Service

During operation, the working surfaces inside a valve body can experience wear, resulting in dimensional changes that may affect sealing performance, assembly accuracy, and overall valve operation. For this project, the area requiring restoration was a Ø110 mm bore located deep inside the valve body, making access and surface repair ...

Phuong Dong has completed the restoration of a Francis turbine runner D840 using PTA (Plasma Transferred Arc) and Laser Cladding technologies, with 410NiMo and Stellite 6 welding powders. After prolonged operation, the turbine runner developed areas affected by wear, corrosion, and cavitation erosion. Phuong Dong carried out inspection and surface ...

Phuong Dong has carried out numerous equipment restoration projects for hydropower plants, including the turbine runner of Alin B2 Hydropower Plant. After a period of operation, the turbine runner developed various types of damage, including wear, chipping, blade deformation, and corrosion. Phuong Dong carried out inspection, machining, and restoration using ...

The turbine runner is a critical component of a hydropower unit, directly exposed to the force of water during operation. After years of service, turbine runner blades can suffer from wear, cavitation, corrosion, and long, deep cracks, affecting the equipment’s durability and operating performance. In this project, Phuong Dong restored ...

In the automotive industry, stamping dies play a critical role in determining product quality and production efficiency. Because they operate continuously under high mechanical loads, areas such as cutting edges, radii, and forming surfaces are subject to significant wear. These working areas therefore require surface hardening to ensure die durability ...

After years of operation in a hydropower environment, the blades of a Francis turbine runner are often affected by cavitation erosion and corrosion, leading to material loss, reduced turbine efficiency, and a shorter service life. In this project, PHUONG DONG successfully restored a Francis turbine runner with a diameter of ...

The turbine shaft seal ring is a critical component in hydropower generating units. After long-term operation, it is often subject to wear, leading to reduced sealing performance and lower operating efficiency. Instead of replacing the component at a high cost, Laser Cladding provides an efficient solution to restore the original ...

In the previous section, we presented real-world images of internal bore Laser Cladding across various component sizes and geometries. In this section, Phuong Dong continues to share practical cases involving specific technical requirements, demanding high precision and extensive hands-on experience. Laser Cladding Application Cases • Keyway Feature Components In this ...

Internal bore cladding is an advanced technological solution used to repair and reinforce the inner surfaces of various mechanical components. This process utilizes a high-power laser beam to create a metallurgically bonded coating layer with the base material, enhancing wear resistance, corrosion resistance, and significantly extending the service life of ...

In hydropower plants, the turbine runner is a critical component that directly determines the efficiency and operational stability of the entire unit. During operation, it is exposed to high-pressure water containing sand and various impurities, leading to surface wear and cavitation over time. If not repaired in a timely manner, ...