Corrosion and fatigue resistance
Posted: Wed Feb 12, 2025 9:31 am
Cobalt alloys have good corrosion resistance and fatigue resistance. Under the harsh working conditions of steam turbine blades, cobalt alloys can effectively resist the erosion of corrosive substances in the steam and extend the service life of the blades. At the same time, their high fatigue strength can also ensure the stable operation of the blades under long-term high load operation.
5.3 Excellent welding characteristics
Cobalt alloys have good welding properties, so it is easy to use welding technology in the manufacture and repair of blades. The strength and tightness of the weld can be guaranteed, which improves the overall performance and service life of the blades.
5.4 Wear resistance
Cobalt alloys also have excellent wear resistance. During the operation of steam turbine blades, they must withstand abrasion and wear caused by impurities and particles in the steam flow. The high hungary number data wear resistance of cobalt alloy can reduce blade wear and extend their service life.
6. Specific application of cobalt alloy in turbine blades
6.1 Blade material
Cobalt alloy can be directly used as a material for manufacturing turbine blades and hubs, especially suitable for manufacturing blades under high temperature, high pressure and high corrosion conditions. Cobalt alloy blades with complex shapes and high precision can be manufactured through precision casting, forging, CNC machining and other processes.
Hard cobalt alloy sheets or strips are induction brazed onto SUS410Cb turbine blades to improve the blades' wear resistance and erosion resistance. Erosion strips are usually made of Co 6 and Co 6B.
5.3 Excellent welding characteristics
Cobalt alloys have good welding properties, so it is easy to use welding technology in the manufacture and repair of blades. The strength and tightness of the weld can be guaranteed, which improves the overall performance and service life of the blades.
5.4 Wear resistance
Cobalt alloys also have excellent wear resistance. During the operation of steam turbine blades, they must withstand abrasion and wear caused by impurities and particles in the steam flow. The high hungary number data wear resistance of cobalt alloy can reduce blade wear and extend their service life.
6. Specific application of cobalt alloy in turbine blades
6.1 Blade material
Cobalt alloy can be directly used as a material for manufacturing turbine blades and hubs, especially suitable for manufacturing blades under high temperature, high pressure and high corrosion conditions. Cobalt alloy blades with complex shapes and high precision can be manufactured through precision casting, forging, CNC machining and other processes.
Hard cobalt alloy sheets or strips are induction brazed onto SUS410Cb turbine blades to improve the blades' wear resistance and erosion resistance. Erosion strips are usually made of Co 6 and Co 6B.