Internal Wall Laser Cladding Technology

Internal wall laser cladding technology is primarily used for laser cladding, repair, welding, and hardening of the inner walls of pipelines, chambers, and mold products. Combined with ultra-high-speed laser cladding technology, it can simultaneously process both the inner and outer walls of products such as oil cylinders and columns.

When performing laser cladding repairs on inner walls, it not only reduces the thickness of the coating, decreases the amount of coating material used, and saves costs but also effectively enhances the wear resistance and anti-biting capability of the inner walls.

Advantages of Internal Wall Laser Cladding Technology

1. Improved Production Efficiency: Through laser cladding, a uniform and thin cladding layer can be achieved on the metal surface. Parts after cladding can directly undergo heat treatment, welding, or machining without the need for additional surface strengthening processes, thereby saving significant raw materials and labor.

2. Enhanced Material Utilization: Under the same conditions, laser cladding increases the utilization rate of metal cladding layer materials by 20% to 25% compared to traditional powder cladding.

3. Extended Part Lifespan: Laser cladding technology can produce new coatings with high hardness, high wear resistance, and high corrosion resistance on metal surfaces, extending the service life of parts by 10 to 20 times.

4. Improved Surface Quality: Due to the absence of a molten pool during the cladding process, the surface quality is excellent.

Applications of Internal Wall Laser Cladding Technology

Internal wall laser cladding technology can be used to repair worn or corroded parts, such as engine cylinder liners and bushings, to extend the service life of components. Taking the crankshaft journal as an example, direct laser cladding on its surface significantly improves surface quality. For instance, when a laser-cladded journal is used as a shim in a crankshaft for static balance testing, results show that the bending stiffness of the crankshaft increases by 45%, and the working resistance of the crankshaft after static balance testing is only 56% of that before laser treatment.

In the automotive industry, laser cladding technology is also widely applied. For example, applying a coating on the outer edge of engine pistons can enhance their lifespan and reliability; coating the cylinder head and block surfaces can improve their durability and reliability.