What factors will affect the quality of castings?

2022-12-14

For machine tool cast iron, people engaged in this industry may have a good understanding of it, know where its advantages are, and can solve any accident during operation by themselves without requiring professional personnel to repair it. However, those who are just engaged in the industry may not know how to operate the industry, but can only operate according to its process to reduce failure problems. However, this does not mean that the products produced according to its steps are of good quality. What factors will affect the quality of castings when the foundry is casting?

Generally speaking, the casting manufacturer will build the model and prepare the materials based on the existing model. They believe that the precision of gravity casting and the economy of the whole production process mainly depend on the influence of the casting process. The manufacturing core of many modern casting workshops is machining or automation. However, the sand falling of precision castings is a process with poor working conditions. Therefore, when selecting the modeling method, the foundry should also consider the convenience of on-site sand removal and require the foundry to conduct heat treatment for the special requirements of precision castings.

Due to the large volume and weight of investment casting, the types of aluminum alloys are almost unlimited. These casting parts have general mechanical properties, wear resistance, corrosion resistance and other comprehensive properties, as well as other aluminum alloy forming methods, such as forging, welding and other forming methods. Therefore, in the machinery manufacturing industry, the number of steel billets produced by casting is still very large. After the high-temperature aluminum alloy liquid is poured into the mold, the mold is filled with a large amount of gas, which must be gently discharged from the mold of the precision casting. It is similar to the characteristics of sand that allows gas to pass through, namely gas permeability. These components have defects, such as insufficient space in the hole, fine grain size of sand, clay moisture content and sand mold. The higher the water content, the lower the water content.

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What effect does vacuum have on the properties of die castings?

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