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Centrifugal fan impeller and its copper casting
- Sep 05, 2018 -

Copper castings of centrifugal fan impeller, its centrifugal fan impeller can be said to be an important part of the fan, and is an irreplaceable component, so should pay enough attention to avoid affecting the normal use and use of the fan. Moreover, the centrifugal type refers to axial air inlet and radial air outlet, and uses centrifugal force to perform work, thereby achieving the purpose of increasing air pressure, and the magnitude of centrifugal force is determined by the impeller speed and outer diameter.

 

Centrifugal fan impeller, which can be reclassified. If it is divided from the angle of the blade, it can be divided into three types: forward tilting, backward tilting and radial type. As for which one to choose, the actual situation and Use the requirements to decide.

 

Copper castings of centrifugal fan impeller, which is essentially a copper casting, so in the production process, it is for the casting process. In the specific casting method, the lost wax casting is more, and the process flow is for:

 

Step 1: Make a prototype sculpture of the product;

Step 2: The silicone is opened to make a mold;

Step 3: Making a resin prototype, after the silicone mold is completed, the resin embryo body of the sculpture prototype can be prepared;

Step 4: trimming the resin body, such as grinding and texture treatment;

Step 5: Make a silicone mold again, that is, re-form the finished resin body into a silicone mold;

Step 6: Making a paraffin prototype, and injecting the heated paraffin into the silicone mold by pressure to produce a wax embryo for copying the true shape of the product;

Step 7: Trim the paraffin prototype to ensure that it does not affect the product shape and surface effects;

Step 8: sand mold production and casting, pouring copper liquid into the ceramic shell and then cooling and peeling to obtain the product crude embryo body;

Step 9: Trimming and processing of copper castings, including cutting, grinding, heat treatment, shaping, machining and polishing;

Step 10: Surface treatment and protection treatment of copper castings, such as waxing.

 

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