Ceramic Filters Company from Adtech China
Ceramic Filters Company ADTECH keeps focusing on the manufacture of the metallurgical material.
ADTECH is one pioneer following by the International Enterprise, who keeps focusing on the manufacture of the metallurgical material.
1.Ceramic Foam Filter
4.Hot-top casting series
5.Roll casting nozzle
7.Other Metallurgical Material
During the melting and casting of aluminum, bubbles, oxide films, and non-metallic inclusions disrupt the continuity of the metal structure, causing stress concentration, lowering the performance of the casting, and reducing the processing performance. In order to avoid these hazards, the aluminum melt must be purified in two main ways:
1. Adsorption purification
Chlorine, nitrogen or other inert gases are introduced to the aluminum liquid filter tank. These gases and the aluminum liquid generate a bubble chlorine salt, which causes the impurities to float or sink to achieve the purpose of removing the gases and impurities in the aluminum liquid.
2. Filtration purification
The aluminum liquid is allowed to flow into the aluminum liquid filter tank, and the aluminum foam is purified by capturing the inclusions through the ceramic foam filter plate.
Ivans aluminum liquid filter box is aluminum industry special aluminum silicate filter box, usually we call foam ceramic filter box, filter box made of steel shell and aluminum silicate liner.
During filtration, the aluminum melt rakes the rent of the foam ceramic filter plate and flows along the zigzag channels and voids in the filter plate. Impurities in the aluminum melt contact with the surface of the filter plate channel under the action of deposition, inertia, and interception. Pressure, friction, surface adsorption and other effects, impurities are firmly left in the filter plate.
Foam ceramic filter plates are installed and used. Ceramic Filters Company Adtech notes that, the following aspects need to be noted:
1. Use the filter plate correctly:
The size of the filter plate and the number of holes must be selected in consideration of the flow rate range of the specific casting type, the maximum liquid level of the metal during filtration, the total filtration amount, and the cleanliness of the original aluminum liquid.
2. Pre-melt filtration treatment can not be ignored:
Such as molten aluminum furnace and holding furnace normal slag, cleaning furnace; furnace refining. In particular, an in-line degassing device is still necessary because it not only reduces the hydrogen content of the melt, but also removes some of the non-metallic inclusions.
3. The filter plate must be compatible with the square refractory block:
The two are adapted to seal, so as to prevent the metal from flowing into the casting box from the gap without being filtered, and also avoid the failure of the foam filter plate to float in the aluminum water due to the excessive light weight.
4. Preheat before use:
Preheat to remove moisture and facilitate initial transient filtration. Preheating can be carried out using electrical or gas heating. Under normal circumstances, it takes about 15 minutes.
5. During normal filtration, no slag is required to avoid knocking and vibrating the filter plate. At the same time, the launder should be filled with aluminum water to avoid too much worries of aluminum water.
6. After casting, drain the metal in the flow cell and filter plate. There is a vibrator abroad that is placed on the filter plate and shaken for one minute to shake off about 75% of the remaining liquid metal from the filter plate.
7. Finally clean the perimeter and remove the filter plate after solidification.