Anti-Wear Coatings by China Suppliers - HVOF Spraying Factory for Enhanced Durability in All Industries
Product Description
Product Specifications
| Process Type | High-Voltage High-Frequency Flame (HVOF) Coating |
| Common Coating Materials | Tungsten carbide cobalt (WC-Co), tungsten carbide chromium cobalt (WC-Cr-Co), nickel-based alloys (Ni60/Ni60A), cobalt-based alloys |
| Coating Thickness | 0.03-0.5mm (customizable to workpiece requirements) |
| Hardness | HRC75 |
| Bonding Strength | ≥70MPa |
| Porosity | ＜1% |
| Operating Temperature Resistance | -60℃ ～ +650℃ |
| Applicable Substrate Materials | 42CrMo, 35CrMo, 2Cr13, carbon steel, stainless steel, alloy structural steel |
| Machining Accuracy | Precision grinding after coating; dimensional tolerances up to ±0.01mm |
Product Features
1. Superior Wear and Erosion Resistance
The coating boasts a hardness of HRC75, resisting high-speed erosion from rock cuttings and silica sand in drilling mud. Its wear resistance is 8-15 times that of ordinary quenching and electroplating processes, significantly extending the service life of components.
2. Extremely Dense and Corrosion-Resistant
With a porosity of <1%, there are no leakage channels, effectively blocking corrosive media such as oil and gas, drilling fluids, and saline water, preventing substrate rust and corrosion failure.
3. Strong Bond and No Peeling
The coating achieves a high-strength bond with the substrate, remaining resistant to peeling, cracking, and flaking even under high-pressure impact and high-frequency opening and closing conditions, ensuring maximum stability.
4. Excellent High-Temperature Resistance
It can operate continuously in environments ranging from -60℃ to +650℃ without softening or deformation, making it suitable for high-temperature oil and gas well operations.
5. Controllable Dimensional Accuracy
Precision spraying combined with subsequent fine grinding processes strictly guarantees the assembly accuracy of components, meeting the high-precision sealing requirements of petroleum machinery valve assemblies.
6. Excellent Adaptability to Various Working Conditions
Simultaneously withstands multiple extreme working conditions including wear, corrosion, impact, and high temperatures, perfectly matching the core component requirements of oil drilling, mud pumps, and manifolds.
7. Outstanding Overall Cost-Effectiveness
Reinforced components extend lifespan by 5-10 times, significantly reducing equipment maintenance and downtime replacement costs, and improving operational efficiency.
Product Packaging
- Inner: Rust-proof protective bag
- Outer: Fumigation-free plywood case or export carton
- Shockproof, moisture-proof and anti-corrosive, ensuring safe ocean transportation.
Product Transportation
- Ocean Transportation
- Overland & Rail Services
Frequently Asked Questions
What is High Velocity Oxygen Fuel (HVOF) coating?
HVOF is an industrial surface engineering process that uses fuels (like kerosene or propane) and high-pressure oxygen to generate an ultra-high-speed flame (exceeding Mach 5). High-performance powders, such as tungsten carbide, are fed into the flame, melted, and sprayed onto the workpiece surface to form a dense, wear-resistant, and corrosion-resistant coating.
What are the standard specifications for HVOF coatings?
The coating achieves a hardness of HRC75, a bonding strength of ≥70MPa, and a porosity of less than 1%. The operating temperature resistance ranges from -60℃ to +650℃. The standard coating thickness is 0.03-0.5mm, which can be customized according to workpiece requirements.
Which substrate materials are compatible with HVOF spraying?
Common applicable substrate materials include 42CrMo, 35CrMo, 2Cr13, carbon steel, stainless steel, and alloy structural steel.
How does HVOF coating protect petroleum machinery core parts?
It provides superior wear and erosion resistance (8-15 times that of quenching and electroplating) and eliminates leakage channels with a porosity <1%. This prevents corrosion and wear on components like plugs, valve seats, gates, and valve cores under extreme high-pressure, acidic, and high-temperature conditions.
What are the packaging and transport standards for these components?
Components are packaged in rust-proof protective bags inside and fumigation-free plywood cases or export cartons outside to ensure safe, moisture-proof, and shockproof transit. Standard shipping methods include ocean, overland, and rail transportation.