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    2019 the most complete intermediate frequency furnace commonly used parameter calculation method

    Many people are asking how to calculate frequency furnace power, frequency, how to count, incoming and outgoing to choose more than rough and so on, which are involved in the calculation of intermediate frequency furnace, electric furnace today small pine guide you summarize finishing 2019 the most comprehensive The intermediate frequency furnace commonly used parameter calculation method, I believe it will help you.

    1. Intermediate frequency furnace power calculation method 

    The power of the intermediate frequency furnace is divided into three categories: medium frequency heating furnace power, medium frequency furnace quenching power and medium frequency furnace melting power. The calculation method is as follows:

    Medium frequency heating furnace power calculation:

    P= × × )÷( 0.24 × ×η)

    Intermediate frequency furnace notes:

    P = equipment power ( KW )

    C= material specific heat ( kcal/kg °C)

    G = workpiece weight ( kg )

    T = heating temperature, Heating (°C)

    t= time ( )

    η comprehensive thermal efficiency of the equipment, generally 0.5 0.7 , and 0.4 of the shaped parts .

    For example, a forging factory has a forging blank of Φ 60 × 150 mm , a working cycle of 12 seconds piece (including auxiliary time), and an initial forging temperature of 1200 °C.

    Calculated as follows: P = 0.17 × 3.3 × 1200 0.24 × 12 × 0.65 = 359.61KW

    According to the above calculation, an intermediate frequency induction furnace with a rated power of 400 KW can be configured .

    According to the basic principle of electromagnetic induction, the three-phase power frequency alternating current is rectified into a direct current, and then the direct current is converted into an adjustable intermediate frequency current, and a load composed of a capacitor and an induction coil is supplied (the coil and the capacitor can be connected in parallel or in series). A high-density magnetic line is generated in the induction coil, and the metal material contained in the induction coil is cut to generate a large eddy current in the metal material. This eddy current also has some properties of the intermediate frequency current, that is, the free electrons of the metal itself flow in the metal body with resistance to generate heat.

    Medium frequency furnace quenching power calculation:

    P= 1.5 — 2.5 )× S

    S= hardening area of the workpiece (square centimeter)

    Intermediate frequency furnace smelting power calculation:

    P=T/2

    T = electric furnace capacity ( )

    2. Intermediate frequency electric furnace frequency calculation 

    δ = 4500/d2

    4500= coefficient

    d = workpiece radius

    The above is the calculation method of the intermediate frequency furnace power. I believe that you have already learned how to calculate the power of the intermediate frequency furnace. However, in the actual application process, you will find that the intermediate frequency furnace accessories are in good condition, but the power is not going up. Timely adjustment of the power of the intermediate frequency furnace is fine. For the method of adjusting the power of the intermediate frequency furnace, please pay attention to how to adjust the power of the intermediate frequency furnace .

     

    3. Selection of the capacity of the rectifier transformer of the intermediate frequency induction furnace 

    Electric furnace power ( kW )

    Transformer capacity ( kVA )

    50

    100

    100

    160

    200

    250

    250

    315

    350

    400

    500

    630

    750

    100 0

    ·······

     

     

    4. Selection of the inlet section of the intermediate frequency furnace

    Power supply ( kW )

    Copper core cable ( mm2 )

    Aluminum core cable ( mm2 )

    50

    25

    35

    100

    50

    75

    200

    95

    150

    250

    2*70

    2*120

    350

    2*95

    2*185

    500

    3*95

    3*185

    750

    4*95

    4*185

    1000

    5*95

    5*185

     

    5. Selection of cross section of output cable of medium frequency electric furnace 

    Output frequency ( KHZ )

    Power ( kW )

    0.5

    1.0

    2.5

    4.0

    8.0

    50

    35

    50/90

    70

    95

    120

    100

    50

    70

    95

    2*70

    2*95

    200

    95

    2*70

    2*95

    4*70

    4*95

    250

    2*70

    2*95

    3*70

    5*90

    5*95

    350

    2*95

    3*95

    4*95

    5*100

    5*100

    500

    3*95

    4*95

    5*100

    5*150

    5*200

    750

    4*95

    5*100

    5*150

    5*200

    5*150 *3

    1000

    5*100

    5*150

    5*200

    5*150 *2

    5*150 *4

     

    6. Selection of cooling water flow 

    6.1 Intermediate frequency furnace inlet pressure: 0.15 0.3Mpa

    6.2 cooling water temperature at 30 within the range °, water hardness does not exceed . 8 degrees, turbidity is not greater than the PH value of 6.5 . 8 range.

    6.3 The following are the requirements of the traffic

    Power supply ( kW )

    Heating power supply (including capacitors)

    Diathermy

    Quenching

    Melting

    50

    4

    4

    4

    5

    100

    4

    4

    4

    8

    200

    5

    6

    6

    12

    250

    6

    7

    8

    14

    350

    7

    12

    12

    18

    500

    10

    15

    15

    twenty four

    750

    18

    25

    25

    40

     

    Note: The full-frequency circulatory cooling system is recommended for medium frequency furnaces.

    The above is the calculation method of the commonly used parameters of the intermediate frequency furnace summarized by the pine guide intermediate frequency furnace, so that you can choose the right intermediate frequency furnace to save your cost.

     


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