High-Temperature Resistance of 12Cr Steel Bolts and Bladesfor Steam Turbine
Introduction
The application of steam turbine technology is across numerous fields, and the most common applications for these turbines are for the generation of electricity. Due to their broad applicability, the turbines need to be made from materials that can withstand the stresses created from their applications. 12Cr steel is a common material of choice for the steam turbin bolsters and blades due to its high temperature resistance.
Properties of 12Cr Steel
12Cr steel is a type of modularized martensitic steel developed for applications requiring enhanced resistances to heat and chemical corrosion, especially in regard to sulfuric acid. It provides higher chromium content than most material alloys, which gives it increased heat resistance. This makes it an ideal choice for steam turbine components that are regularly in contact with high temperature elements. 12Cr steel also has increased tensile strength, which makes it a suitable material for the fabrication of critical components such as the blades and bolters.
Benefits of 12Cr Steel in Steam Turbines
The use of 12Cr steel as the material of choice for steam turbine components provides many benefits. First, the improved heat resistance of 12Cr steel ensures that the parts can withstand higher operating temperatures for longer periods of time. This allows for increased efficiency and longer operating lifecycles for the turbine. Additionally, the improved corrosion resistance of 12Cr steel prevents the components from being damaged through oxidation and other chemical reactions.
Furthermore, due to the improved tensile strength of 12Cr steel, the blades and bolters can remain in a stable form under higher operational pressures. This means that the components will not bend or break under excessive force, which would lead to decreased efficiency. Additionally, as 12Cr steel has improved machinability, it is possible to increase the efficiency of the components through precision machining.
Conclusion
The use of 12Cr steel as the material of choice for steam turbine blades and bolters is a highly advantageous decision. Due to the improved heat and chemical resistance of the material, it is possible to keep the components in shape under higher temperatures and pressures while preventing corrosion. Additionally, the improved tensile strength and machinability of the material allows for precision machining and greater efficiency.
Overall, the use of 12Cr steel in steam turbine components provides numerous benefits and allows for longer longevity of the parts in relation to many other materials. This makes 12Cr steel an ideal choice for bolters and blades for steam turbines.
