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    EXPANDING MACHIEN
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    Pipe end expanding machine

    Pipe end expanding machine

    Mechanical parameters

    Mid-Frequency lnduction Pipe Expanding Machine

    processing range

    3”—12”

    8”—24”

    16”—30”

    20”—36”

    30”—48”

    Pipe thickness

    Sch80

    Max.pressure

    31.5MPa

    Working pressure

    25 MPa

    Working speed

    0—1000mm/min

    Return speed

    1500—2000mm/min

    Cylinder Diameter

    180*2

    250mm*2

    360mm*2

    320mm*4

    360mm*4

    Cylinder stroke

    6500mm

    6500mm

    6500mm

    6500mm

    6500mm

    Cylinder thrust

    60T*2

    120T*2

    250T*2

    200T*2

    250T*4

    Motor power

    22.5kw

    46kw

    48.5kw

    75kw

    100kw

    IF power supply required

    250kwa

    400kwa

    600kwa

    800kwa

    1000kwa

     

     

     

     

     

    Mechanical video

    Equipment details

    In the tube end expanding machine can produce the biggest steel pipe for 426 ~ 529 mm in diameter, and in the large cycle pipe rolling unit could obtain Φ below 660 mm seamless steel tube, so to get a larger diameter without rough steel tube must adopt the method of hole enlargement. At present, the main diameter expander used in various countries is hot - dial and cross - rolling. In west Germany, the United Kingdom, the Czech republic, Sweden and the United States and other countries have diagonal expansion machine, in France, the United States, the United Kingdom, Italy and venezuela and other countries have hot drawing expansion machine. The equipment of diagonal rolling reaming machine is complicated, and the tube which is enlarged is easy to produce spiral strip, and the surface quality is poor. Therefore, although its productivity is relatively high, most countries still use hot dial reamer, because hot draw mechanism is simple to build, easy to operate.
     
    Dalmine factory in Italy to install cycle mill of 100 tons of pulling force of hot expanding machine Φ 420 mm steel pipe can be expanded to 720 ~ 950 mm. After expanding, the wire tube heating well was dialed on the hot drawing machine to enlarge its diameter. Heating can be four times, each time expanding 50~60 mm, so heating can expand the diameter of 230 mm. Limited by the heating capacity and the speed of the hot drawing machine, the drawing speed is about 5 m/min, and the production capacity is 8~10 roots per hour.
     
    The thyristor, induction heating coil, compensation capacitor, water cable, reactor and other parts of medium frequency power supply of tube end expanding machine all need circulating water cooling.