• FeCrAl Alloy Fiber Sintered Felt is made of Ferro-chromium-aluminium alloy metal fiber, it is widely used in high temperature high precision filtering industry and enviromental metal fiber infrared gas burners.

FeCrAl Alloy Fiber Sintered Felt For Infrared Radiant Gas Burner


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Description: FeCrAl Alloy Fiber Sintered Felt is made of Ferro-chromium-aluminium alloy metal fiber, it is widely used in high temperature high precision filtering industry and enviromental metal fiber infrared gas burners.

FeCrAl Alloy Fiber Sintered Felt

FeCrAl alloy is an important electrothermal alloy. Because there are a lot of Cr and Al in its composition, dense oxide film will be formed on the surface of the alloy at high temperature to prolong the service life of the alloy material. High AL content can also improve the resistivity. High resistivity can effectively convert electrical energy into heat energy and save electrothermal materials. At the same time, the price of FeCralloy metal fiber is about 30% cheaper than that of nickel alloy and stainless steel alloy. Therefore, the excellent high temperature oxidation resistance (up to 1400 C) and high resistivity (up to 1.6) of Fe-Cr-Al alloy materials as well as the cheap price provide conditions for their extensive use. The preparation of micron-sized metal fibers and their products from Fe-Cr-Al alloy materials can be widely used in high temperature gas filtration, burner and gas seal, etc.


The fibers used in the metal fiber burner are heat-resistant alloy steel (usually Fe-Cr-Al alloy) fibers made by mechanical method, with a diameter of about 40-60 um. By sintering or knitting the fibers into special permeable materials with three-dimensional network structure, the fibers can be used in metal fiber burners.

[Burner characteristics]

The surface combustion of metal fibers not only has the characteristics of infrared combustion, but also has the characteristics of low pollution emission, which has attracted wide attention. The head of the metal fiber burner is made of very fine metal fibers. Metal fibers can be sintered together to form rigid and porous sheets, as well as soft fabrics through textile processes. Both structures provide a uniform medium with strong air permeability. It can be burned in both thermal radiation mode and blue flame mode, and can realize combustion translation conversion in two modes.

Metal fiber burner has good corrosion resistance and oxidation resistance. This gives the burner an extra long life. When the burner is in a closed environment, the surface temperature and radiation efficiency will increase. The maximum working temperature of the metal fiber burner for long life is 1100 C.

Metal fiber infrared burner has thermal shock resistance. Because 100% metal is used, the metal fiber burner can even withstand the thermal shock of the limit state. Water sprinkled on the burner surface will evaporate without leaving any damage marks on the burner surface. In addition, the metal fiber burner also has good mechanical impact resistance, anti-fire safety and fast cooling performance.

The flexibility of the metal fiber burner enables the head of the burner to be made into any shape. Such as flat, cylindrical, conical, concave, spherical and so on.

The characteristics of infrared radiation and low pollution emission of metal fiber gas burner make it applied in many industries, including domestic oven, industrial furnace, food industry, textile industry, automobile industry, glass manufacturing industry, iron and steel foundry industry, etc.

Working principle

Metal fiber burner belongs to premixed gas surface combustion. The gas-air mixture with uniform premixing flows to the burner head and combusts on the surface layer of the metal fiber fabric with uniform air permeability. Combustion is carried out in two ways: infrared thermal radiation and blue flame. Infrared thermal radiation means that combustible mixture is burned inside the fabric. Metal fiber fabric is heated to incandescent state, and part of the heat is released by radiation. The blue flame mode is that the combustible mixture burns over the fabric, the flame floats on the surface with blue, and the heat is released by convection.

Because of the uniform permeability of metal fiber fabric and the uniform premixing of gas and air, the combustion is very stable and the temperature distribution is uniform, and there is no local high temperature, so the formation of NOx is inhibited. Premixing has enough air supply, so C0 emission is also low.

Ronda Industrial Technology Limited is professional metal fiber textiles manufacturer with rich experience .

Please contact with us for more details


Fiber Dia (um) Weight(g/m2) Thickness (mm)
50 800 1.2
50 1200 1.5
50 1500 1.7
50 1900 1.7
50 2500 2
3200 2.5
50 3800 3

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