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Foundry electric furnace is a kind of equipment that melts metal or alloy material and then casts it into shape. Its internal temperature is as high as hundreds to thousands of degrees Celsius, so it needs to be lined with high-temperature refractory materials. Common refractory materials for foundry electric furnaces include:
High alumina brick: made of kaolin, alumina, and other raw materials, it has the characteristics of high strength, strong corrosion resistance, high-temperature resistance, etc., and is usually used for the lining of electric furnace walls, furnace roofs, furnace bottoms, and other parts.
Silica bricks: made of silicon raw materials, have the characteristics of high refractoriness, good wear resistance, acid, and alkali corrosion resistance, etc., usually used for the lining of the furnace wall, furnace throat, and other parts of the electric furnace.
Magnesia brick: It is made of raw materials such as light-burned magnesium powder and light-burned magnesia powder. It has the characteristics of high-temperature resistance, good thermal conductivity, and alkali resistance. It is usually used for the lining of the furnace body and throat of the electric furnace.
Carbon brick: made of coke, graphite, and other raw materials, it has the characteristics of high-temperature resistance and good electrical conductivity, and is usually used for the lining of the furnace wall and throat of the electric furnace.
Refractory castable material: It is made of raw materials such as refractory powder and refractory cement. It has the characteristics of good fluidity and slag resistance. It is usually used for the bottom and side walls of electric furnaces and other parts that need to be poured.
The above are common refractory materials for foundry electric furnaces. The specific materials and positions used should be selected according to the specific design and process requirements of the electric furnace. At the same time, it is necessary to pay attention to the maintenance and maintenance of refractory materials during use, so as to avoid material damage affecting the production efficiency and safety of the electric furnace.
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