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0.25T induction melting furnace use and maintenance
1. The tilting of the furnace body is done by operating the cabinet or moving the button box. Press and hold the "L" button, the furnace body will rotate forward, and the furnace mouth will be lowered to allow the molten metal to pour out from the mouth of the furnace. When the button is released, the furnace will remain in the original tilt state, so the furnace body can be rotated to stay at any position. Press and hold the "down" button and the furnace will rotate backwards until the button is released in the horizontal position.
In addition, there is an “Emergency Stop” button, in case the “Lift” or “Lower” button is pressed and then released, the button can not be automatically bounced back, immediately press the “Emergency Stop” button to cut off the power. The furnace body stops rotating;
2. When smelting, there must be sufficient cooling water in the sensor. Always check whether the water pressure and water temperature of the inlet and outlet pipes are normal during smelting;
3. The cooling water pipe should be cleaned regularly with compressed air, and the compressed air pipe can be connected to the joint on the water inlet pipe. Shut off the water source before disassembling the pipe joint;
4. When stopping the furnace in winter, it should be noted that there should be no residual water in the induction coil, and it must be blown off with compressed air to prevent frost cracking sensor;
5. When installing the busbar, tighten the connecting bolts and check if the bolts are loose after opening the furnace;
6. After the furnace is opened, it is necessary to regularly check whether the joints and fastening bolts are loose, and pay more attention to the bolts that connect the conductive plates;
7. When the wall is etched, it should be repaired. The repair is divided into two cases: full repair and partial repair:
7.1. Comprehensive repair
Used when the wall is evenly etched to a thickness of about 70 mm.
The patching steps are as follows:
7.1.1. Scrape all slag attached to the crucible wall until a white sintered layer is exposed;
7.1.2. Place the same die as when the furnace was built, set the center and fix it on the upper edge;
7.1.3. Prepare quartz sand according to the formula and operation method provided in items 5.3, 5.4, and 5.5;
7.1.4. Pour the prepared quartz sand between the crucible and the ram and use φ6 or φ8 round steel;
7.1.5. After the compaction, add the charge to the crucible and heat to 1000 ° C, preferably for 3 hours before continuing to heat up to melt the charge.
7.2 partial repair
Used when the partial wall thickness is less than 70mm or there is erosion cracking above the induction coil.
The patching steps are as follows:
7.2.1. scrape off the slag and deposits at the damage;
7.2.2. Fix the charge with steel plate, fill in the prepared quartz sand, and compact. Note that you should not let the steel plate move in real time;
If the etched part is inside the induction coil, a full repair method is still needed;
8. Regularly add lubricating oil to each lubricating part of the induction furnace;
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