Cast bonded sand is commonly used in industry. As the temperature rises, the bonded sand will exhibit a certain degree of agglomeration. Here, we briefly introduce some reasons for the ease of agglomeration.

The process of casting coated sand involves the use of thermosetting phenolic resins, with potential curing agents and lubricants being formulated into coated sand through a specific coating process. Upon heating, the resin on the surface of the coated sand melts, the molten resin then combines linearly with the resin, quickly transforming into an insoluble structure, thereby solidifying the coated sand.

Fiberglass sand is a type of powder. During the summer, due to higher humidity in the air compared to other seasons, the fiberglass sand itself acts as a curing agent, leading to increased temperatures. The original powdered fiberglass sand re-solidifies, resulting in the phenomenon known as caking. Therefore, cast steel fiberglass sand should be stored in a relatively dark and dry place to prevent this caking from occurring in the sand.

The casting aluminum coating sand mold can be cleaned directly under both cold and hot molds, and the dirt on softened molds can be removed immediately. After cleaning and descaling, the mold is clean and shiny as new, not only improving product quality but also enhancing the efficiency of mold descaling.

1. Hot Mold Cleaning Method: Pour or apply the original solution or diluted solution of the aluminum mold cleaner onto the mold surface. After the mold cleaner reacts with the mold dirt for 1-3 minutes, the dirt on the mold surface will soften and be removed automatically. Then, clean the mold with fresh water again. When rinsing with fresh water, ensure to flush it off before the cleaning solution dries, otherwise the dirt will re-adhere to the mold and become difficult to remove with water.

2. Mold Immersion Cleaning: Add the original solution or diluent of the aluminum mold cleaner to the iron bath, then directly immerse the high-temperature aluminum alloy coated sand mold into the room temperature mold cleaning solution. Soak for about 1 minute, then remove and rinse with water.

3. Cold Mold Cleaning Method: For molds that have not turned black, spray clean water directly onto the mold, allowing the solution to react for 3-5 minutes, then wipe the test mold with a damp cloth. For molds that have turned black, better cleaning results are achieved under high-temperature hot molds.