VACUUM INVESTMENT CASTING PRODUCTION LINE FOR INCONEL ALLOY COMPONENTS

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VACUUM INVESTMENT CASTING PRODUCTION LINE FOR INCONEL ALLOY COMPONENTS

The Vacuum Investment Casting Production Line is specifically designed for manufacturing Inconel alloy turbine blades, delivering high dimensional accuracy, superior mechanical properties, and excellent metallurgical quality required for aerospace, power generation, and other high-performance applications.

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The production line consists of the following equipment:
1. Wax Injection Machine Main Function: Injects molten wax into precision molds to produce wax turbine blade patterns with smooth surfaces and excellent mold filling characteristics.
2. Ceramic Slurry Mixing/Dipping Machine Main Function: Maintains the uniformity and stability of the ceramic slurry used for dipping wax patterns, ensuring an even and consistent ceramic shell coating.
3. Robotic Slurry Dipping and Sand Stuccoing System Main Function: Automatically performs the ceramic slurry dipping and sand stuccoing processes to build the ceramic shell around the wax pattern with high consistency and repeatability.
4. Sand Stuccoing Machine Main Function: Evenly applies refractory sand or stucco material in a "rainfall" pattern onto the wax patterns after slurry dipping, forming a heat-resistant ceramic shell suitable for the investment casting process.
5. Shell Drying Chamber Main Function: Dries the ceramic shell thoroughly, eliminating residual moisture to prevent shell cracking during dewaxing and firing.
6. Dewaxing Furnace Main Function: Removes wax from the ceramic shell using high-pressure saturated steam, preserving shell integrity, shortening the dewaxing cycle, and improving the overall efficiency of the investment casting process.
7. Shell Firing Furnace Main Function: Sinter-fires the ceramic shell to remove any remaining wax residues and strengthen the mold, ensuring adequate shell strength and the proper mold temperature before pouring molten metal.
8. Robot for Vacuum Furnace Loading and Unloading Main Function: Automatically handles loading and unloading of molds and castings in high-temperature environments, including shell firing furnaces and vacuum casting furnaces, where temperatures may reach 1,200°C.
9. Vacuum Investment Casting Furnace

Main Function: A dedicated high-vacuum investment casting furnace designed for melting and casting Inconel alloys. The vacuum environment prevents oxidation, preserves alloy composition, and produces castings with high dimensional accuracy, excellent mechanical properties, and minimal defects.

The furnace is capable of producing columnar-grain (E-type) crystal structures and is designed for future upgrading to Directional Solidification (DS) casting technology.
10. Vacuum Heat Treatment Furnace Main Function: A high-vacuum heat treatment furnace operating under extremely low pressure (typically below 5 × 10⁻⁵ mbar) to minimize oxidation, decarburization, and gas contamination during the heat treatment of special alloys such as Inconel.
11. Shell Knockout Machine Main Function: Uses a high-frequency pneumatic hammer to remove the ceramic shell from the casting after the casting process has been completed.
12. Cutting Machine Main Function: Separates finished castings from the casting tree (cluster).
13. Water Jet Cleaning Machine Main Function: Removes burrs and smooths the surface of cast components after cutting.
14. Fluorescent Penetrant Inspection (FPI) and Magnetic Particle Inspection (MPI) Equipment Main Function: Detects surface cracks and other surface defects in cast components.
15. X-ray Inspection System Main Function: Detects internal defects such as gas porosity, shrinkage cavities, and other internal discontinuities within castings.
16. Universal Tensile and Compression Testing Machine Main Function: Evaluates the mechanical properties of cast components through tensile and compression testing.
17. Optical Emission Spectrometer (OES) Main Function: Analyzes the chemical composition of the casting material to verify compliance with alloy specifications.
18. Auxiliary Systems

Including, but not limited to:

  • Compressed air supply system
  • Argon gas vaporization and supply system
  • Other supporting utility systems required for stable and continuous operation of the production line.