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  • 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 principle（原理）
    How to choose the current frequency when the induction heating furnace heats the billet?
        

    How to choose the current frequency when the induction heating furnace heats the billet?

    The selection of the current frequency when the induction heating furnace heats the billet is shown in the table

    Selection of current frequency when steel billet is diathermy

     

    Diameter of blank /mm

    Current frequency/Hz

    Below the Curie point

    Higher than the Curie point

    6 -12

    3000

    450000

    12-25

    960

    10000

    25-38

    960

    3000 -10000

    38-50

    60

    3000

    50 -150

    60

    960

    >150

    60

    60

     

     

    It can be seen from the table that when the blank is heated at a temperature below the Curie point, the frequency can be one tenth of the Curie point due to the shallow penetration of the current. If dual-frequency heating is used, such as PC steel bars, before and after the Curie point Using different current frequencies can improve heating efficiency. Recently, a 30Hz frequency conversion power supply has been developed to heat large-diameter billets.

     

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