HIGH-PERFORMANCE FABRICS FOR ALUMINUM FOUNDRIES AND SMELTERS
Due to aluminum's high viscosity and strong adherence, worker protection requires textiles with excellent splash repellency and reliable thermal insulation.
Risks and safety standards for protective fabrics in aluminum foundries
Due to aluminum’s relatively low melting point (around 1400 °F) and high viscosity, molten aluminum tends to adhere to most textiles, which can result in severe burns. Finding a technical fabric that provides durable and effective resistance to aluminum splashes is therefore a significant challenge.
In aluminum smelters, fabrics must also withstand cryolite splashes. Cryolite is a highly corrosive salt used in the primary aluminum production process, so fabrics that combine protection against molten aluminum and cryolite are essential for worker safety.
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Molten metal splashes are a critical hazard in foundries, where high-temperature processes like smelting, pouring, and casting involve handling liquid metals at extreme temperatures, often exceeding 2,800°F. These splashes can occur unexpectedly during operations such as transferring molten metal, removing, or dealing with furnace malfunctions. This mostly occurs when moisture comes into contact with molten metal. The rapid conversion of water into vapor can create a violent expansion, propelling molten metal in all directions. Even a small splash can cause severe burns, ignite clothing, and pose life-threatening risks to workers.
To address the dangers of molten metal splashes in foundry environments, fabric in protective clothing must be engineered to shed molten metal splashes, preventing adhesion that can extend exposure and increase the severity of burns. Additionally, high thermal insulation is critical to minimize heat transfer to the skin, reducing the risk and extent of injuries.
Welding environments present a constant risk of exposure to sparks, molten metal splatter, slag, and intense radiant heat (UV and IR). These hazards can cause severe burns, ignite ordinary workwear, and damage the skin and eyes even during short welding operations. Sparks and molten droplets can travel several meters and penetrate openings in garments, while radiant heat builds up over time, increasing the risk of thermal injury.
To mitigate these risks, protective clothing for welders must be flame-resistant and designed to repel and withstand fast molten metal splash, minimize heat transfer, and maintain performance after repeated use. Garments should provide full body coverage, particularly at high-exposure areas such as the chest, arms, and legs. The main standards covering protection for welding include:
Arc flash is a plasma explosion that originates when voltage drops in a non-conductive element, such as air. When electric arc occurs, the temperature at any given zone may exceed 20.000 ºF within less than half a second. This, together with small molten metal projectiles and a shockwave.
The value of protection is measured in calories per square centimeter, indicates the energy threshold at which the fabric provides adequate thermal protection to prevent second-degree burns, with a probability of no more than 50% according to the Stoll Curve. The main standards to cover against this hazard are:
HOW WE PROTECT YOU
Protects against a variety of metals, including aluminum and cryolite. It is the lightest fabric to reach D3 protection, helping reduce heat stress.
Protects against larger splashes and a variety of metals, including aluminum and cryolite.