Ceramic Foam Filter

Ceramic Foam Filter

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CERAMIC FOAM FILTER
Ceramic  foam filter is a kind of effective molten metal filter. It’s three-dimensional connected mesh structure and high porosity has many advantages,for example, large surface area of slags collection,large inner surface area of filtering,small flow resistance,good filtering effect,etc.

Functions of ceramic foam filter
● Decontaminate the melting metal liquid
● Simplified gating system
● Improve the metallurgical structure of the castings
● Reduce imparities of the castings
● Improve casting quality rate
● Reduce casting internal re-oxidation defects
● Reduce the surface defects after machining of the castings

Classification
1.Alumina Foam Filter
2.Silicon Carbide Ceramic Foam Filter
3.Zirconia Ceramic Foam Filter
4.Magnesia Ceramic Foam Filter.
Guide of Choosing Ceramic Foam Filter

It’s very important to choose and design filter model & filter seat correctly according to casting types and pouring weight. The general principle is that the whole gating system should be a system without pressure to ensure that the molten metal liquid filling mould smoothly. Ratio of the sectional area will be the main point.
F sprue:F filter front-end:F filter back-end:F runner:F ingate = 1:4:1.75:1.1:1.2
Storage condition:
Store in a dry and well-ventilated place,keep out of rain and heavy weights.

Specifications for Alumina Casting

Specification for Steel/Magnesium casting

Dimensi
ons (mm)

Zirconia Foam Filter

Dimensions

(mm)

Magnesia Foam Filter

Pouring Rate(kg)

Filtration Capacity(kg)

Pouring Rate(kg)

Filtration Capacity(kg)

50×50×22

3~5

30

Ф50×22

4.0

60

50×75×22

4~6

40

Ф60×22

7.0

80

75×75×22

7~12

60

Ф90×22

10.0

120

75×100×22

8~15

80

Ф120×22

16.0

160

100×100×22

14~20

100

100×100×22

13.0

140

Ф50×22

2~6

18

150×150×25

22.0

260

Ф80×22

6~10

50

230×230×30

130.0

3100

Ф90×22

8~16

70

300×300×40

260.0

5200

Physical and chemical properties

Material

Alumina

Silicon Carbide

Zirconia

Magnesia

Color

White

Grey black

Yellow

Dark yellow

Pore Density

8-60ppi

8-60ppi

8-60ppi

8-60ppi

Porosity

80-90%

80-90%

80-90%

80-90%

Refractoriness

≤1100℃

≤1500℃

≤1700℃

≤1000℃

Bending Strength

>0.6Mpa

>0.8Mpa

>1.0Mpa

>0.6Mpa

Compression Strength

>0.8Mpa

>0.9Mpa

>1.2Mpa

>0.8Mpa

Volume-weight

0.3-0.45g/cm3

0.35-0.5 g/cm3

0.9-1.5 g/cm3

0.35-0.5 g/cm3

Thermal shock resistance

6times/1100℃

6times/1100℃

6times/1100℃

6times/1100℃

Application

Aluminium 、

Aluminium alloys and other

Non-ferrous alloys

Ductile Cast Iron、

Malleable Cast

Iron、Gray ironand other Cast Iron

High melting point metal alloys likeSteel、AlloySteel、Stainless Steel etc

Magnesium and High-Active A

Usage of Ceramic Foam Filter

Storagecondition:
Store in a dry and well-ventilated place,keep out of rain and heavy weights.