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Green sand casting process original sand selection and casting characteristics
- Oct 29, 2018 -

The green sand casting process has many advantages in practical applications. It not only has high strength, but also has good fluidity, and can ensure better casting quality in casting operation. The green sand casting process has a higher pouring temperature of the molten steel in the production process, so the requirements of the original sand for the refractoriness are also high.


It can be seen that in order to ensure the casting quality of the green sand casting process, we need to choose the suitable raw sand. It is generally required to pay special attention to the particle size and distribution of the original sand. For example, special artificial sand with a refractoriness of up to 1900-2000 °C is used, which not only has good grain shape, but also effectively prevents chemical sticking, and has a small angular coefficient and a moderate particle size, which can make the sand grain closer to a circle, and the resin is added in the same amount of resin. The thicker film is beneficial to the strength of the sand core.


The green sand casting process has a wide application range and high production efficiency. Resin casting using sand-type hard and resin sand castings has better surface smoothness, higher dimensional tolerances, and lower surface and internal molding defects. The process can cast suitable products to produce large iron castings of different weights.