Contact
Tel: 18037961302
Sales hot line ( 24 hours  service): 18037961302

E-Mail: firstfurnace@gmail.com

whatsapp:+8618037961302

Adress: Luoxin Industrial Park, Luoyang, Henan
  • Products
  • Gear hardening machine

    Large diameter steel pipe quen

    Piston rod quenching and tempe

    Hand-held induction heater

    Grinding rod quenching and tem

    Induction forging machine

    induction heating machine 

    Induction heater

    High frequency induction heate

    Super audio induction heating

    Super audio induction heating

    Guideway quenching integrated

    Quenching equipment for machin

    Round steel end heating furnac

    Steel pipe heat treatment prod

    Square steel quenching and tem

    Sucker rod quenching and tempe

    Thickened petroleum steel pipe

    Round steel quenching and temp

    Steel pipe quenching and tempe

    Steel plate quenching and temp

    Induction Hardening Machine&nb

    Flywheel ring gear high freque

    Oil drill pipe quenching and t

    Iron induction furnace

    Aluminum melting furnace

    Copper melting furnace

    Small steel melting furnace

    Electric furnace industry news(电炉新闻)
        

    How are induction melting furnaces classified? How to choose an induction melting furnace ?

    Induction melting furnaces have been widely used in factory production. According to the frequency of current, induction melting furnaces can be divided into three categories: high frequency and power frequency. High-frequency induction melting furnaces are mainly used in experimental research rooms due to the high current frequency and small capacity of the crucible . In the production of factories, they are mostly used with power frequency induction melting furnaces . According to the structure of induction melting furnace , it can be divided into induction melting furnace and cored induction melting furnace . Considering the current frequency used, it can be divided into medium frequency induction melting furnace , power frequency induction melting furnace and cored induction melting furnace . The current frequency used by the induction melting furnace is power frequency, so it is also called power frequency cored induction melting furnace .

    1. Induction melting furnace

    The induction melting furnace is used for the smelting of steel, iron and non-ferrous metals. The furnace manufacturer has serialized induction melting furnaces and can provide complete sets of equipment including power supply. The parameter table of induction melting furnaces lists the technical parameters of several commonly used induction melting furnaces for melting steel and iron , which can be selected by users. For reference, the technical parameters of each manufacturer may be slightly different.

    The structure of the induction melting furnace with a furnace capacity of less than 250 kg is relatively simple, and there is no magnetizer. The furnace shell is made of aluminum alloy and divided into two halves. The middle pad is made of asbestos cement board, which is connected by bolts to form a circular aluminum shell; induction coil It is wound by a rectangular pure copper tube, a brass stud is welded to the coil, and a brass nut is used to connect the coil and the column together. A certain gap is left between the turns of the coil, and air is used for insulation between the turns. The outer surface of the coil is coated with moisture-proof paint. The whole induction coil is fixed on the aluminum shell through the two ends of the column. The tilting of the furnace is that the motor drives the furnace body to rotate after passing through the reducer.

     

     250 kg induction melting furnace

    250 kg induction melting furnace

     

    Induction melting furnace parameter table

    Capacity kg

    150

    250

    500

    1000

    Current frequency Hz

    1000

    1000

    1000

    1000

    Rated power kW

    100

    160

    250

    500

    Voltage V

    700

    700

    700

    700

    Sensor voltage V

    700

    700

    1400

    1400

    Rated temperature ℃

    1600

    1600

    1600

    1600

    Melting rate ( kg/h)

    130

    200

    380

    750

    Crucible inner diameter  height /mm

    Φ255 X400

    Φ300 x 500

    Φ 5 00 x 560

    Φ 500 x720

    Coil: inner diameter height /mm

    Φ400 x 450

    Φ450 x 580

    Φ 560 x 650

    Φ700 x 800

    Coil turns turn

    17

    15

    19

    Parallel 12 + 12

    Cooling water consumption / (t/h)

    5

    7.5

    10

    18

    The main part of the furnace lining is a crucible , which is generally smashed with refractory materials, but iron crucibles are used when melting low melting point alloys such as aluminum and zinc , which have higher melting efficiency and high power factor of the inductor.

    Crucibles rammed with refractory materials generally use acidic linings, mixed with quartz sand and boric acid, and then dry rammed. Some factories use alkaline linings for some special requirements, such as solving the problem of cracks in complex castings. Generally, magnesia is used ( Mg 85% its refractoriness is about 2000 ℃ , it can resist alkaline slag, and slag-making materials can be added in the furnace to remove phosphorus and sulfur. In the furnace surface part, because the refractory material cannot contact with the molten metal and is well sintered, 2% -3% water glass is often added .


    Regarding the furnace capacity, 500kg induction melting furnace, there is also a steel structure for the furnace shell, the coil is provided with a magnetic conductor, and the tilting of the furnace body adopts a hydraulic drive.

     500kg induction melting furnace

      For a 1T induction melting furnace with a furnace capacity, the furnace shell is generally of steel structure, with magnets around the coil, and the furnace body is tilted by hydraulic transmission. Figure 12-74 shows an induction melting furnace with a furnace capacity of 1000kg. There is also an induction melting furnace with a furnace capacity of 1000 kg. The furnace shell is made of aluminum alloy. There is no magnetization around the induction coil, but the tilting of the furnace body uses hydraulic transmission. Figure 12-75 shows such a furnace. Compared with the two, the furnace capacity is under the same conditions. Of course, the induction melting furnace with a steel structure and a permeable magnet has a high cost, but its advantage is that the furnace has a strong structure and is safe and reliable to use. 

