Inside every engine, the valve plays a critical role—it governs the intake of air and the discharge of exhaust gases. Although small, valves directly affect:

•  Engine compression and overall efficiency
•  Fuel consumption and emissions
•  Starting performance and combustion stability
•  Durability under high-load and high-speed conditions

When a valve loses its precise dimensions or sealing ability, the engine’s performance drops sharply. In severe cases, valve failure can lead to major engine breakdowns.

Simply put, healthy valves are essential to the heartbeat of an engine.

What Causes Valve Wear? The Hidden Challenges Behind the Problem

Valve wear is not just “normal aging.” Industry data shows that several complex factors contribute to valve damage:

1. Thermal fatigue at extreme temperatures

Temperatures around the exhaust valve can exceed 700°C, causing micro-cracks over time.

2. Worn valve stems and stem-to-guide clearance

Excessive clearance leads to unstable motion and abnormal vibrations.

3. Leakage caused by worn sealing surfaces

Once the valve cannot seal tightly, combustion efficiency drops instantly.

4. Impact and micro-erosion under high-speed operation

Heavy loads and long-term high RPM use further accelerate surface deterioration.

If not repaired in time, valve wear will worsen rapidly, eventually harming the entire engine.

Laser Cladding: The Modern Solution for High-Performance Valve Restoration

Laser cladding has become one of the most promising technologies in valve remanufacturing.
What sets it apart is its ability to restore and upgrade the valve at the same time.