What should I do if there are cracks in the ramming material of the intermediate frequency furnace?

What should I do if there are cracks in the ramming material of the intermediate frequency furnace?

The intermediate frequency furnace is a must-use equipment in the smelting industry. The intermediate frequency furnace ramming material is the fuel used for the intermediate frequency furnace smelting. However, if it is used improperly, it is prone to cracks. How to solve the cracks? Hubei intermediate frequency furnace ramming material Your answer:

1) Improve the blasting method and use the core-pulling tire tool to avoid transverse cracks caused when the tire tool is pulled out;

2) Improve the oven process and slowly heat up; 3) After opening a furnace, take perfect measures of heat preservation and slow cooling. Forging, casting, steel rolling, steel making, welding, heat treatment

4) A mica pad with good sliding property is added between the induction coil and the furnace lining to reduce the resistance of the induction coil when the furnace lining expands and contracts.

5) Adjust the particle size gradation ratio (increase the ratio of coarse particles)

The problem of cracks has been solved. How to avoid and improve the service life of the intermediate frequency furnace lining in the future? Please read below:

1. If the furnace volume ratio of the intermediate frequency furnace is too large, the cost will be increased, and if it is too small, it is prone to splashing and reduce the service life of the intermediate frequency furnace lining, so the furnace volume ratio at the time of design should be maintained.

2. The loading amount of the converter should be reasonable. In addition to the appropriate furnace volume ratio, the appropriate molten pool depth should also be ensured (must exceed the penetration depth of the oxygen flow to the molten pool).

3. Quantong Kiln Industry recommends to determine a scientific and reasonable oxygen supply system to ensure the speed of impurity removal, slag formation, removal of gas and inclusions in steel, and reasonable control of end-point carbon and temperature.

4. Under the premise of good molten steel casting effect, the lower the temperature control and end point temperature in the steelmaking process, the better.

5. The service life of the intermediate frequency furnace lining is affected by the quality of the raw materials used in converter steelmaking, such as molten iron, scrap steel, slag-forming materials, intermediate frequency furnace charges, slag conditioners and fluxes, etc.