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Directional Casting Turbine Disk

Directional casting technology is not only suitable for turbine blades, but also for manufacturing turbine impellers. The rodete de turbina is an important rotating component in the turbine. It connects and supports the palas de turbina and withstands extremely high temperatures and stress. Therefore, high-performance materials and advanced manufacturing technologies are crucial for the production of turbine impellers.

  • Propiedades mecánicas
  • Mayor durabilidad
  • Rendimiento a altas temperaturas
  • Resistencia a la fluencia
  • Resistencia a la fatiga
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Advantages of directionally cast turbine Disk

Alloy smelting

High-temperature alloys, such as nickel-based alloys, are melted and kept in a liquid state.

Resistencia a la fatiga térmica

The oriented grain structure enables the impeller to better withstand thermal stress and cyclic thermal loads, extending its service life.

Improved mechanical properties

Grain boundary defects are reduced and the comprehensive mechanical properties of the impeller are improved, including tensile strength, ductility and toughness. Manufacturing process of directional casting turbine impeller.

Preparación del molde

Manufacture high-precision ceramic molds to ensure that the shape and size of the impeller meet the design requirements.

Ámbitos de aplicación

Directional cast turbine impellers are widely used in the following fields:

Motor aeronáutico

High-pressure and low-pressure turbine sections used in high-performance aerospace engines require stable performance under extremely high temperatures and stresses.

Turbina de gas

Gas turbines for power generation and industrial drives, especially operating in high temperature and high pressure environments.

Materials suitable for making turbine impellers

Such as Inconel 713C, Inconel 718, Inconel 738, etc., have excellent high temperature strength and corrosion resistance.

such as Nimonic 90, Nimonic 105, Nimonic 263, etc., have excellent high temperature strength and anti-oxidation properties.

Such as CMSX-4, CMSX-10, etc., specially designed single crystal high-temperature alloys with excellent high-temperature strength and fatigue resistance, suitable for extreme high-temperature and high-pressure working environments.

To prevent turbine impeller failure due to fatigue, the following measures can be taken:

  1. Use high-quality materials with good fatigue resistance, such as Inconel, Nimonic, CMSX
  2. Optimize the design of the impeller to make it more reasonable in structure and more even in force;
  3. Strictly control the process during the manufacturing process to ensure the quality of the impeller;
  4. Conduct regular inspection and maintenance of the impeller, discover potential problems in a timely manner and repair or replace them;
  5. Reasonably control the working conditions of the impeller to avoid excessive load and extreme working conditions.
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