• silicon carbide ceramic foam filter for iron castings
  • silicon carbide ceramic foam filter for iron castings
  • silicon carbide ceramic foam filter
  • silicon carbide ceramic foam filter for iron castings
  • silicon carbide ceramic foam filter for iron castings
  • silicon carbide ceramic foam filter

Silicon Carbide Ceramic Foam Filter

Silicon carbide foam ceramic filters are used in the purification process for the production of malleable iron, ductile iron, and gray iron to remove inclusions and gases in molten iron. It generates smooth laminar flow in molten iron.

  • Good porosity, no clogging when pouring molten metal.
  • Mature production technology ensures good fire resistance and thermal shock resistance.
  • Advanced cutting instruments precisely control size.
  • Sufficient slurry, no breakage, and no filter residue.

Silicon Carbide Ceramic Foam Filter Characteristics

SEFU silicon carbide ceramic foam filter is an inorganic non-metallic filter material. It is a porous ceramic that looks like foam with many pores in its internal structure.

This porous ceramic is currently the most promising high temperature material. It has the advantages of lightweight, high strength, high temperature resistance, corrosion resistance, good filtration, and adsorption.

It has superior thermal conductivity, good mechanical strength and chemical stability. It also has a unique moisturizing molten iron composition, which helps to reduce the friction between the filter and the molten iron to ensure smooth filtration.

silicon carbide foam filters
Chemical  Composition SIC/ Al2O3/SIO2
Porosity(%) 80~90%
Colour Grey
Application Temperature Max.1500°C
Compression Strength(Mpa) ≥1.0
Thermal Shock Resistance 1100°C—room temperature 6 times
Bulk Density 0.4-0.5g/cm3
Tolerance of Dimensions -1.5-0.5mm
Size
(mm)
10ppi 20ppi 30ppi
Capacity
(kg)
Flow Rate
(Kg/s)
Capacity
(kg)
Flow Rate
(kg/s)
Capacity
(kg)
Flow Rate
(kg/s)
Grey Iron Ductile Iron Grey Iron Ductile Iron Grey
Iron
Grey
Iron
Grey Iron Grey Iron
40×40×15 64 32 4 3 50 3 42 2
40×40×22 64 32 4 3 50 3 42 2
50×30×22 60 30 4 3 47 3 40 2
50×50×15 100 50 6 4 78 3.5 66 3
50×50×22 100 50 6 4 78 3.5 66 3
60×60×15 144 72 9 6 112 6 95 5
75×50×22 150 75 9 6 116 6 99 5
75×75×22 220 110 14 9 175 10 149 8
100×50×22 200 100 12 8 155 9 133 7
100×75×22 300 150 18 12 232 13 199 11
100×100×22 400 200 24 16 310 18 265 15
150×150×22 900 450 54 36 698 40 596 33
200×200×40 1600 800 95 64 1240 58 1060 48
Dia 40×22 40 20 3 2 39 2 33 2
Dia 50×22 70 35 4.5 3 61 4 52 3
Dia 60×22 100 50 6.5 4.2 88 5 75 4
Dia 70×22 150 75 8.8 5.5 119 7 102 6
Dia 75×22 170 88 10 6 137 8 117 6.5
Dia 80×22 200 100 11 7.2 156 9 133 7
Dia 90×22 240 120 14 9 197 11 169 9
Dia 100×22 280 140 17 11 243 14 208 12
Dia 125×22 400 220 24 16 380 22 325 18
Dia 150×22 700 350 38 25 548 32 468 26
Dia 200×40 1240 620 67 44 973 56 832 46

SEFU SiC Ceramic Foam Filter Application

SEFU silicon carbide ceramic foam filter has broad application prospects in metallurgy, the chemical industry, environmental protection, energy, biology, and other fields.

Molten metal filtration technology is widely used in the field of iron castings, especially in the fields of automobiles and hydraulic parts. Silicon carbide ceramic filters play an important role in improving the quality of automotive castings.

silicon carbide ceramic foam filter for foundry
Application Cases in Large Wind Power Castings

Application Cases in Large Wind Power Castings

For ductile iron wind turbine hub, the pouring temperature is 1360℃. The pouring weight is 9.8 t and the pouring time is 170s. Double sprue.

Silicon carbide ceramic foam filter specifications: 150mm×150mm×40mm, 10ppi.

Result Analysis:

  • The casting is filled smoothly, and the inclusion defects are significantly reduced.
  • The single-piece filter can withstand 800kg molten iron flow, and the material cost of the filter per ton of casting is low.
  • The number of filter sections is reduced, and the casting process yield is 85%.

Why Choose SEFU?

SEFU offer a wide range of casting materials for the foundry and metallurgical industries to help them improve the quality and yield of steel, iron, and other alloys.

Our product range is varied. We have several types of molten metal filtration materials and other casting aids as follows.

  • Silicon Carbide Ceramic Foam filter
  • Alumina Ceramic Foam Filter
  • Zirconia Ceramic Foam Filter
  • Honeycomb Ceramic Filter
  • Fiberglass Mesh Filter
  • Bonded Particle Filters
  • Exothermic Riser Sleeves
sic ceramic foam filter application

Related Products

SEFU team supplies you with more molten metal filtration products and other foundry materials to help you improve casting quality and save production costs.

FAQ Guide About Silicon Carbide Ceramic Foam Filters

Do you have more information about Silicon Carbide Ceramic Foam Filters? This FAQ section can help you learn more.

If you want to know anything else about ceramic foam filters, please contact us to leave your questions, professional foundry solutions are waiting for you.

What are Silicon Carbide Ceramic Foam Filters?

Silicon carbide foam filter is an effective molten metal filter. It has an open and interconnected three-dimensional network structure. It can effectively filter out the molten slag in the molten metal, and make the molten metal fill the cavity evenly and without turbulence.

What are silicon carbide ceramic foam filters used for?

Silicon carbide ceramic foam filters can be used for the filtration and purification of copper castings and aluminum castings. It can also be used for filtration and purification before casting ingots in non-ferrous smelting and copper and aluminum industries.

Why Use Silicon Carbide Ceramic Foam Filters?

The slag formed by the pretreatment of molten iron cannot be completely removed during the slag-making process. The slag washed out by the gating system also easy to enter the casting. The turbulent flow caused by the uneven filling of molten iron will also form secondary oxide slag. Therefore, it is necessary to use a silicon carbide ceramic foam filter to remove the slag.

How do ceramic foam filters work?

Ceramic foam filters effectively retain coarse slag on the filter block surface. After entering the filter block, fine impurities are adsorbed and captured due to the curved inner channel and large specific surface area, which effectively purifies the molten metal.

How to choose ceramic foam filters?

It is very important to select and design the correct filter model according to the type of casting and the weight of the pouring. If you have any questions about the material, shape, pore size, and thickness of the ceramic foam filter, our casting experts can provide you with solutions.

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