How to maintain the medium frequency electric furnace?
1. Regularly remove the dust in the power cabinet
In particular, the outside of the thyristor core shall be wiped clean with alcohol. The frequency conversion equipment in operation generally has a machine room, but the actual working environment is not ideal. In the smelting and forging process, the dust is very large and the vibration is strong. In the diathermal quenching process, the equipment factory is close to the pickling and phosphating equipment, and there are more corrosive gases, which will damage the components of the relevant equipment of the medium frequency electric furnace and reduce the insulation strength of the equipment. When there is a lot of dust, the component surface discharge often occurs. Therefore, it is necessary to pay attention to frequent cleaning to avoid problems;
2. Regularly check whether the binding of water pipe joint is firm
When tap water well water is used as the cooling water source of medium frequency electric furnace equipment, scale is easy to accumulate and affect the cooling effect. In case of aging and crack of plastic water pipe, the equipment shall be replaced in time. When running in summer, using tap water well cooling is often prone to condensation. The use of circulating water system should be considered. When condensation is severe, the operation should be stopped immediately;
3. Regularly replace or clean the key components of relevant equipment of medium frequency electric furnace
4. Regularly overhaul the equipment
The bolts of various parts of the equipment and the contacts of fastening contactors and relays shall be checked regularly. In case of looseness or poor contact, they shall be repaired and replaced in time. They cannot be used reluctantly to avoid major accidents.
5. Regularly check whether the wiring of the load is excellent and whether the insulation is firm.
The oxide scale accumulated in the diathermal induction ring shall be cleaned in time; If the heat insulation furnace lining has cracks, it shall be replaced in time; After the furnace lining is updated, the smelting furnace shall be checked carefully; The loads of insulated frequency conversion equipment are set at the work site, and the faults are relatively high, which are often ignored. Therefore, strengthening the protection of the load and avoiding the faults involving frequency conversion power supply is an important part to ensure the normal operation of the equipment.
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11-29
Detection method of common faults of medium frequency electric furnace
1. First, observe whether the indication values of the four small meters in the if cabinet are normal. The rectifier operated voltmeter is 30V, the rectifier pulse ammeter is 130 ~ 150mA, the inverter operated voltmeter is 12V, and the inverter pulse ammeter is 100 ~ 120mA. If the value is withi
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11-29
How to maintain the medium frequency electric furnace?
1. Regularly remove the dust in the power cabinetIn particular, the outside of the thyristor core shall be wiped clean with alcohol. The frequency conversion equipment in operation generally has a machine room, but the actual working environment is not ideal. In the smelting and forging proc
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11-29
How to maintain the electromagnetic heating controller?
In order to ensure the uninterrupted operation of the electromagnetic heating controller, it is necessary to protect and maintain it regularly:1. Always add lubricant to the movable part of the electromagnetic brake.2. Check the length of armature stroke regularly. During the operation o
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11-29
Causes of abnormal starting of medium frequency electric furnace
What is the cause of abnormal start of medium frequency electric furnace?Lack of phase of rectifier: the fault is that the sound is abnormal during operation, the larger output voltage rises below the rated value, and the abnormal noise announced by the power cabinet is becoming larger and l