Use of Foundry Gilsonite

Foundry Gilsonite is a specialized form of Gilsonite, a natural asphalt product, that is used in the foundry industry as a carbonaceous additive. It is known for its unique properties that enhance the performance of foundry molds and cores. Let’s explore the features, benefits, and applications of Foundry Gilsonite.


  1. Improved Mold and Core Strength:
    When Foundry Gilsonite is added to sand molds and cores, it enhances their strength and durability. It acts as a binder, improving the cohesion and adhesion of the sand particles. This results in stronger molds and cores that can withstand the stresses and pressures encountered during the casting process. The increased strength helps in achieving accurate and precise casting dimensions.


  1. Increased Resistance to Thermal Shock:
    Foundry Gilsonite provides excellent resistance to thermal shock. It helps the mold or core to withstand rapid temperature changes without cracking or breaking. This is particularly important in foundry operations where molten metal is poured into the mold at high temperatures. The enhanced resistance to thermal shock ensures that the mold or core maintains its integrity and shape throughout the casting process.


  1. Reduced Gas and Moisture Penetration:
    Foundry Gilsonite acts as a barrier against the penetration of gases and moisture into the mold or core. It forms a protective layer that seals the surface, preventing the escape of volatile compounds and the absorption of moisture. This helps to minimize the formation of defects such as gas porosity and shrinkage in the castings. The reduced gas and moisture penetration contribute to improved casting quality and reduced scrap rates.


  1. Excellent Flowability:
    Foundry Gilsonite improves the flowability of the molding sand. It reduces the friction between the sand particles, allowing for better mold filling and smoother surface finish on the castings. The improved flowability helps in achieving intricate and complex casting shapes with minimal defects. It also facilitates the easy removal of the pattern from the mold after casting.


  1. Versatile Applications:
    Foundry Gilsonite is primarily used in the production of sand molds and cores for various metal casting processes. It can be used in both green sand and resin sand systems. Foundry Gilsonite is compatible with different types of sand, binders, and additives, making it a versatile choice for foundry operations. It is commonly used in industries such as automotive, aerospace, and general engineering.


  1. Environmentally Friendly:
    Foundry Gilsonite is a natural product derived from the earth, making it an environmentally friendly choice for foundry applications. It is free from harmful chemicals and additives, reducing the environmental impact of the casting process. Additionally, the use of Gilsonite in foundry molds and cores can contribute to improved casting quality, reducing the need for rework and minimizing waste generation.


In summary, Foundry Gilsonite is a valuable additive for foundry molds and cores, offering improved strength, resistance to thermal shock, reduced gas and moisture penetration, excellent flowability, and versatility. Its unique properties enhance the performance of the molds and cores, leading to high-quality castings with minimal defects. By incorporating Foundry Gilsonite, foundries can achieve accurate dimensions, reduce scrap rates, and improve overall casting efficiency.

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