{"id":5446,"date":"2019-07-29T01:47:15","date_gmt":"2019-07-29T01:47:15","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=5446"},"modified":"2019-07-29T01:47:15","modified_gmt":"2019-07-29T01:47:15","slug":"zro2-ceramic-foam-filter","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/es\/zro2-ceramic-foam-filter\/","title":{"rendered":"Filtro de espuma cer\u00e1mica Zro2"},"content":{"rendered":"

Filtro de espuma cer\u00e1mica Zro2<\/strong><\/p>\n

Zro2 Ceramic Foam Filter is made of zirconia ZrO2. Its heat-resistant temperature is higher than about 1760 \u00b0 C, with very high strength and excellent high temperature impact.
\nAluminium Casting requires aspects of high strength and elongation requirements. Therefore Aluminium is very sensitive to defects caused by impurities.
\nZro2 Ceramic Foam Filter excellent properties can effectively remove impurities that ultimately lead to product quality defects. The impurities are mainly composed of non-metallic particles, slag, and refractory fragments, which improve the surface quality and mechanical properties of castings and reduce the scrap rate.<\/p>\n

Foam Filter can make the aluminum liquid more evenly fill the cavity, and the molten metal has a higher turbulence tendency during casting. The turbulent flow through the three-dimensional pore structure of the ceramic foam filter is finally converted into a very stable laminar flow.
\nEl flujo laminar llena mejor la cavidad, lo que reduce la corrosi\u00f3n por impacto de la soluci\u00f3n met\u00e1lica en la cavidad de la pieza fundida y disminuye considerablemente la tasa de rechazos.<\/p>\n

Non-metallic inclusions in castings are the most important cause of casting defects, which affect the surface finish, mechanical and processing properties of the casting and result in increased reject rates.
\nFiltro de espuma cer\u00e1mica de Al\u2082O\u2083<\/a> product is designed to remove the inclusions and reduce turbulence to achieve a fast and stable flow rate of molten metal, thus improving the quality of the casting.
\nIt has a remarkable filtration effect on all aluminum and aluminum alloys. It is made of pure zirconia and has a temperature of up to 1760 \u00b0C, which is not sensitive to different casting temperature changes.<\/p>\n

\"Filtro<\/p>\n

Excellent raw materials and advanced production technology ensure that Foam Filter has stable dimensional tolerances, meets the requirements of manual molding and more efficient mechanized production lines, and ensures that the quality of foundry products meets international quality standards.
\nFiltro cer\u00e1mico de espuma de al\u00famina<\/a> for temperature 1250 \u00b0 C, suitable for filtration and purification of aluminum and alloy solutions.
\nIn order to meet the ever-increasing quality of aluminum castings, the use of ceramic foam filters is becoming more and more important.
\nFoam Filter is also widely used in ordinary sand casting such as tidal casting and casting of permanent molds such as automotive aluminum parts casting.<\/p>\n

The Transmittance of Zro2 Ceramic Foam Filter<\/strong>
\nLa transmitancia se refiere al \u00e1rea efectiva de filtraci\u00f3n del placa filtrante de cer\u00e1mica celular<\/a> producto. Cuanto mayor sea la transmitancia de la luz, menos orificios ciegos habr\u00e1 y, cuanto m\u00e1s eficaces sean los orificios filtrantes (agujeros), mejor ser\u00e1 el efecto de filtrado.
\nLa placa filtrante de cer\u00e1mica celular que se va a inspeccionar se coloca sobre una caja de luz con una bombilla incandescente de 200 W incorporada, y se utiliza la placa cuadrada de pl\u00e1stico transparente con una cuadr\u00edcula uniforme de 5,0 \u00d7 5,0 mm para medir el \u00e1rea de la superficie principal de la placa filtrante, con el fin de calcular el resultado de la prueba. La transmitancia de la luz de la placa filtrante se utiliza para determinar la transmitancia de la luz de la placa filtrante. En esta norma, se especifica que la transmitancia (proporci\u00f3n de orificios) de la placa filtrante debe ser de 95% o superior.<\/p>\n

How to use Zro2 Ceramic Foam Filter<\/strong>
\n1. Limpia la caja del filtro.
\n2. Coloca con cuidado la placa filtrante en la caja del filtro y presiona con la mano la junta de estanqueidad que rodea la placa filtrante para evitar que se derrame el aluminio fundido.
\n3. Precalentar uniformemente la caja del filtro y la placa filtrante para que alcancen una temperatura cercana a la del aluminio fundido. El precalentamiento sirve para eliminar la humedad y facilitar la filtraci\u00f3n transitoria inicial. El precalentamiento puede realizarse mediante calefacci\u00f3n el\u00e9ctrica o de gas. En circunstancias normales, dura entre 15 y 30 minutos aproximadamente.
\n4. Presta atenci\u00f3n a la variaci\u00f3n de la altura hidr\u00e1ulica del aluminio durante la fundici\u00f3n. La altura inicial normal es de 100-150 mm. Cuando el aluminio fundido comience a fluir, la altura hidr\u00e1ulica descender\u00e1 por debajo de los 75-100 mm y, a continuaci\u00f3n, volver\u00e1 a aumentar lentamente.
\n5. Durante el proceso normal de filtraci\u00f3n, evite golpear o hacer vibrar la placa filtrante. Al mismo tiempo, la canaleta debe estar llena de agua de aluminio para evitar que esta se agite en exceso.
\n6. Una vez finalizada la filtraci\u00f3n, retira la placa filtrante a la mayor brevedad posible y limpia la caja del filtro.<\/p>\n

The Compressive Strength of Zro2 Ceramic Foam Filter<\/strong>
\nIn the process of transportation and use of the filter plate, the filter plate must withstand the impact of a certain pressure from the outside, so the index of compressive strength is also introduced in the standard as one of the basis for measuring the quality of the filter plate. The higher the compressive strength, the more durable the product, the better the quality, and vice versa.
\nEn esta norma, se establece que el \u00edndice de resistencia a la compresi\u00f3n debe ser igual o superior a 0,5 MPa.<\/p>\n