High-Silica Fiberglass Filter Mesh Shipped to Steel Casting Foundry

Nov. 02, 2026

High-Silica Fiberglass Filter Mesh Was Shipped to Steel Casting Foundry today!

A bulk order of high-silica fiberglass filter mesh for molten steel was shipped to our Southeast Asia client today. The customer is a steel investment casting and sand casting foundry producing heavy equipment and engineering components.

Order details:

● Product: High-silica fiberglass filter mesh (refractory ceramic coated)

● Aperture sizes: 1.5 mm, 2.0 mm, 2.5 mm

● Pouring temperature resistance: up to 1750 °C

● Coating: Inorganic refractory ceramic coating (no organic binder burnout)

● Edge: Lock-woven selvedge to prevent fraying under metal stream

● Packaging: Double vacuum-sealed PE film, export cartons on wooden pallets

Why high-silica mesh, not standard fiberglass?

● Standard E-glass fiberglass mesh softens around 800–900 °C and cannot survive molten steel pouring at 1550–1650 °C.

● The high-silica yarn is woven from silica-rich glass yarn (SiO₂ ≥ 96%), then coated with an inorganic refractory ceramic layer that hardens on contact with the metal stream.

● The ceramic coating holds the yarn bundle together, prevents fiber dropout, and keeps the mesh shape through the entire pour.

What it removes?

● The mesh traps slag, refractory sand particles, oxide films and non-metallic inclusions before they enter the casting cavity.

● For steel and ductile iron foundries, this directly reduces inclusion-related reject rates and improves machinability of the finished casting.

Trial casting results:

● The customer tested the mesh on a series of carbon steel investment castings. Inclusion-related rejects dropped from 3.8% to 0.9%, and post-casting grinding and polishing time was reduced.

● No fiber residue was found on the casting surface after shot blasting.