Titanium alloy sheets are playing an increasingly vital role in the power generation sector, offering reliable material solutions that enhance equipment durability and operational efficiency. Their superior corrosion resistance, high strength-to-weight ratio, and excellent thermal stability make them indispensable for critical applications.
Condenser Tube Sheets and Cooling Tube
In both thermal and nuclear power plants, condenser reliability is paramount for overall plant efficiency. Utilizing industrial pure titanium sheets (e.g., Gr.1, Gr.2) as tube sheets, combined with thin-walled titanium welded tubes, enables the construction of full-titanium or composite condensers. This approach effectively withstands corrosive cooling water environments, such as seawater or brackish water, preventing common issues like pitting, stress corrosion cracking, and leakage associated with traditional materials, thereby significantly extending service life and reducing maintenance costs.
FGD System Lining
Wet flue gas desulfurization (FGD) systems operate in highly corrosive environments characterized by low temperatures, high humidity, and elevated chloride ion concentrations. Employing titanium alloy sheets resistant to reducing acids (e.g., Gr.7, Gr.12) as lining materials provides a robust alternative to traditional carbon steel with protective coatings or fiberglass solutions. The titanium lining directly withstands acidic media, substantially extending maintenance intervals and minimizing unplanned downtime.
Steam Turbine Blades and Component
The low-pressure last and penultimate stage blades of large steam turbines, especially in nuclear half-speed and ultra-supercritical thermal units, demand exceptionally high-performance materials. Blades manufactured from high-strength titanium alloys like Ti-6Al-4V achieve significant weight reduction while maintaining mechanical strength. This facilitates the design of longer blades, improving steam flow efficiency, unit output, and operational safety.
Nuclear and Other Power Field
Beyond conventional condensers in nuclear power plants, the corrosion and radiation resistance of titanium alloy sheets grant them potential for use in specialized equipment like spent fuel processing. Furthermore, in emerging sectors such as geothermal and marine energy (e.g., Ocean Thermal Energy Conversion), the outstanding corrosion resistance of titanium plates makes them an ideal choice for key components like heat exchangers.
Core Advantages in Practical Application
The value of titanium alloy sheets in power equipment is underscored by several key performance advantages:
Long-term Corrosion Resistance
They exhibit remarkable stability, particularly in chloride-ion environments, resisting pitting and stress corrosion.
Lightweight and High Strength
With a density approximately 57% that of steel but comparable strength, they contribute significantly to equipment lightweighting.
Excellent Thermal Stability
These sheets demonstrate good resistance to water droplet erosion and impact in wet steam and complex two-phase flow environments.
Future Outlook
As the power industry continues to prioritize higher equipment reliability, efficiency, and environmental standards, the application of titanium alloy sheets is deepening. Offering an effective pathway to address material challenges in harsh operating conditions, the breadth and depth of titanium's applications across traditional thermal and nuclear power to new energy fields are poised for continued expansion.
