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Fiberglass Filtration Mesh

Fiberglass Filtration Mesh

High Silica Fiberglass Filter Mesh For Steel Iron Copper

High Silica Fiberglass Filter Mesh is weaved by high silica fiberglass yarn and coated with special refractory coating.

Made from specially treated silica yarns, the thick type silica mesh filters are capable of withstanding pouring temperature up to 1620℃. 

It can effectively remove slag, refractory particles and non-metallic inclusions from molten metals.

Silica mesh filter are ideal for in-mold filtration of gray, malleable, white, compacted graphite and ductile cast irons, as well as non-ferrous aluminum and copper-based metal alloys and many types of small scale steel casting filtration.


In casting production, the rejection rate of castings is 50 to 60% due to casting problems such as non-metallic inclusions. The inclusions do not only reduce mechanical properties of the casting, but also has a great influence on processability and appearance. For the purification of liquid casting alloys, reducing or filtering various non-metallic inclusions is an important technical measure to obtain good quality castings, and the use of fiberglass casting filters has become an important auxiliary material for purification of liquid casting alloys.


High Silica Fiberglass Filter Mesh For Steel Iron Copper


1. It can reduce casting impurities by half and the scrap rate.

2. Filter out impurities, reduce the adverse effects of impurities on the structure and properties of casting alloys, and improve the material properties of castings.

3. Improve the machining performance of castings.

4. Improve process yield.

5. Improve the surface quality of the casting, because the impurities are filtered out, the secondary oxidation is reduced, and the surface quality of the casting is improved.

High Silica Fiberglass Fabric Filter Mesh Key Points of Usage

1. Use area of filter net: F1 = F2 / AxB

● F1: the cross-sectional area of the casting system. 

● F2: the original cross-sectional area of the casting system.

● A: the porosity of the filter screen, generally 50-60%. 

● B: the filtration rate of filter screen, generally 60-80%.

Therefore, the cross-sectional area of the casting system is generally 2-4 times that of the casting system without the casting net.

2. Position of filter screen:

● Place the filter under the sprue cup;

● Placed on the parting surface under the sprue;

● Three different positions on the lap surface of the runner.

High Silica Fiberglass Filter Mesh For Steel Iron Copper

TypeHigh Silica Fiberglass filtration mesh for Steel & Iron
Work Temperature≤1620℃
Softening Temperature1700℃
Continuous Working Hours<10 Min.(1400-1450℃)
<4 Min.(1450-1560℃)
<15 Seconds.(1560-1620℃)
Gas Emit≤60cm 3/g
Weight520-580 g/m2
Hole Size1.5*1.5/2.0*2.0/2.5*2.5mm
Weave PatternMock Leno

If you are interested in the Fiberglass Filter For Steel, welcome to contact us.


Filtration of Molten Steel


Copper and Aluminium

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Contact Us

+86 158 3011 4065

+86 158 3011 4065

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