Then to determine if the foundry can achieve expected quality requirements for investment castings.Īlso need to know the production scale and management level about the foundry. So, casting purchasers must understand the foundry production technology and detection methods. It can reach or even exceed the international level of investment castings. However, the silica sol casting process can produce parts with high dimensional accuracy and good surface quality. And it is difficult to produce a high level of investment casting. It is mainly used to produce carbon steel and low alloy steel castings. But the size accuracy and surface roughness are relatively poor. The cost of the water glass casting process is low. It is with high-quality medium temperature pattern material, the whole silicon sol shell, and medium frequency induction melting quick pouring process.
The other is the silica sol casting process. It is a kind of paraffin and stearic acid pattern material with water glass shell technology. Second: Choose the Investment Casting FoundryĪt present, there are two kinds of different production processes of investment casting. That will make casting design and material selection more reasonable, easy to guarantee the casting quality, and can reduce the cost of investment castings. Especially in new product design, if engineers are familiar with the casting process and take part in it. At design details, the designer should design appropriate casting around corners, to help the filling, cooling, and deoxidization. This will benefit for establishing a good temperature distribution and the solidification order, avoiding shrinkage cavity caused by local overheating. It needs easy to mold release, shell making, filling, and cleaning, and also try to achieve uniform wall thickness. The structure of the parts should follow the requirements of investment casting. One of the most features of investment casting is the flexibility of the structure design. That is helpful for the next purchasing job. The casting buyer should learn the design knowledge of the investment casting process.
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