Refractory Metal Turbine Blade

Introduction to Quality：

In order to improve the performance of turbine blades, we use some special treatment technologies, such as coating technology, cooling technology, etc. High quality coating technology can improve the high temperature resistance and oxidation resistance of the blade, and cooling technology can reduce the temperature of the blade and improve the service life of the blade.

Process and performance introduction：

Turbine blade is one of the most critical parts of aero-engine, which is located in the parts with the highest temperature, the most complex stress and the harshest environment in the engine. The following are our turbine blade manufacturing processes and their advantages:

• Investment casting: Investment casting, also known as lost wax casting, is a casting method that uses fusible materials to make accurate patterns, coated with refractory materials to make shells, and melts to get hollow refractory shells. The shells are roasted and poured into molten metal, and the shells are knocked off after cooling and the castings are obtained. It usually has the following advantages:
• High casting precision: good surface quality, size accuracy IT11-IT14, surface roughness Ra25-3.2 microns;
• Complex castings can be cast: it can be used to cast complex thin-wall castings that are difficult to sand casting or mechanical processing;

Wide applicability: suitable for all kinds of alloy castings;

• Flexible production batch: production batch is not limited.

• Single crystal blade casting: single crystal blade is a casting blade with only one grain, which eliminates all grain boundaries on the blade and avoids the generation of crack sources. In addition, effective composite cooling method is adopted for the blade to reduce the surface temperature of the turbine blade in the working process and cope with the gradually increasing turbine inlet temperature, which greatly improves the working capacity and its own life. Its advantages mainly include:
• Good high temperature performance: An important characteristic of single crystal blade is that it can maintain good strength and stability in high temperature environment, which enables the engine to operate at higher temperature and improves the efficiency and thrust of the engine.
• Strong corrosion resistance: Single-crystal blades are usually made of superalloys, which have good corrosion resistance and are able to resist corrosive media in gas, prolonging the service life of the blades.
• Long fatigue life: The crystal structure of the single crystal blade makes it have a high fatigue life and can withstand the cyclic load in the long-term operation of the engine.
• Improved engine performance: Due to the high temperature performance and strength advantages of single crystal blades, the use of single crystal blades can improve engine thrust and efficiency while reducing fuel consumption.

In addition to the above processes, the fabrication of turbine blades may also involve other processes, such as forging and 3D printing. Each of these processes has its own characteristics and advantages, and the specific application depends on the design requirements of the blade, material characteristics and production batch and other factors.

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