Since the early 1970s, fiberglass fabrics have found an interesting application in the filtration and uniform distribution of cast aluminum . Oxides are generated when molten aluminum comes into contact with oxygen in the air. Chemical reactions occur at high temperatures, particularly during melting, whether primary, in foundry or recycling. The oxides must be removed before the metal casting, and it is at this stage that the fiberglass fabrics and the articles made with them are used to provide better casting results. The simplest form of application is directly like a piece of cut filtering fabric. Elaborate shapes sewn from glass fabrics, Like combined bags, canal bags, socks for beaks, funnels and washing socks, they are also used. These articles help to reduce turbulence, filter oxides and improve temperature distribution throughout the ingot.

These tissues are treated with chemical resins to stabilize the weft. The molten metal is filtered through this mesh. The number of yarns used determines the strength of the fabric during filtration. This also controls the amount of liquid aluminum flow. Fabrics that do not produce smoke are also available, as they receive heat treatment.

Urja is one of the largest manufacturers of glass fabrics Suitable for cast aluminum filtration and is recognized by more than 250 aluminum companies in more than 15 countries.

fiberglass filtering fabrics They are made in flat plots or in a leno plot. The flat weft is used when fine filtration is required, while the fabrics in Leno are used when a more open mesh is required. The Leno weave fixes the wires to the fabric, providing greater dimensional stability.

Customers can order fabrics in any width up to 1500 mm. Parts cut in different sizes and shapes are also available.

All of these are nominal values

auxiliary products

Wash insulating covers

Open channels allow heat dissipation and undesirable oxidation of aluminum in free flow. Therefore, the most logical solution would be to cover the passage of the channel with insulating covers. It is worth consulting our engineers for a project that meets their specific needs. Bespoke channels insulation systems are our specialty.

Cable protection sleeves

Urja manufactures protective covers specially made with heat resistant fabrics for the protection of cables and hoses. In this way, the cables in critical areas are protected against splashes of molten metal, heat and flames. Cable protective covers can be applied to existing cables with great ease.

aprons and gloves

Personal protective equipment, such as gloves, protective sleeves and aprons, manufactured with aramid (Kevlar®), fiberglass, aluminized glass fiber, silica and ceramic fabrics. These products guarantee heat protection, metal spatter, cuts and occasional flames.

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