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

E-Mail: firstfurnace@gmail.com

whatsapp:+8618037961302

Adress: Luoxin Industrial Park, Luoyang, Henan
  • Products
  • Medium Frequency Furnace

    One Belt Two Intermediate Freq

    series intermediate frequency

    Steel Shell Intermediate Frequ

    3T Parallel Intermediate Frequ

    Aluminum Shell Medium Frequenc

    Steel pipe medium frequency qu

    Round steel medium frequency f

    Surface quenching and single t

    Drill pipe medium frequency co

    Medium frequency forging furna

    25 80 round steel induction

    70100 round steel induction

    KGPS300KW/1.5 round steel medi

    50 100 round steel heating f

    Metal casting furnace

    Copper casting furnace

    Gold melting furnace

    Silver melting furnace

    50kg metal powder atomization

    50KG medium frequency copper m

    800 KG electromagnetic copper

    Medium frequency copper meltin

    Scrap copper melting furnace

    300kg copper melting furnace

    Medium frequency aluminum melt

    Electromagnetic induction alum

    250kg medium frequency inducti

    Electric furnace principle
        

    1. Close the working power of the inverter cabinet and check the regulated power supply (using a multimeter)

    Whether +15V, -15V, +24V, +30V, +130V meet the requirements.

    Check whether the GND ground wire in each inverter cabinet is connected.

    Check if the working power of the inverter pulse transformer is normal.

    Check whether the inverter stop light (red) is on, according to the inverter work, whether the inverter work light (green) is on, press reset, whether the inverter work light (green) is off, and whether the inverter stop light (red) is on. Press the inverter to work, the green light is on, press the inverter to stop, the red light is on. Repeat the operation several times.

    The green and red lights are off, and if the button is not working, check the load distribution board for any problems and the connection to the inverter board.

    2. The switch on the inverter main board is in the inspection file, and the frequency is displayed according to the inverter. Detect the KK tube trigger pulse with an oscilloscope. (with oscilloscope DC file)


    When detecting the inverter pulse, each pulse should check its negative bias. The method is: after the pulse is detected, the oscilloscope level is turned to GND, and the pulse below the pulse is 0.3V under the GND.

    If there is no negative bias, check the 380V/10V, 10V, 10V, 10V power transformer.

    3, the correction frequency (frequency table display and inspection frequency are consistent)

    Check the frequency potentiometer W110 and adjust the frequency at 300HZ (detected with an oscilloscope)

    Correct the frequency potentiometer W201, adjust the potentiometer to make the frequency meter display 300HZ

    4. Test machine: (Requirement: The inverter main board is in the working file. The furnace is placed inside the furnace, and the internal and external water systems are turned on)

    Close the knife switch and press the energy storage, closing, and rectification work buttons.

    DC voltage rises to full voltage (DC voltage = incoming voltage 1.35 2)

    Use the oscilloscope probe to detect the current waveform on the inverter current transformer 5A/0.1A.

    The oscilloscope detected the waveform as follows

    If the power potentiometer is adjusted and the current waveform cannot be moved, the two current signal lines from the inverter main circuit are exchanged.

    After the input current signal line is correct, adjust the power potentiometer to the zero position, and adjust the lower limit potentiometer W162 in the critical state (the second waveform above).



    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