Below we briefly describe how to manufacture turbine blades for aero-engines: Process porcelain clay, break the porcelain clay to make the inner core of the turbine blade. Workers check and modify the shaped porcelain clay models one by one, and the finished porcelain clay models will first be sintered into a fused silica ceramic core. Turbojet engines require hollow turbine blades. only a high-quality ceramic core is the best core material for lost wax casting. It can remain stable when casting metal, and can be easily dissolved by chemical processes after the casting is cooled. , Leaving the required air channels in the blades. The porcelain clay model waiting to be processed is wrapped with beeswax on the outside for lost-wax casting to obtain turbine blades. The porcelain clay model can be made into a very small cross-section, and the deformation during processing is small.
The above-mentioned porcelain clay model is actually the air passage in the blade. When the engine is running, air passes through it, so as to cool the turbine blades and maintain stable operation. Prepare the casting interface. These interfaces will be equipped with two to four blades, which can improve efficiency when casting molten metal. In wrapping the ceramic core with beeswax, the function of beeswax is to form a cavity in the casting mold. After installing the beeswax blades on the casting interface, you can see that the beeswax blades that have been wrapped with the ceramic core look strong in structure, but they are all metal runners during casting, and the blades are actually very small. Final processing of the blades so that the molten metal can fill the cavity without causing casting blisters. At this point, the casting model was finally processed.
The next step is to wrap these cast models with porcelain clay to make pottery models. Workers install the casting model on a rotating machine. Use the manipulator to rotate in the clay liquid to make it evenly wrap any part of the model. only in this way can it be considered qualified. After adding it into a special wind box, spray porcelain clay on the surface to form a thick shell. Let it air dry. After that, the casting model is cast in the precision casting workshop. The first step is to heat up and burn the porcelain clay wrapped around the cast model into a ceramic model. At the same time, the beeswax inside is discharged to form a casting cavity. The worker took out the casting model. These models will then cast special alloy solutions. Each model requires a special furnace for processing. The model production temperature of large parts is very high. Finally, the blades produced need to be X-ray inspected. Each blade must be inspected from multiple angles to prevent any defects. X-ray photos, you can see the cavity inside the blade. The entire turbine blade production process is very complicated, completely surpassing the jewelry manufacturing industry, and this is only a small part of the "diamond in the industrial crown"-aero engine manufacturing. The complete blade design and manufacturing include: blade structure design, blade strength design, blade material design, and blade manufacturing process design. Failure mode analysis during blade use, etc. The content we show today is only a small part. Judging from the development history of aero-engine turbine blades, the trend of integration of materials, processes and design has become more and more obvious. Engine design develops from a low level to a high level. The same is true for blade material design. Different design stages, different design requirements, different design methods, and different materials and manufacturing processes are used.
Kefen Industrial Co., Ltd. Is a high-tech enterprise specializing in the manufacture and sale of precision moulding, tooling and fixtures for aviation products, automobiles and locomotives; aircraft blade molds and measuring tools.The company is mainly engaged in precision molds for various parts of aero-engines, and has 20 years of design and production experience in the field of investment casting（lost wax）molds. If you need any precision molds related to compressors, please provide us with 3D data drawings, and we can design and produce the high accuracy molds you need for you. Welcome to our company for inspection!