H. Power Science Research Institute Co., Ltd faced issues with the side rail damage of the hydroelectric fan arc gate. Frequent operation during the main flood season led to wear due to contact friction, and the corrosion caused by pollutants from upstream factories exacerbated the problem, resulting in leakage at the side seal of the arc gate. This issue posed a serious threat to the safe and economical operation of the hydroelectric unit.
The repair work for the damaged area of the fan arc gate side rail faced numerous challenges, including precise identification of the damaged area, selection of repair materials, optimization of repair processes, and quality control during the repair process.
Shanxi Guosheng Laser Technology Co., Ltd., as the provider of laser cladding repair technology, participated in the repair work of the damaged area of the hydroelectric fan arc gate side rail and proposed a professional technical plan.
Shanxi Guosheng Laser used laser cladding repair technology, which has the following advantages:
- The laser cladding layer is completely metallurgically bonded with the base material, ensuring the stability and durability of the repair layer.
- The heat-affected zone is small, with a low base material dilution rate, protecting the original properties of the base material.
- The cladding layer has a high cooling rate, resulting in a dense structure and fine grains, improving the quality and performance of the cladding layer.
- The laser cladding technology is highly controllable and can be automated, ensuring the stability of the cladding layer quality.
During the project execution, Shanxi Guosheng Laser faced and overcame the following challenges:
- Precise determination of the repair area and assessment of the damage.
- Selection of appropriate repair materials and optimization of the cladding process to adapt to specific working environments.
- Ensuring safety and quality control during the repair process.
Pre-work for G.S. Laser technical personnel: rough polishing
Pre-work for G.S. Laser technical personnel: groove polishing
G.S. Laser Technical personnel and equipment: Mobile laser cladding equipment
G.S. mobile laser cladding equipment for cladding processing
Shanxi Guosheng Laser took the following measures to address the challenges:
- Worked closely with the client to determine the repair area and conduct a detailed damage assessment.
- Chose high-hardness FeCrNi martensitic stainless steel alloy material as the repair material to ensure the cladding layer has excellent corrosion resistance.
- Used a mobile laser cladding equipment system, combined with robot programming for the cladding path, to ensure precision and uniformity in the cladding process.
- Implemented a strict quality control process, including dimensional measurement before and after cladding and non-destructive testing to ensure the repair quality meets the standards.
Shanxi Guosheng Laser successfully completed the laser cladding repair work for the damaged area of the hydroelectric fan arc gate side rail, providing high-quality repair services and committing to no detachment of the cladding material under normal operation conditions throughout the life cycle of the unit and guaranteeing no quality issues within one year.
From a third-party perspective, Shanxi Guosheng Laser demonstrated professional technical capabilities and efficient project management in the laser cladding repair project of the hydroelectric fan arc gate side rail damage area. By adopting advanced laser cladding repair technology, it not only solved the urgent problem for the client but also provided a long-term and reliable solution, reflecting its professional strength and service quality in the field of laser cladding.