Hydropower Industry

Operating Challenges and Wear Problems in Closed Impellers Closed impellers operate under high pressure and high flow velocity, frequently subjected to severe mechanical wear and cavitation—especially along the outer rim and discharge areas… Closed impellers operate under high pressure and high flow velocity, frequently subjected to severe mechanical wear and ...

Generator Shaft Journal and Wear Condition The shaft journal is a critical component in a generator, responsible for centering and transmitting the rotational motion between the rotor and its connected parts. During continuous operation, it is subjected to high loads, friction, vibration, and elevated temperatures, leading to surface wear, erosion, ...

In industrial stamping press systems, the crankshaft plays a central role — converting the motor’s rotational motion into the up-and-down linear motion of the punch. This enables the press to perform accurate and continuous stamping operations during production. Importance of the Crankshaft The crankshaft endures heavy impact loads, repeating millions ...

In power transmission systems, the coupling is a critical component that connects two shafts and transmits torque. After long periods of operation, the inner surface of the coupling bore often becomes worn, causing vibration and reduced efficiency. At PHUONG DONG, we apply Laser Cladding technology to restore the inner bore ...

Damage Condition During operation, pump casings are exposed to high pressure, friction, and corrosive environments. Critical areas such as bearing seats, flanges, and flow-contact surfaces often suffer from wear, pitting, cracks, or deformation. If not repaired promptly, these damages can cause leakage, reduced efficiency, or even complete pump failure. Laser ...

Restoring pump impellers with metal 3D printing technology (Laser Metal Deposition – LMD, also known as Laser Cladding) is a modern method that rebuilds worn, eroded, or locally corroded parts by adding precise layers of metal material. This technology enables accurate layer-by-layer deposition to restore the original geometry of the ...

In industries such as thermal power, oil & gas, cement, and steel production, valve cages operate under extreme conditions — high temperature, high pressure, and continuous wear and corrosion. Over time, the surface of these components deteriorates, leading to reduced efficiency, safety risks, and higher maintenance costs. Common Problems of ...

What is a Journal Bearing? A journal bearing (also known as a sleeve bearing) is a critical mechanical component used to support and guide rotating shafts in industrial machinery. Over time, the bearing surface is prone to wear, scratches, or cracks due to heavy loads, high rotational speeds, and harsh ...

During operation, bearing housings are often subjected to heavy loads and friction, leading to wear, pitting, cracking, or deformation. These issues reduce service life and negatively impact the overall performance of industrial equipment. At PHUONGDONG INDUSTRY, we apply advanced Laser Cladding technology to restore bearing housings with exceptional precision and ...

In industrial pump systems—especially in hydroelectric, thermal power, and oil & gas plants—the impeller plays a vital role in maintaining stable operation and high performance. During long-term use, impellers are exposed to abrasive particles, chemical corrosion, and cavitation, leading to surface wear, pitting, or cracking. These damages reduce pump efficiency, ...