achieve the best balance between hardness, toughness and corrosion resistance.
Structural Optimisation: Leveraging our expertise in high-pressure fluid components, we refine details such as plunger geometry and transition radii to minimise stress concentration and significantly extend service life under pulsation or impact loads
Enhanced Equipment Reliability
Integrating our plungers into critical machinery substantially reduces the risk of unplanned downtime caused by wear or failure of core components, safeguarding the continuity and stability of your production processes.
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