The lining material of medium frequency induction furnace, also known as acidic furnace material or siliceous furnace material, is made by mixing and processing siliceous materials with a silicon content of over 99,9% and several chemical materials. A good furnace material has a lifespan of about 50 heats, and the furnace life is related to the type of steel being melted!
In the initial and future use of medium frequency electric furnaces, lining and sintering are required in the furnace body. Lining is the process of using electric furnace material to create a protective layer along the inner wall of the furnace to isolate the melting material from the induction coil inside the furnace, protecting the induction coil. When laying the furnace lining, attention should be paid to evenly and firmly applying force, completing it in one go and forming it in one go. After the furnace lining is laid, it needs to be baked for a long time at low temperature to solidify into a solid whole with considerable strength, and can withstand molten stirring and feeding impact. During sintering, the method of low power and slow heating in an empty furnace should be followed, and continuous baking should be carried out for more than 36 hours to fully solidify and solidify. The quality of furnace lining knotting is an important prerequisite for ensuring the service life and safety of the medium frequency carburizing furnace.
After the furnace lining is tied, how to operate it correctly and reasonably is the key to extending the service life of the medium frequency electric furnace and ensuring personal safety- In general, before operating a medium frequency electric furnace, it is necessary to check whether the water cooling system is smooth, whether the cooling water pressure and temperature are normal, whether there is any leakage, and whether the hydraulic system can work properly. During operation, it is necessary to be careful not to touch or touch randomly. One person should operate and one person should supervise, and unauthorized personnel are strictly prohibited from entering the computer room to prevent electric shock. During the smelting process, dry molten materials should be used, and the materials should be handled gently and added frequently. When the molten materials in the furnace reach the required melting point, they should be poured out in a timely manner to avoid high temperature increasing the loss of the furnace lining; Observing frequently, when there is redness on the outside of the furnace body, it is a precursor to furnace leakage. Measures such as shutting down the intermediate frequency power supply and pouring out the molten material inside the furnace should be taken in a timely manner to avoid furnace leakage accidents. During use, it should also be noted that when the furnace lining becomes very thin and cannot be used anymore, the old furnace lining should be smashed and replaced with a new one to prevent furnace leakage accidents. Note:; The electric furnace material is acidic, and alkaline materials must not be added to the furnace.
