Fiberglass Mesh Filter for Molten Iron Filtration FM‑07‑FE

FM‑07‑FE high‑silica fiberglass mesh filter is purpose‑built for molten iron filtration. Manufactured from high‑silica glass fiber with special refractory coating, it delivers reliable high‑temperature performance up to 1450 °C. It traps oxides, slag particles and non‑metallic inclusions within the gating system, delivers smoother casting surfaces and improved internal soundness, and helps iron foundries lower scrap rates.

FM‑07‑FE high‑silica fiberglass mesh filter for molten iron casting
High‑silica fiberglass mesh raw sheet in FoundryMax production workshop

This filter grade fits gray iron, ductile iron, compacted graphite iron and other conventional iron‑casting scenarios. It delivers excellent cost‑performance for medium‑and‑large‑volume iron foundry production.

Key Benefits of FM‑07‑FE Molten Iron Filter Mesh

  • High‑Temperature Performance: Rated for pouring temperatures up to 1450 °C, suitable for most conventional gray & ductile iron pouring processes.
  • Stable Mechanical Performance: Maintains structural integrity for short‑time pouring cycles, with minimal shrinkage under normal foundry pouring conditions.
  • Effective Slag Capture: Retains slag, sand debris and non‑metallic impurities before molten iron enters the casting cavity.
  • Easy Processing: Can be cut to custom shapes including discs, rectangles and strips for different gating layouts.
  • Good Chemical Compatibility: Chemically inert to molten iron, avoids introducing harmful contaminant elements.

Note: The softening point of high‑silica fiber reaches ~1700 °C, this is a raw‑material property. Effective continuous contact time in molten iron is limited to approx.10 minutes. Long‑term immersion will cause fiber embrittlement.

Industrial High-Temperature Fiberglass Filter Mesh - Improve Casting Quality, Reduce Scrap Rate

Application scenarios include automotive parts casting, pipe castings, mechanical components, wind power castings, automotive engine cylinder blocks, and other conventional casting production.

Technical Data Sheet: Molten Iron Filtration Fiberglass Filter

This datasheet outlines the key specifications of high-silica fiberglass filters designed specifically for the filtration of molten iron (including ductile iron and gray iron) in foundry gating systems.

Parameter Category Specification Details / Note
Product Identification Primary Application Filtration of Molten Iron (Ductile Iron, Gray Iron)
Filter Type Woven High-Silica Fiberglass Mesh
Thermal Properties Continuous Working Temperature 1400°C – 1450°C
Softening Point ~1700°C
Effective Contact Time Approx. 10 minutes in molten iron. Optimal filtration is achieved within the initial moments of pouring.
Filtration Performance Primary Function Removes non-metallic inclusions (slag, oxides, refractories), promotes laminar flow, reduces turbulence.
Standard Mesh Sizes (Hole x Hole) 1.5 x 1.5 mm, 2.0 x 2.0 mm, 2.5 x 2.5 mm
Product Form & Handling Standard Sheet Dimensions Customizable. Common sizes: 300mm x 300mm, 400mm x 400mm
Handling Can be easily cut with scissors or a knife to fit any gating system.
Compatible Casting Materials

Gray Iron
Ductile Iron
Vermicular Graphite Iron
High-Strength Cast Iron
Wear-Resistant Cast Iron
Special Alloy Cast Iron

Compatible Casting Processes

Sand Casting
Lost Foam Casting
Shell Mold Casting
Permanent Mold Casting
Centrifugal Casting
Continuous Casting

Foundry Filter Mesh for Metal Filtration

Foundry enterprises commonly face high scrap rates due to slag inclusion defects in castings. Traditional ceramic filters, while somewhat effective, are fragile, and increase production costs. Our FM-07 Series Fiberglass Molten Iron Filter Mesh utilizes patented high-silica glass fiber technology, effectively intercepts oxide inclusions, sand particles, and slag in molten iron. The special fiber weaving process maintains structural stability at temperatures up to 1450°C without melting or deformation.

Compared to ceramic filters, fiberglass filter mesh is lighter, easier to install, and due to its flexibility. The product has passed ISO 9001 quality certification, exported to over 50 countries including Turkey, USA, and India, serving more than 800 foundry manufacturers.

Our Core Value Proposition

As a professional fiberglass filter mesh manufacturer and exporter, we provide global foundry enterprises not just filtration products, but a complete casting quality improvement solution. By adopting our FM-07 Series high-temperature fiberglass filter mesh, foundry enterprises can:

In quality – it reduces casting scrap rates, surface defects, and internal porosity, achieving a significant leap in casting quality and meeting the stringent requirements of high-end markets such as automotive, energy, and precision machinery.

In cost – the overall operating cost is lower than traditional ceramic filters, significantly improving enterprise profitability and market competitiveness.

In service – it provides comprehensive services from filtration solution design and product customization to after-sales support. A professional technical team is available 24/7 to respond to customer needs, helping customers solve various casting challenges and becoming a trusted long-term partner.

We promise: higher filtration efficiency, longer service life, lower overall costs, and superior technical services to help casting enterprises achieve high-quality development.

High‑silica fiberglass mesh raw sheet in FoundryMax production workshop

Tell us your pouring temperature, alloy type, runner dimensions and required mesh opening. We offer custom cutting and bulk‑order support for foundry customers.

More Foundry Filters

FoundryMax offers multiple foundry filters to address specific metal filtration requirements across various casting operations.

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Whether you're looking to improve casting quality, increase yield, or simply streamline your supply chain, our team is ready to help. Contact us today for a quote or technical consultation.

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