Application method of graphite crucible in intermediate […]
Application method of graphite crucible in intermediate frequency furnace and electric resistance furnace
Graphite crucible can be applied to medium frequency furnace, electric resistance furnace, electric furnace, coke oven and other furnace types. Coke furnace is the most traditional melting method. Therefore, the application method of graphite crucible in medium frequency electric furnace and electric resistance furnace has Certainly different, the following describes the application of graphite crucible in the intermediate frequency furnace, resistance furnace:
1: Graphite coating method: The bottom of the furnace is filled horizontally. The center of the furnace is filled with 200M/M. The three people are reversing and building the solid around (5 minutes) and then putting in 200M/M. The end of the building should be finally built.
2: boring: When the furnace is initially opened, the temperature is raised to 200 ° C to the operating temperature. The temperature is maintained for 3 hours to ensure that the gas and sand holes are attacked.
3: Melting method: Every morning, the low temperature preheating of the first furnace (2 hours before the shift) is put into normal power. At the time of the soup, the different heating curves of the electric power cannot be set due to different refining materials, but the rapid melting is not good.
4: Application: The first furnace is used to make it into the furnace. The bigger the better, the bigger the item. Don't touch it. The second furnace has soup (small amount) to make it easy to melt new materials, absolutely not melting quickly, EAF,There is no melting of molten soup inside, and the attached oxide should be removed at any time.
5: The cause of the poor graphite crucible: the reason for the vertical break is uneven distribution of the back material, and the position of the crucible is not in the impact operation when the soup is melted. Cross the cause. It is most likely to attack the upper part, and the lower part quickly melts the soup. The upper part is broken: the back filler is not, and the graphite crucible is oxidized and impacted. Partial melt loss: After the melting, the metal material is not continuously input.