Induction melting furnace preparation and inspection before opening

1. Whether the water gauge pressure indication is normal to determine the cooling water pressure;

2. Check the cooling water tank and whether the pipeline is blocked.

3. Check if the cooling water pipe joints of the thyristor, capacitor, filter reactor and water-cooled cable are corroded or leaking;

4. Check if the inlet water temperature meets the requirements;

5. Whether there are any attachments (such as conductive dust, residual iron, etc.) on the outer surface, gate and bottom of the induction coil. If compressed air is applied,

6. There is no crack at the junction of the fireplace lining and the taphole in the furnace lining. If the crack is more than 3mm, it should be filled with the lining material to repair, and the lining of the bottom and the slag line should be partially corroded or thinned;

7. Check whether the copper wire and wire joints of the main circuit have heat and discoloration caused by poor contact, and if necessary, tighten the screws;

8. Check whether the instrument indication on the control panel of the control panel in the cabinet is normal;

9. Check if the leaking alarm device is normal and indicate whether the current is within the determined value;

10. Test the oil pump to check whether the hydraulic system oil level, pressure, leakage, tilting furnace and furnace lid cylinder are stable, normal and flexible;

11. Whether there is any debris (magnetic substance) in the bottom of the furnace, it will heat up if it is not removed;

12. Whether there is water or moisture in the molten iron pit, if it should be eliminated and dried;