| Inconel Overlaid Valve Seats | ||
| Size Range | 1/2" to 56" (Custom sizes available) | |
| Pressure Rating | PN10-PN420 (Class150-2500) | |
| Body Material | A105, A350 LF2, A182 F304, A182 F316, A182 F321, A182 F51, A182 F53, A182 F55, A182 F60, A182 F44, A564 630 (17-4PH) INCONEL625, INCONEL718, INCONEL825, Monel 400, Monel 500 etc |
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| Core Process/Coating | ENP,HCR,STL6, STL12, STL20,Cr3C2, WC-Co, WC-Cr3C2-Ni, TiC-NiMo, SiC, CrC,ZrO2, Al2O3, Cr2O3, ZnO, TiO, Al2O3-TiO2,STL1, STL6, STL12,Ni60, Ni55, Ni45 etc. | |
| Operating Temperature Range | ≤1200°C | |
| Parameter Category | Core Technical Parameters | Standards for Determining Advanced Technological Level |
| Machining Seat accuracy | ≤ 0.025 mm | ≤ 0.005 mm (Ultra-High Precision) |
| Processing Seat Roundness | ≤ 0.025 mm | ≤ 0.011 mm (Micron-Level ) |
| Seatsconcentricity | ≤ 0.025 mm | ≤ 0.005 mm (Ultra-High Precision) |
| Other supplements | ≤ 0.4 μm | ≤ 0.1 μm (Mirror-Level) |
| Parameter Category | Core Technical Parameters | Criteria for High-End Technical Level |
| Coating Thickness Control | Thickness Uniformity | Thickness deviation at any spherical position ≤±8% (stricter than the general ±10% standard) |
| Thickness Tolerance Range | 100 - 300 μm (common range for wear-resistant layers); special ranges can be noted. No missed spraying for ultra-thin coatings (<10μm) | |
| Coating Adhesion Performance | Surface Hardness | HV 1300+ |
| Bond StrengthBond Strength | ≥80 MPa | |
| Interface PorosityInterface Porosity | <0.5% | |
| Coating Surface Quality | Surface Roughness (Ra) | ≤0.2 µm |
| Spraying Accuracy (Positioning & Coverage) | Spraying Positioning Accuracy | ±0.1mm |
A Surface Enhancement System Engineered for Heat
Our overlay technology focuses on constructing a high-performance barrier in critical zones, with the Welded Inconel overlaid valve seats process being one of our core specialties.
Exceptional High-Temperature Strength and Corrosion Resistance
As the soul of Inconel Overlaid Seats, the Inconel alloy layer provides unparalleled high-temperature performance. It maintains excellent strength and creep resistance in oxidizing or reducing atmospheres at temperatures exceeding 1000°C and offers outstanding resistance to oxidation, sulfidation, and various molten salt corrosions. This makes it ideal for handling hot flue gases, pyrolysis media, and post-combustion effluents.
The Star Material: Application of Inconel 625
Among its many grades, Inconel 625 Overlaid Seats are highly favored for their exceptional all-around properties. They are renowned not only for their superior strength at elevated temperatures but also for their excellent fatigue resistance, resistance to chloride-induced stress corrosion cracking, and broad corrosion resistance spectrum. This makes the Inconel 625 overlay a reliable safeguard against complex high-temperature chemical environments.
Intelligent Balance of Cost and Performance
The economic advantage of overlay technology lies in its philosophy of "using materials where they matter most." The main body of the seat can be made from high-strength, heat-resistant alloy steel to ensure the structural integrity of the load-bearing component at high temperatures. The costly Inconel alloy is then strategically "inlaid" via the overlay process only onto the sealing surfaces that directly face the extreme heat and corrosive media. This composite structure achieves surface performance equal to or better than a solid Inconel seat at a significantly lower cost.
Why Choose TongBall's Inconel Overlaid Valve Seats?
Service-Centric Overlay Strategy
We recommend the most suitable Inconel alloy grade and overlay process parameters based on your specific operating temperature, media composition, and wear mechanism.
Powerful Capability for Repair and Upgrade
This technology is not only for manufacturing new components but is also highly effective for repairing existing Metal valve seats that have failed due to high-temperature wear or corrosion, rejuvenating their performance, often beyond the original state.
Quality Process Ensuring Metallurgical Bonding:
Utilizing advanced automated overlay equipment, we strictly control heat input and inter-pass temperatures to ensure a defect-free metallurgical bond between the Inconel alloy layer and the substrate, eliminating any risk of delamination.
Reliability Proven in the Fires of Service
Our overlaid valve seats have been successfully applied in critical equipment such as gas turbines, heat recovery steam generators, and high-temperature cracking furnaces, demonstrating their stability and reliability in long-term, high-temperature service.
When temperature becomes the most destructive factor in a system, the heat resistance of the valve seat directly dictates equipment uptime and safety. TongBall's Inconel Overlay Technology offers an economical and efficient way to construct a robust sealing line of defense for your valves on the high-temperature front, guarded by a top-tier alloy.
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