About Foundry Coating's preparation process
Do you know what the formulation process of Foundry Coating is? Let's take a look at it briefly!
The preparation process of water-based paint is roughly to first add refractory materials, bentonite, anhydrous sodium carbonate and other dry materials to the sand mixer, dry-mix for about 10 minutes, then add the binder solution and a little water, and wet-mix for about 20-30 minutes. , Pour the wet material into the bucket, add appropriate amount of water and stir, and then add various additives during the stirring process. Prior to this, the choice of refractory material is very important, which is the aggregate of the coating, and the choice of refractory material depends on the material of the casting.
For the mixing process, production practice has proved that the speed and mixing time of the agitator have a great influence on the coating performance and precipitation. The longer the mixing time, the more uniform the coating is mixed, and it is not easy to precipitate. The coating effect is also very good. From a technological perspective, the speed of the stirrer is required to be no less than 1380r/min, and the stirring time should be greater than 1 hour.
To sum up, it is a brief introduction to the relevant knowledge of Foundry Coating's preparation process.
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