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

E-Mail: firstfurnace@gmail.com

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Adress: Luoxin Industrial Park, Luoyang, Henan
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    30t Induction melting furnace

    product description

        

    1Equipment overview

    Induction melting furnace is an efficient smelting equipment that melts scrap steel by electromagnetic induction heating. The energy conversion process is electro-magnetic-electric-heating, in particular, the power frequency power supply outputted by the rectifier transformer is converted into a single-phase AC power source matching the required frequency of the load in an AC-DC-AC mode, and is generated in the steel scrap in the furnace. High-strength magnetic field, the steel scrap in the furnace induces a strong electric field under the action of a magnetic field and forms an internal eddy current, thereby forming a heat source to melt itself. This heating method of generating thermal energy by itself inside the charge is an efficient way of melting.

    image.png

    The Induction melting furnace produced by our company has the following characteristics:

    1 The input voltage is high and the output voltage is high. For the rated capacity of this program 30t Induction melting furnace, our company is designed according to the 1750V incoming line voltage specification, and the sensor load output voltage is nominally 6300V.

    2 High melting rate. The rated design tonnage tapping amount is reached, and the continuous hot furnace smelting time is controlled at about 75 minutes.

    3 tons of steel has low energy consumption. It is 5% lower than other manufacturers' equipment, which is better than the first-class standard in GB/T30839.31-2014 "Industrial electric heating device energy consumption: medium frequency centerless Induction melting furnace".

    4 Digital, integrated, and highly automated. The company's power system control board is a digital chip type control board. The power amplifier board is an integrated control board integrating power amplification, vulnerability detection and output. The smelting management system realizes the monitoring and management of the entire equipment by using S7-300PLC+ high-equipped host as hardware and STEP7+WINCC as software.

    2Technical solutions and technical parameters

    2.1 Technical solutions

    For the 30t Induction melting furnace of this project, the company adopts the following technical solutions:

     Equipment configuration mode: one electric two furnaces. A furnace is normally smelted, and a furnace is used for furnace maintenance.

     Switching mode: mechanical change of furnace switch.

     Feeding method: The hydraulic feeding trolley on the platform is fed after the furnace.

    The method of steel tapping: hydraulic tilting furnace, tapping nozzle and tapping steel tapping.

     Transformer: A single 24-pulse rectifier transformer is used.

    Automatic control system: The hardware adopts S7-300 and configures industrial control computer.

    The equipment system diagram is as follows:

    image.png 

    ѹعHigh voltage switchgear

    ѹRectifier transformer

    ƵԴFrequency change power

    ͽ翹Oil immersion reactor

    Capacitor bank

    е¯أMechanical furnace change switch

    ¯壺Furnace body

    ҺѹվHydraulic station

    2.2Technical parameters

    ITEM

    UNIT

    PARAMETER

    REMARK

    Basic parameters

    Rated capacity

    t

    30


    Max capacity

    t

    40

    Depending on the furnace building process

    Rated tapping temperature

    1600


    Melting time

    min

    755%

     Note1

    Melting rate

    t/h

    23-25

     Note1

    Power consumption

    KWH/t

    5005%

     Note1

    Frequency change power

    Rated power

    KW

    16000


    Inlet voltage

    V

    1750

    mid-gear

    Rectification mode

    P

    24


    Mid-frequency

    HZ

    150


    Output voltage

    V

    6300



    Cyclic mode


    Closed (internal and external double cycle)

    Cooling water

    Pressure

    MPa

    0.1-0.12

    Outlet0.05

     Flow

    t/h

    260


    Inlet temperature

    35


    Temperature raise

    8


    Induction melting furnace body

    Inner diameter of inductor

    mm

    1900


    Height of inductor

    mm

    2900


    Voltage of inductor

    V

    6300



    Cyclic mode


    Closed (internal and external double cycle) Can choose to open

    Cooling water

    Pressure

    MPa

    0.2-0.3


    Flow

    t/h

    450

    Single furnace 300

    Inlet temperature

    40


    Temperature raise

    12


    Hydraulic system

    Working pressure

    MPa

    12


    Hydraulic medium


    Flame retardant anti-wear hydraulic oil N68


    Diameter of cylinder

    mm

    280


    Rectifier transformer (single set 24 pulses, with electrostatic shielding and secondary low voltage relay protection)

    Rated capacity

    KVA

    21000


    Reference model


    ZSSP-21000/22

    /1.75*4


    First line voltage

    KV

    22

    Reference temporarily

    Second line voltage

    V

    1750

    mid-gear

    Impedance voltage


    10%


    Adjust voltage mode


    Non-excitation voltage regulation


    Cooling mode


    Forced oil circulation water cooling



    Cyclic mode


    Closed (internal and external double cycle)

    Cooling water

    Pressure

    MPa

    0.1-0.12


    Flow

    t/h

    60


    Intlet temperature

    35


    Temperature raise

    8


     

    NOTE 1:

    Users working conditions:

    Scrap steel yield 97%, hot, continuous, light and thin materials must be packaged into briquettes, large material cutting, with the use of pressing manipulator. Except for heat preservation and slag discharge time, based on the actual weighing of molten steel.


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    Tel:18037961302 Sales hot line ( 24 hours service): 18037961302
    E-Mail:firstfurnace@gmail.com
    Adress: Luoxin Industrial Park, Luoyang, Henan