site logo

Steel shell intermediate frequency furnace

Steel shell intermediate frequency furnace

A. What is a steel shell intermediate frequency furnace?

The steel structure induction melting furnace with the hydraulic cylinder as the tilting furnace is commonly known as the steel shell intermediate frequency furnace. The steel shell intermediate frequency furnace mainly includes: closed furnace frame, inductor coil, yoke, furnace cover, dust removal system, tilting cylinder, furnace cover rotating cylinder, high-pressure carbon-free hose, furnace mouth and furnace bottom pouring fixed material, a full set of stainless steel inlet Water distributor, return water collector, clamp, water inlet and outlet stainless steel water separator, etc.

  1. Steel shell intermediate frequency furnace price selection
model Steel shell intermediate frequency furnace price
Rate power
(KW)
Input voltage
(V)
Melting time
(T/h)
Water Consumption
(T/h)
power consumption(Kw/T) voltage
(V)
capacity
(T)
Total price
GWG-0.5T 400 660 0.5 10 720 800 0.5 Total:¥148800RMB
GWG-0.75T 600 660 0.9 12 630 2700 0.75 Total:¥168800RMB
GWG-1 T 800 380-660 1 18 630-600 1400-2500 1 Total:¥221000RMB
GWG-1.5T 1200 380-660 1.5 22 630-600 1400-2500 1.5 Total:¥230000RMB
GWG-2T 1600 380-660 2 28 600-550 1400-2500 2 Total:¥361500RMB
GWG-3T 2000 660-1000 3 35 600-530 2300-5000 3 Total:¥447000RMB
GWG-5T 3000 660-1000 5 45 600-530 2300-5000 5 Total:¥643000RMB
GWG-6T 3500 660-1000 6 50 600-530 2500-5000 6 Total:¥743000RMB
GWG-7T 4000 660-1000 7 55 600-530 2500-5000 7 Total:¥843000RMB
GWG-8T 5000 660-1000 8.5 65 600-530 2700-5000 10-15 Total:¥940000RMB

C. How to choose the structure of steel shell intermediate frequency furnace?

1. The closed channel steel frame structure of the steel shell intermediate frequency furnace is easy for daily maintenance and repair; the channel steel is welded into the basic structure of the furnace frame, the overall structure is simple and strong, and the large furnace body inclination angle is 95 degrees.

2. The surface of the steel shell intermediate frequency furnace platform is knotted with refractory materials, which can protect the furnace body more fully and the furnace platform will not be deformed.

3. The steel structure is welded to the steel shell intermediate frequency furnace, equipped with appropriate supports and clamping parts to fix the induction furnace coil and yoke; the upper part of the induction furnace is detachable, so that it is more convenient to replace the coil.

4. The heavy-duty steel components on both sides of the steel shell intermediate frequency furnace pillars become a solid support for the furnace body, providing a hydraulic tilt axis, and the axis moves outward and upward. Ensure the small movement track of the tapping nozzle, reduce tapping water energy loss, and facilitate automatic and direct molten steel connection devices to receive molten steel.

5. The induction coil of the steel shell intermediate frequency furnace is assembled by solid and durable oxygen-free copper pipes. The water-cooled coil and the effective coil are integrally wound by copper pipes. The two turns of the induction coil without segmentation are strictly insulated between adjacent copper pipes and the advanced segmentation technology is adopted. Insulation sheets are implanted between adjacent induction coils, and the coils are insulated. After the paint is sprayed, it becomes a complete structure and is pressed by the upper and lower steel structures in the furnace body. The overall structure is firm and has no deformation problems. The number of turns of the steel shell intermediate frequency furnace coil is appropriate to achieve high electrical efficiency. The copper tube of the induction coil is an oxygen-free copper tube produced by Chinalco Luotong, with a purity of 0.99 and a conductivity of more than 100; the coil is cooled by multiple water channels. Distribute water evenly. The outside of the coil is tightly wound with insulating material. The arc-shaped insulating gasket between turns also ensures uniform coil spacing and facilitates the drainage of moisture.

6. The insulation paint of the induction coil of the steel shell intermediate frequency furnace adopts imported baking enamel paint. After 5 times of spraying and baking, the insulation level can reach H level.

