How to strike the intermediate frequency furnace and what to use to strike the furnace charge The intermediate frequency furnace generally uses quartz sand or neutral strike the furnace charge, and the process is different. Generally, there are two strike methods for the intermediate frequency furnace, one is dry strike and the other is wet strike. It is made of adjusted quartz sand, which is added with high temperature agent. The old furnace should be cleaned after being disassembled for pipe opening. The glass fiber cloth should be paved, and the furnace bottom should be filled with materials. The depth of the furnace bottom is usually about two circles of the induction ring. Then, the furnace liner should be put in, filled with materials, and placed correctly. It is better to hit the furnace liner firmly by dry beating. The wet beating is to fill the furnace liner with water, then hit the furnace liner to make the materials firm, and finally pull out the furnace liner at the right time. Neutral furnace charging: 1. Preparation of tire mold: First, clean the tire mold, brush a layer of graphite powder evenly mixed with engine oil or water around it, and then let the tire mold air dry naturally. 2、 Preparation of intermediate frequency furnace: The temperature of the intermediate frequency furnace must be reduced to below 50 before construction can be carried out. The inner wall of the coil adhesive must be cleaned, and residual materials or dust must not be adhered. Water should not be sprayed on the inner wall of the coil adhesive. 3、 Construction 1. Furnace bottom construction (1). Mixing of neutral ramming materials: First clean the mixer, start the mixing motor, add furnace lining materials (the amount should not exceed 2/3 of the mixer container), add 4-5% tap water for mixing, and the mixing time should be 8-10 minutes. Note: Method for determining the amount of addition: Grab the mixed material with your hand, it can form a ball and not become loose. (2) Furnace bottom construction: When evenly pouring furnace lining material into the furnace bottom, add 100mm thick material each time, use a flat plate vibration to compact the bottom material, then roughen the surface, add 100mm thick material, use a flat plate vibration to compact the bottom material, and so on. 2. Furnace wall construction: (1) After the construction of the furnace bottom, seat the tire mold into the medium frequency furnace. When setting the mold, ensure that the gap thickness between the two sides of the tire mold is the same. (2) Then pour the rammed material into the gap of the intermediate frequency furnace. When pouring, evenly pour it along the side wall at different positions, with a height of about 100mm. Use a vibrator to drag it around the tire mold, with the aim of fully exhausting the material and densifying it, while also reducing material segregation during the vibration process of the tire mold. Then roughen the surface, add a height of approximately 100mm, use a vibrator to drag around the tire mold, and so on. Warm reminder from Luoyang Quantong Kiln Industry: During construction, ensure that the material height is higher than the height of the coil adhesive. 3. Maintenance: Above 25, natural maintenance for 24 hours. 4. Demolding: Use a crane to pull out the tire mold, and be careful when pulling out the mold to prevent damage to the working lining edge. 5. Baking: Low temperature baking time: 2-4 hours, temperature<300; Medium temperature baking time: 6-8 hours, temperature 300-800; High temperature baking time: 2-4 hours, temperature 800-1000. Blowing furnace with quartz sand: high-quality quartz sand is selected as the main raw material, and the particles are made with multistage proportioning and dry materials. The drying and sintering cycle is shortened, and users can directly build the furnace without mixing. Its characteristics are slag hanging, crack opening, failure due to moisture, convenient furnace repair, and corrosion resistance, especially to improve furnace life and significantly improve economic benefits. It has the advantages of low cost, multiple heats, and high temperature resistance, and is currently widely used by casting enterprises.