Home > News > The basic knowledge introduction of ceramic foam filter plate

The basic knowledge introduction of ceramic foam filter plate

Apr. 17, 2023

Basic Information:

Ceramic filter plate, also known as foam ceramic filter plate, is composed of alumina ceramic filter plate, silicon carbide ceramic filter plate and zirconia ceramic filter plate.

The Features of Ceramic Foam Filter:

It can effectively remove large inclusions in metal liquid, and absorb fine inclusions with micrometer size, which can improve the surface quality, improve the product performance, improve the microstructure and improve the yield of finished products. It is widely used in aluminum profile, aluminum foil, aluminum alloy, Iron, Steel, alloy and other production fields.

The basic knowledge introduction of ceramic foam filter plate

The Manufacturing Operation:

The organic foam foam with three-dimensional network structure and connected pores was used as the carrier, which was infiltrated into the thixotropic special ceramic paste, and the special roll extrusion process was adopted to make the ceramic paste evenly applied on the carrier skeleton, and then the ceramic paste was dried and cured and then roasted at high temperature.

The basic knowledge introduction of ceramic foam filter plate

The Chemical & Physical Parameters:

Ceramic Foam Filter		Material
Items	Unit	Alumina	Silicon Carbide	Zirconia
Color	Color	White	Grey Black	Yellow
Composition	Al2O3	≥85	≤30	≤30
	SiO2	≤1	≤10	≤4
	Others	--	SiC ≥60	ZrO2 ≥66
Channels Density	ppi	10~60	10-60	10-60
Porosity	%	80~90	80~90	80~90
Bending Strength	Mpa	＞0.6	＞0.8	＞1.0
Compression Strength	Mpa	＞0.8	＞0.9	＞1.2
Volume-Weight	g/cm3	0.3-0.45	0.35-0.5	0.9-1.5
Max Operation Temperature	°C	≤1100	≤1500	≤1700
Thermal shock resistance	Times/1100°C	6	6	6
Application		Filtration of molten aluminium.Non-ferrous alloys.	Filtration of molten steel and alloy, large scale iron casting.	Filtration of molten steel and steel alloys.
Manufacturer		Hebei CangChen Imp. & Exp. Trade Co., Ltd.
Certificate		ISO9001:2015

The Method of Usage:

1. Clean filter box

2. Gently put the filter plate into the filter box, and press the sealing gasket around the filter plate by hand to prevent the flow of molten aluminum.

3. Evenly preheat the filter box and filter plate to make it close to the temperature of the molten aluminum. Preheat to remove moisture and facilitate initial instant filtration. Preheating can be carried out using electric or gas heating. Under normal circumstances, it takes about 15--30 minutes.

4. Pay attention to the change of the aluminum hydraulic head during casting. The normal initial pressure head is 100-150mm. When the molten aluminum begins to pass, the pressure head will drop below 75--100mm, and then the pressure head will gradually increase.

5. During the normal filtration process, avoid knocking and vibrating the filter plate. At the same time, the launder should be filled with molten aluminum to avoid too much disturbance of the aluminum liquid.

6. After filtration, take out the filter plate in time and clean the filter box.

"Hebei Cangchen" Brand

Cangchen, a professional foundry filtration products manufacturer with ISO Certificate who focuses on the production, sales, service and solutions. We are the recognized leader in the development and production of casting filters at home and abroad, and possesses the excellent innovation capabilities in filter manufacturing technology.

Since founded in 2002, with excellent quality and continuous design innovation, we have successfully opened the international market, cooperate with a large number of clients all over the world.

Main products include all kinds of high quality of all kinds of ceramic foam filters including SIC, Alumina, Zirconia and Honeycomb extruded ceramic filter.

Weclome you to inquiry any of our foundry filtration products!