Water-based coating preparation process is generally the first refractory materials, bentonite, anhydrous sodium carbonate and other dry material added to the sand mixer, dry mix for 10 minutes or so, after adding the binder solution and a little water, wet mixing about 20-30 minutes , the wet material into the bucket, add the appropriate amount of water after mixing, and finally in the mixing process by adding a variety of additives. Prior to this, the choice of refractory material is critical, it is the aggregate of paint, the choice of refractory material according to the casting material.
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