7. The yoke of the steel shell intermediate frequency furnace is evenly stressed by the rail bolts and provides a large holding force to the coil to ensure a long working life of the furnace lining. The yoke is made of cold-rolled oriented silicon steel sheet with a thickness of 0.35mm. After the processing of the silicon steel sheet, the tolerance of the cutting cut flash is <±0.1mm. The bending degree of the steel shell after the intermediate frequency furnace is assembled, and the parallelism guarantees the arc of the coil and the yoke Like contact, lotus coupling. At the same time, the multiple sets of yoke fastening devices are firm and reliable, easy to assemble, disassemble, adjust, and repair, and are evenly distributed along the circumference (error ≤0.5); the liner between the yoke and the coil is made of multiple layers of high-quality insulating materials, including multiple layers Mica board, multilayer ceramic fiber board.

8. The top and bottom of the steel shell intermediate frequency furnace are equipped with formed heat insulation boards and short-circuit rings.

9. The leakage protection system of the steel shell intermediate frequency furnace is safe and reliable. When the molten steel invades or is about to penetrate the refractory materials and coils, it will automatically cut off the power and give an alarm. The furnace leakage protection system is an important part of the entire furnace protection system.

1吨中频炉图片 1吨中频炉

D. What are the advantages of steel shell intermediate frequency furnace?

1) Rugged, durable and beautiful, especially the large-capacity furnace body, which requires a strong rigid structure. From the safety point of view of the tilting furnace, try to use a steel shell intermediate frequency furnace.

2) The yoke made of silicon steel sheet shields and emits the magnetic field lines generated by the induction coil, reduces magnetic flux leakage, improves thermal efficiency, increases output, and saves about 5%-8%.

3) The existence of the furnace cover reduces the heat loss and also improves the safety of the equipment.

4) Long service life, steel shell intermediate frequency furnace has less magnetic flux leakage, and the equipment service life is much longer than aluminum shell furnace. Generally, the normal service life is more than 10 years.

5) The safety performance of the steel shell intermediate frequency furnace is much better than that of the aluminum shell furnace. When the aluminum shell furnace is melting due to high temperature and heavy pressure, the aluminum shell is easily deformed and the safety is poor. The steel shell intermediate frequency furnace uses hydraulic tilting furnace, which is safe and reliable.

E. What are the main uses of steel shell intermediate frequency furnaces?

The steel shell intermediate frequency furnace is mainly used for melting steel, iron, copper, aluminum and alloys. It has the characteristics of high melting efficiency, good power saving effect, uniform metal composition, less burning loss, fast temperature rise, and easy temperature control. It is suitable for various The metal melts.

F. What is the role of the magnetic yoke in the steel shell intermediate frequency furnace?

The yoke is a yoke made of laminated silicon steel sheets. It is evenly and symmetrically divided around the induction coil. Its function is to restrict the leakage of the induction coil from spreading out, improve the efficiency of induction and add people, and reduce it as a magnetic shield The heating of metal components such as the furnace frame also plays a role in strengthening the inductor.

The steel shell intermediate frequency furnace has a built-in profiled magnetic yoke, and the magnetic yoke shielding can reduce magnetic leakage, prevent the furnace from heating, and improve efficiency. At the same time, the yoke plays the role of supporting and fixing the induction coil, so that the furnace body can achieve high strength and low noise.

G. What is the reason for the high temperature of the yoke of the steel shell intermediate frequency furnace?

Red yoke is a common fault phenomenon in the operation of intermediate frequency power supply. First check whether there is any problem with the cooling water system, check whether the water in and out of the red yoke is normal, and whether the pipeline is aging and leaking. If it is normal, then check the following aspects.

(1) The yoke of the intermediate frequency power supply is aging, and the insulation coating between the layers is severely corroded. For this, the silicon steel sheet can be opened for surface coating treatment.

(2) The yoke is stuck with molten steel (iron filings). For this, the yoke can be polished to remove the stuck iron filings.

(3) Check the thickness of the bottom of the furnace. If the bottom of the furnace is too thick, it will cause the yoke to become hot and red.

(4) The temperature of the circulating water inlet is too high, and the internal water temperature of the yoke circulation system is too high to produce gas. Because the gas cannot be discharged, the circulating water cannot circulate, causing the temperature to rise.

(5) After the circulating water pressure becomes smaller or the water path is changed, the water path becomes more or the water pipe becomes larger, and the water flow of other circuits becomes larger, causing the yoke water flow to decrease.