Conocimientos sobre placas filtrantes cerámicas

2 de abril Conocimientos sobre placas filtrantes cerámicas

Posted at 09:28h in Filtro de espuma cerámica, Noticias by AdTech 0 Comments

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Conocimientos sobre placas filtrantes cerámicas

The ceramic filter plate(for aluminium) is divided into Ceramic filter plate filter-PZr and filtro de espuma cerámica-PAL. Models, are also known as ceramic filters, ceramic plates, ceramic plates, filter plates, filtro de cerámica de alúminas, and so on.

Ceramic filter plates technology uses

The ceramic filter plate uses a three-dimensional mesh structure and is connected to the pores of the organic foam as a carrier, it invades the thixotropic alumina slurry, with the use of four square correction center distance automatic extrusion technology, The slurry was evenly applied to the carrier’s foam body skeleton and baked and cured at a high temperature of 1180°C.

Installed in the filter box for aluminum alloy liquid impurity filtration, to meet the production of high value-added, high-tech performance aviation, transportation, and other aluminum alloy precision casting. Such as computer hard drives, printing PS base, can-making materials, jet turbine engine fan blades, and other products.

The basic structure of a ceramic filter plate: A ceramic filter plate consists of a plate base, positioning seat, outlet, and surface film.

A ceramic filter plate(for aluminium & aluminium alloy) is one of the core components of the ceramic filter. It is a new type of porous functional ceramic material, and its interior is covered with crisscrossing capillary pores (about 1 to 10 microns in diameter). This is the channel of the filtrate. This component is called the plate base layer. 2. The components of the ceramic filter plate are silicon carbide, corundum, and other materials. The main components of the outlet and positioning base of the ceramic filter plate are composed of stainless steel or polymer material.

The main features of the ceramic filter plates are as follows

1. La precisión de filtración abarca la filtración fina, la microfiltración, la ultrafiltración, la nanofiltración y la ósmosis inversa, con buenos resultados;
2. Alta resistencia mecánica, propiedades químicas estables, buena resistencia al desgaste, baja resistencia, antiblocaje, fácil retroceso, fácil de limpiar;
3, high efficiency, high yield, a beautiful arrangement of filter aperture, uniform and neat;

Ceramic filter plate advantages

1. Aprovechando el principio de adsorción, es capaz de eliminar eficazmente las inclusiones de gran tamaño presentes en el aluminio fundido y de adsorber eficazmente las inclusiones finas de pequeño tamaño;
2. No arrojar escoria, lo que reduce de forma efectiva la contaminación del aluminio fundido;
3. Buena resistencia al choque térmico y mayor resistencia a la corrosión por metal fundido;
4. Producción en cadena de montaje automatizada, tres procedimientos de calibración, dimensiones precisas y mayor compatibilidad con la caja del filtro;
5. Mejorar la calidad de la superficie, el rendimiento del producto y la microestructura.

It can effectively remove large inclusions in the aluminum liquid and adsorb fine particles with micron size, which can improve surface quality, improve product performance, improve microstructure, and increase yield. Widely used in aluminum, aluminum foil, aluminum alloy, and other production areas.

Ceramic filter plate instructions for use

Inspect and clean the caja de filtro surface debris to keep the filter box clean and undamaged.
Coloca con cuidado la placa filtrante en la caja del filtro y presiona manualmente la junta de estanqueidad alrededor de la placa filtrante para evitar que el aluminio líquido se derrame o flote.
Preheat the filter box and filter plate evenly so that it is close to the temperature of the aluminum liquid. The preheating temperature of the filter plate is not lower than 260°C. Preheating to remove adsorbed water helps to facilitate the opening of the initial filter pore size at the moment and prevents the heat from rising and shrinking to block some holes in the filter plate. Preheating can be electric or gas heating, with normal heating for 15-30 minutes.
Durante la fundición, hay que vigilar la variación de la altura hidráulica del aluminio y mantener los parámetros normales de control del caudal del aluminio fundido.
La altura manométrica inicial normal es de 100-150 mm. Cuando el líquido empieza a pasar, la altura manométrica desciende por debajo de 75-100 mm y, a continuación, vuelve a aumentar lentamente.

During the normal filtration process, avoid knocking and vibrating the filter plate. At the same time, the flow tank should be filled with aluminum water to avoid the perturbation of the aluminum liquid being too large or too small.
Una vez finalizada la filtración, retira la placa filtrante a la mayor brevedad posible y limpia la caja del filtro.

Resistencia a la compresión

Durante el transporte y el uso de la placa filtrante cerámica, esta debe soportar un cierto impacto de presión procedente del exterior, por lo que este índice también se incluye en la norma como indicador de la calidad de la placa filtrante. Cuanto mayor sea la resistencia a la compresión, más duradero será el producto y mejor será su calidad, y viceversa.
La norma establece que la resistencia a la compresión debe ser igual o superior a 0,5 MPa.

Resistencia al choque térmico

La resistencia al choque térmico se refiere a la capacidad de las placas filtrantes cerámicas para resistir los daños causados por cambios bruscos de temperatura.
In the use of ceramic filter plates, we require users to gradually filter the filter plate to the temperature of the filtered aluminum melt before use but begin to filter because some users do not observe this well. According to a provision, after the filter plate is set well, the melt is filtered without preheating, and thus the filter plate is required to have a certain resistance to thermal shock.

Cuanto mayor sea la resistencia al choque térmico, más duradera será la placa filtrante y mejor será su calidad.
The determination of the thermal shock resistance of the filter plate is based on the Industrial Standard of the People’s Republic of China “Test Method for Thermal Shock Resistance of Refractory Products” (YB4018-91) and the ferrous metallurgical industry standard of the People’s Republic of China “Testing the thermal shock resistance of refractory products. The method (air quenching method) (YB/T376.2-1995) was based on the characteristics of ceramic filter plates. The basic process of this test method is to preheat the furnace to 740±10°C (the filtration temperature of aluminum and aluminum alloy melt is generally 720±10°C) and keep it warm for 15 minutes. Then, the sample to be tested is quickly moved into the furnace. And keep it for 30 minutes. Then open the furnace door, quickly remove the sample from the furnace, and let it be exposed to the air to cool naturally, this process is repeated six times, observe whether the sample appearances defects such as fracture, damage, and missing corners, if the sample appears these defects Any one of them shows that the product’s thermal shock resistance is not good, and vice versa.