Medium frequency electric furnace furnace process

The various processes of the intermediate frequency electric furnace application process are also very important for the service life of the furnace, and improper operation may reduce the service life of the furnace. Therefore, the following points should be noted in the application process.

1) Because the sintered layer of the new furnace is thin, the application process of the new furnace is very important. The first furnace of the new furnace water discharge should be 50%, that is, the feed is melted, so as to prevent the lining from being quenched and causing cracks and the like after all the water is discharged; the new furnace is continuously smelted as much as possible to prevent the intermittent melting and the formation of cold and hot. The cracks should generally be melted for 1 week in succession; when the new furnace is used, it is best to prevent the furnace bottom and the furnace wall from being severely impacted during the cutting, and to prevent the lining from peeling off and cracking under the severe impact. Therefore, in order to obtain the age of the furnace, the furnace technology in the early stage of the furnace should be completed.

2) Try to prevent high temperature melting during the smelting process. In the high temperature state, the lining will react with the molten iron, as follows: SiO2 + 2C → Si + 2CO, the higher the temperature, the higher the C, the lower the Si, the erosion of the lining will be intensified, especially in the new furnace. It is obvious, so the temperature is kept as high as possible at the temperature of the water at the time of melting. The outlet temperature is 1 490 °C~1 540 °C, but it is generally controlled at 1 490 °C~1 520 °C during the smelting process. It is worth mentioning that in the effluent After the power is cut off, the heat is kept at a lower temperature. When the water is ready to be discharged, the temperature is raised according to the temperature of the previous water. This can reduce the erosion of the high temperature molten iron on the furnace lining, prolong the service life of the lining, and reduce the power consumption, which is to increase the furnace age and decrease. A good way to consume electricity.

3) Prevent the lining from overheating. Because the temperature rise of the intermediate frequency furnace is quite fast, when the smelter does not pay attention, the furnace material is “bridged” and the lining exhibits partial high temperature and even exceeds the refractoriness of the lining. This may cause the lining to melt and erode; perhaps before the furnace When the work is not noticed, when the melting temperature is too high, the lining may be melted and eroded; this will greatly reduce the service life of the lining. Therefore, it is necessary to pay attention to it during the melting process. For example, the melting machine must be diligent and pre-work. According to the color of molten iron, the temperature of molten iron can be grasped at any time to ensure the safety of the lining.

For more information about the intermediate frequency electric furnace, diathermy furnace and induction furnace of Kunshan Wantai Electric Furnace Co., Ltd., please contact Xiaobian.