Melting furnace use and maintenance considerations

Core Tip: Reasonable use, proper operation and careful maintenance of the melting furnace power supply are important guarantees for safe operation of the power supply and avoidance of faults. It is especially important to maintain and maintain the power supply on a continuously operating production line. In order to ensure the normal use of the melting furnace and extend the life of the equipment, it is important that the furnace is regularly maintained.

Reasonable use, proper operation and meticulous maintenance of the melting furnace power supply are important guarantees for safe operation of the power supply and avoidance of faults. It is especially important to maintain and maintain the power supply on a continuously operating production line. In order to ensure the normal use of the melting furnace and extend the life of the equipment, it is important that the furnace is regularly maintained.  
1. Regularly check whether the joint seal of the melting furnace water cooling pipe is firm.  
When tap water or well water is used as the cooling water source of the induction heating device, scale is easily accumulated and the cooling effect is affected. When the plastic water pipe ages and cracks, it should be replaced in time. When the medium frequency electric furnace device is operated in the summer, the water condensation in the tap water well is often prone to condensation, and the closed water circulation cooling system should be considered. When the condensation is serious, it should stop running.  
2. Regularly check whether the wiring of the melting furnace load is good and the insulation is reliable.  
Regularly remove dust from the IF power cabinet, especially outside the thyristor die, and wipe it off with alcohol.  
The inverter equipment in operation usually has a dedicated machine room, but the actual working environment is not ideal. In the smelting and forging process, the dust is large and the vibration is strong; in the furnace through the heat-hardening process, the device is often close to pickling and phosphating equipment, and there are many corrosive gases, which will destroy the components of the device and reduce The insulation strength of the device. When there is a lot of dust, the surface discharge of the component often occurs.Therefore, care must be taken to clean the surface of the original parts frequently to prevent malfunctions.  
3. Regularly repair the melting furnace unit  
Check and tighten the bolt and nut crimping of each part of the induction heating equipment. The contact of the contactor relay is loose or poorly contacted. It should be repaired and replaced in time. Do not use it to prevent more accidents.  
4 , the rated voltage and current of the melting furnace are tested  
This periodic inspection can prevent the circuit from appearing. It is necessary to carry out regular and meticulous care of the intermediate frequency electric furnace. This maintenance is the key to increasing the service life of the intermediate frequency electric furnace and is an important prerequisite for ensuring the personal safety of the operators. Since the entire working environment of the intermediate frequency electric furnace is carried out under the conditions of high temperature, high pressure and high current, it is necessary to regularly clean and clean the room where the intermediate frequency electric furnace is placed.  
First, the precautions before opening the furnace  
Electric furnace will need to electrical equipment, water cooling system, brass and other sensors in the furnace inspection opening, only in the case of these devices to intact open furnace, ensure the safety of the heat treatment, or prohibiting the opening of the furnace; determining Personnel who are responsible for power transmission and furnace opening, and the responsible personnel are not allowed to leave the post without authorization. During the work, the external conditions of the sensor and the cymbal must be supervised to prevent people from touching the sensor and cable after power transmission, affecting the intermediate frequency electric furnace. Normal operation or a safety accident.  
Second, the precautions after opening the furnace  
After the medium frequency electric furnace is opened, during the charging, the inside of the furnace should be inspected to avoid mixing with flammable and explosive materials. In order to prevent the occurrence of the capping phenomenon, it is strictly forbidden to directly add the cold material and the wet material in the molten steel, and after the molten liquid is filled to the upper portion, the bulk material should not be added ; in order to avoid the explosion accident, it is necessary to ensure the pouring place and the furnace. There is no water in the front pit, no obstacles . In the pouring, two people need to cooperate, and the remaining molten steel can only be dumped at the place where it is made, and it cannot be dumped everywhere.  
Third, the precautions during maintenance  
When maintaining the medium frequency electric furnace, the internal frequency generator room should be kept clean, and flammable and explosive materials should not be stacked. Repair the furnace with excessive melt loss in time, and avoid the incorporation of iron filings and iron oxide in the furnace to ensure the compactness of the crucible.