The safety protection of the intermediate frequency induction furnace, is the induction electric dan

1. Check the furnace cooling system, electrical control device, inductor copper tube, mechanical transmission device and lifting equipment to confirm that it is in good condition and normal.

2. When the melting damage of the furnace exceeds the regulations, it should be repaired in time before the furnace can be opened.

3. Check the tools used in the melting to ensure that they are complete and dry.

4. Check all kinds of metal materials, their variety, lumpness, moisture and cleanliness should meet the regulations, it is strictly forbidden to mix into sealed boxes, boxes and pipes and other objects and explosives, and during the melting process, it is not allowed to add wet charge.

5. Carefully dry the furnace body and hot metal ladle.

6. During the smelting process, the cooling water must be checked frequently to ensure that the water tank is in a full state, and the power should be cut off immediately when the water tank is short and the smelting should be stopped.

7. The core power frequency electric furnace is used for smelting, and the operator should stand on one side to prevent injury when the furnace lid is rotated and opened.

8. During the smelting process, check the bottom of the furnace and the power meter frequently, and stop the smelting immediately if there are signs of leaking the furnace, so as not to burn out the induction coil and cause accidents.

9. When changing the voltage, it should be adjusted after power-off, and it is forbidden to reverse the power with electricity.

10. Before pouring molten metal into the tilting furnace, the foreign matter on the turntable must be removed to avoid slipping and injuring people.

11 In the event of a power outage, attention must be paid to the heat preservation in the furnace. If the power transmission cannot be restored in a short time, the molten metal in the furnace should be poured out, and when the phenomenon of freezing and sealing "shed furnace" is found, the furnace body should be dumped at a certain angle in time to melt the frozen part, and it is forbidden to poke it open with ironwood.

12. It is strictly forbidden to stack sundries in the transformer room and capacitor room, and keep the room dry and well ventilated.

13. The repair of large-scale induction furnace should be carried out by power-off, and the staff should pay attention to the safety of themselves and the surrounding personnel when entering and exiting the furnace and operating, so as to prevent being smashed and bruised.

14 When lining the furnace and pounding the crucible, it is strictly forbidden to mix iron filings and iron oxide. The pounding crucible must be dense.

15. No water is allowed to accumulate in the working site and the pit in front of the furnace, and no sundries are allowed to be piled up, so keep the site clean and tidy and the road smooth.

Medium frequency furnace induction electricity is a kind of high-frequency electric field, which has a certain danger to the human body. When operating the intermediate frequency furnace, the following safety precautions should be noted:

1.Wear protective clothing and insulating gloves to avoid direct contact with the induction electricity of the intermediate frequency furnace;

2.When operating the intermediate frequency furnace, it should be ensured that the insulation performance of the equipment is good and leakage is avoided;

3.When the cavity is changed during the operation of the intermediate frequency furnace, attention should be paid to prevent the generation of arc and judgment sparks, so as to avoid causing fire and **;

4.When operating the intermediate frequency furnace, the relevant operating procedures and safety standards should be complied with to avoid accidents caused by improper operation.

In short, the induction electricity of the intermediate frequency furnace has a certain degree of danger, and it is necessary to pay attention to safety during operation.

Intermediate frequency furnace induction electricity is a dangerous power source, due to its large working voltage, improper use is easy to cause electric shock, fire and other accidents. When using the intermediate frequency furnace to induce the fierce section of electricity, it is necessary to check whether the electrical equipment is safe, whether the wiring is correct, whether the power supply is stable, and be equipped with necessary safety protection devices. During the use of the stool, it should be forbidden to approach irrelevant and intellectual travel personnel to avoid electric shock injury.

In addition, the induction electricity of the intermediate frequency furnace should be checked regularly and the damaged cables and plugs should be replaced to ensure safe use.

The induction electric field of the intermediate frequency furnace has a certain degree of danger, but it is a low-temperature and low-heat danger, and it may only cause burns after contact, as long as the safety operation procedures are observed, it will not cause serious injuries and slag damage.

The induction electricity generated by the medium frequency induction furnace is not dangerous. Generally only a few tens of volts. Acorn, but the intermediate frequency power supply used in the intermediate frequency furnace.

The generated IF voltage is very high. Generally 750 volts to 1500 volts. There are also higher clear beams.

to 3000 volts and above. That's dangerous.

1.The preparation before opening the furnace has aCheck the furnace lining (excluding mica sheets, asbestos plates), when the lining is less than 65 80mm due to wear, the furnace must be stopped.

b.Check whether there are cracks in the furnace lining, if there are cracks more than 3mm wide, fill in the auxiliary furnace material for repair. c.

