High Precision Tungsten Steel Set Carbide Valve Core Valve Sleeve
Product Applications
Pneumatic Hydraulic Equipment | Sliding in Clearance Applications
Tungsten steel, manufactured using advanced powder metallurgy processes, offers exceptional properties including high strength, superior hardness, excellent wear resistance, corrosion resistance, high-temperature stability, and minimal linear expansion coefficient. Its outstanding physical stability, particularly in wear resistance applications, makes it ideal for precision equipment requiring durable, long-lasting components.
Technical Specifications
Custom Engineered Components
Precision-machined tungsten steel valve core and valve sleeve manufactured according to design specifications from the Hydraulic and Pneumatic Center at Huazhong University of Science and Technology:
- Tungsten Steel Valve Core: Φ18-8*13.873*13.873-2*Φ12-19*Φ6-18*M3*27
- Tungsten Steel Valve Sleeve: Φ20*Φ18*1.2-1.2-8-45°*0.5-20°*8
Precision Tolerances
Φ18 Tungsten Steel Valve Core:
Outer diameter tolerance: -0.001, -0.002
Roundness requirement: 0.001
Clearance fit with valve sleeve: 0.003-0.005
Symmetry requirement: 0.008
Φ12 head tolerance: +0.006, -0.017
Φ6 inner hole tolerance: +0.028, +0.010
Coaxiality: 0.008
Φ20 Tungsten Steel Valve Sleeve:
Outer diameter tolerance: -0.020, -0.041
Inner hole Φ18 tolerance: +0.003, +0.002
8 rectangular windows: 1.2*1.2 at ±0.005 tolerance
Angle tolerance: 45°±0.02°
Roundness requirement: 0.001
Coaxiality requirement: 0.005
Material Properties
| Property |
Range |
| Grain Size (μm) |
0.4-2.0 |
| Cobalt Content (% Co) |
6-20 |
| Density (g/cm³) |
13.96-14.85 |
| Hardness (HRA) |
86-93 |
| Flexural Strength (MPa) |
3200-4500 |
| Young's Modulus (GPa) |
570-620 |
Manufacturing Excellence
Zhuzhou Sanxin Cemented Carbide Manufacturing Co., Ltd specializes in research, development, processing, and aftermarket services for cemented carbide materials. With a dedicated technical team and comprehensive manufacturing capabilities, we deliver high-quality tungsten carbide solutions.
- Established in 2003 with two main factories built in 2007
- ISO 9001:2015 certified since 2017
- High-tech Enterprise certified in 2017
- Foreign trading license obtained in 2017
- Confirmed as supplier of CLEP in 2021
- Over 20 patent certificates
Our business philosophy: "Quality and customer first", "Samples available", "Punctual delivery", "Mutual benefit", "Focus on innovation", "Service creates value". Sanxin delivering carbide value.
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