Exhaust Valves and Valve Seats Restoration
We offer professional valve and seat restoration services for a wide range of marine engines. Our technology significantly extends the service life of these critical components, ensuring their reliability and efficiency.
We restore valves and seats for:
- Low-speed engines
- Medium-speed engines
- High-speed engines
Restoration is performed by automatic surfacing using high-quality flux-cored wires of Stellite and Nimonic class.
Restoration Technology Process Stages
Our valve and seat restoration process includes the following key steps that guarantee high quality and durability:
1. Part Preparation:
- Thorough cleaning and defect detection of the component
- Preliminary machining to remove damaged and burnt metal from working surfaces
2. Multi-layer Automatic Surfacing:
- Valve face surfacing: Heat and erosion-resistant steel welding wires are used
- Underlayer of seat and valve working part: Low-alloy welding wire surfacing to prepare seat connection surfaces
- Final surfacing with hardening materials: Automatic surfacing with Stellite or Nimonic class flux-cored wires in strict accordance with technological instructions
3. Heat Treatment:
- Heat treatment to stabilize metal structure and impart necessary mechanical properties
4. Final Machining:
- Final machining to bring the part into compliance with specified geometric dimensions and tolerances
- Grinding of seat and valve sealing belts to ensure perfect sealing
5. Control and Packaging:
- Final quality control of completed work
- Preservation and packaging of finished components
Why Choose Our Restoration?
Valve and seat restoration using Stellite and Nimonic surfacing technologies significantly surpasses repair without surfacing, providing parts with enhanced wear resistance and heat resistance, which is critically important for operation in high temperature and aggressive diesel engine environments.