Make sure the cooling water is unobstructed.

2.Feeding instructions: a

After putting in the starting block, check whether the stove block is actually placed at the bottom of the furnace. B. Do not add damp charge CThe cutting material should be placed on the residual liquid after tapping as much as possible, and the amount of input should be less than 1 10 of the total amount of the furnace, and it must be evenly put according to the furnace section.

d.The addition of tubular or hollow charges (closed containers) should be prevented to prevent the danger of sharp expansion of air in hollow materials after heating. e.

Regardless of the condition of the charge, the next charge should be fed before the previous charge has melted.

3.Management of tapping (or tapping) temperature. The tap temperature should not exceed the specified value, as excessive temperatures will reduce the service life of the furnace lining.

1. Medium frequency induction heating frequency conversion equipment, there are two types: generator type and thyristor type. The maximum voltage of the intermediate frequency current can reach about 750V, and the rules of safe electricity consumption must be observed when using it (the power of the inverter is generally greater than 100KW). The IF room should be well ventilated, clean, tidy and dry.

The IF device must have more than two people to start the operation, and the person in charge of the operation must be designated. The operator should be familiar with and abide by the operating procedures of the intermediate frequency equipment, and wear the prescribed protective equipment. The workpiece should be removed from burrs, iron filings and oil scale, otherwise it is easy to produce arcing, and the workpiece should also be prevented from contacting the sensor to produce arcing during operation.

When using intermediate frequency quenching machines, attention should be paid to the safe operation procedures of electrical, mechanical and hydraulic transmissions. The equipment needs to be repaired by a special person, and the capacitors and other capacitors should be discharged with a discharge rod before repair. It is strictly forbidden to rush to repair with electricity.

2. Power frequency induction heating equipment is to use industrial electrical frequency, low voltage and high current to heat, quench or normalize large workpieces. When using, the rules for safe electricity use should be observed.

3. In order to prevent explosion and injury during the power frequency induction heating of large workpieces, it is necessary to strictly abide by the power frequency heat treatment operation procedures and the corresponding large heat treatment process regulations during operation. Ultrasonic flaw detection should be carried out on large workpieces piece by piece, and workpieces with defects such as white spots, serious segregation and porosity are found after flaw detection, and heating with labor frequency equipment is prohibited. The workpiece should be free of burrs, iron filings and oil stains to prevent arcing.

In the production operation, the person in charge must be appointed, and the operator must be familiar with and comply with the operating procedures of the power frequency equipment.

(1).The medium frequency induction furnace is composed of the medium frequency induction furnace area, the holding area, the front furnace, the feeder, the chimney and other main parts. The control part is mainly the combustion system and feeding system, and the operation process is program control.

2).Working process: Aluminum alloy ingots or return materials with the same or similar composition of scrap aluminum parts of the same or similar composition are loaded into the feeding trolley Each feeding amount is about 300kg, the aluminum alloy ingots or return materials in the charging trolley are put into the combustion chamber of the intermediate frequency induction electric furnace area through the feeding machine, the intermediate frequency induction furnace is heated, the exhaust gas and smoke generated in the process of the intermediate frequency induction electric furnace are discharged through the chimney, and the low-temperature aluminum liquid after the intermediate frequency induction electric furnace is flowed into the lower insulation area from the medium frequency induction electric furnace area with a higher position. The molten aluminum is raised to the specified temperature in the holding zone and insulated.

Open the furnace door in the holding area, refine, degassing and slag removal of the molten aluminum, purify the molten aluminum, and keep the temperature of the molten aluminum within the set temperature range of the aluminum. The molten aluminum enters the front furnace through the overflow dam at the bottom of the holding area, and the molten aluminum can be released through the aluminum outlet of the front furnace.

The intermediate frequency induction furnace uses the intermediate frequency power supply to establish the intermediate frequency magnetic field, so that the induction eddy current inside the ferromagnetic material is generated and heated, so as to achieve the purpose of heating the material. The intermediate frequency heating furnace uses 200-2500Hz intermediate frequency power supply for induction heating, smelting and heat preservation, and the intermediate frequency electric furnace is mainly used for smelting carbon steel, alloy steel, special steel, and can also be used for smelting and temperature raising of non-ferrous metals such as copper and aluminum. The equipment is small in size, light in weight, high in efficiency, low in power consumption, fast in melting and heating, easy to control in furnace temperature, and high in production efficiency.