    1T induction melting furnace 

    Figure 12-74 Steel shell induction melting furnace

     

    In order to improve the melting rate of induction melting furnaces , some furnace manufacturers have introduced fast melting furnaces , which means that the input power to the inductor is increased, the melting time of the metal is reduced, and the melting rate of the furnace is increased, but the melting is increased. The electricity consumption per unit of metal. Table 12-17 lists some technical parameters of induction melting furnaces for rapid smelting .

     Table 12-17 Technical parameters of fast melting furnace

    Capacity kg

    150

    250

    500

    1000

    Current frequency Hz

    1000

    1000

    1000

    1000

    Rated power kW

    160

    250

    400

    800

    Voltage V

    700

    700

    700

    700

    Sensor voltage V

    700

    700

    1400

    1400

    Rated temperature ℃

    1600

    1600

    1600

    1600

    Melting rate / ( kg/h)

    150

    250

    500

    1000

    Cooling water consumption / (t/h)

    5

    7

    10

    18

     

    For the furnace body structure of the induction melting furnace with a relatively large furnace capacity see the figure . The coil pressing device uses a spring to fasten the coil from the top of the coil; the magnetizer is installed on the periphery of the coil to prevent magnetic flux leakage in order to save energy and at the same time The magnetic conductor strongly supports the coil from behind, which enhances the stability of the coil and resists the expansion force of the furnace lining; the induction coil is wound with a rectangular pure copper tube; the insulation layer of the coil is insulated by glass tape, and the whole coil is dried by dipping; According to production needs, acidic, alkaline and neutral lining materials can be used for dry furnace building; the detection device for furnace leakage if a furnace leakage occurs, an alarm will be issued before the liquid metal reaches the coil. The tilting of the furnace body is driven by a hydraulic cylinder.

    Schematic diagram of furnace structure  

     

    Schematic diagram of furnace structure

    a furnace cover 2- coil pressing device 3 - magnetic conductor 4 - induction coil

    5— Insulation layer 6 — Furnace lining 7 — Leakage detection device

     

    The induction melting furnace used for melting non-ferrous metals has the same structure as the induction melting furnace for melting steel , except that the technical parameters are somewhat different, and the materials used in the crucible are different. The non-ferrous metal melting crucible useful for refractory ramming junction, is also useful graphite crucible , for the smelting of lead, zinc, magnesium, aluminum and aluminum crucible made of cast iron plate.

     

    Table 12-18 Aluminum melting furnace

    Rated Capacity

    t

    rated power

    kW

    Rated frequency

    Hz

    Melting rate

     (t/h)

    Operating temperature

    Inductor voltage

    V

    Power frequency incoming line

    Voltage V

    Cooling water consumption

     

    (t/h)

    0.3

    160

    1000

    0.2

    780

    700

    3N-380

    5

    0.5

    250

    1000

    0. 35

    780

    1400

    3N-380

    8

    0. 8

    350

    1000

    0. 53

    780

    1400

    3N-380

    12

    1

    500

    1000

    0. 8

    780

    1400

    3N-380

    15

    1.6

    750

    1000

    1.25

    780

    2000

    3N-10K

    20

    1.6

    1000

    1000

    1.65

    780

    2000

    3N-10K

    twenty two

    3. 15

    1500

    500

    2.5

    780

    2000

    3N-10K

    25

    Table 12-19 lists the relevant technical parameters of the induction copper melting furnace.

    Table 12-19 Copper melting furnace

    Rated Capacity

    t

    rated power

    kW

    Rated frequency

    Hz

    Melting rate

    (t/h)

    Operating temperature

    ℃ .

    Inductor voltage

    V

    Power frequency incoming line

    Voltage V

    Cooling water consumption

    (t/h)

    0.3

    160

    1000

    0. 25

    1300

    700

    3N-380

    5

    0.6

    250

    1000

    0. 47

    1300

    1400

    3N-380

    8

    1

    500

    500

    0. 98

    1300

    1400/2000

    3N-380/660

    12

    1.5

    800

    500

    1.65

    1300

    2000

    3N-660

    15

    3

    1600

    500

    3.35

    1300

    2000

    3N-660

    20


    Small -type induction melting furnace  may be used for small batch casting, precision casting and laboratory, melting the noble metal can also be used, current frequency 3000 - 10000Hz O

     

     Small -type induction melting furnace


    Small -type induction melting furnace

    The picture shows the lifting induction melting furnace, all work is done on the level ground, and the operation is convenient and safe. This furnace is suitable for melting different kinds of alloys.

    Lift type induction melting furnace  

     

    Lift type induction melting furnace

     

     

     

     

     

     

     

     


    Copyright© 2007-2013 songdao Electric furnace manufacturing Co,.Ltd All Rights Reserved
    Tel:18037961302 Sales hot line ( 24 hours service): 18037961302
    E-Mail:firstfurnace@gmail.com
    Adress: Luoxin Industrial Park, Luoyang, Henan