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AC DC pulse tig welder welding machine MASTERTIG-250AC

AC DC pulse tig welder welding machine MASTERTIG-250AC
AC DC pulse tig welder welding machine MASTERTIG-250ACAC DC pulse tig welder welding machine MASTERTIG-250ACAC DC pulse tig welder welding machine MASTERTIG-250ACAC DC pulse tig welder welding machine MASTERTIG-250ACAC DC pulse tig welder welding machine MASTERTIG-250AC

AC DC pulse tig welder welding machine MASTERTIG-250AC

AC DC pulse tig welder welding machine MASTERTIG-250AC
CategoriesTIG Welders
Rated Input Voltage1PH ~ 230V ±15%
Rated Output250A/20V
Max Open Circuit Voltage7.81KVA
Open Circuit Voltage70V~80V
Power Factor0.8
Warranty1 year warranty
FOB portShanghai/Ningbo
Terms of PaymentL/C, D/A, D/P, Western Union, MoneyGram, T/T, Paypal
Download DOCpdf icondoc iconxls iconrar icon
Update TimeApr 17,2024
Detail Information

    The total solution of TIG welding

    • Application:

      Metal Fabrication
      Maintenance and Repair
      Auto Body
      Light Industrial
    • Processes:

      DC TIG (GTAW)
      AC TIG (GTAW)
      MIX TIG (GTAW)
      Stick (SMAW)
    • Input Power: 200-240V, 1-Phase 

      Amperage Range: 5-250A
      Rated Output at 40℃ (104℉):
      250A at 20V @60% Duty Cycle
      Weight: 23kg



    Conventional Pulsed TIG

    Typically from 0.2 to 10 PPS. Provides a heating and cooling effect on the weld puddle and can reduce distortion by lowering the average amperage. This heating and cooling effect also produces a distinct ripple pattern in the weld bead. The relationship between pulse frequency and travel speed determines the distance between the ripples. Slow pulsing can also be coordinated with filler metal addition and can increase overall control of the weld puddle.

    High Speed Pulsed TIG

    In excess of 40 PPS, Pulsed TIG becomes more audible than visible—causing increased puddle agitation for a better as-welded microstructure. Pulsing the weld current at high speeds — between a high Peak and a low Background amperage — can also constrict and focus the arc. This results in maximum arc stability, increased penetration and increased travel speeds.

    AC waveshape

    Standard Square Wave

    The Standard Square Wave offers fast transitions between EN and EP for a responsive, dynamic, and focused arc with better directional control. It forms a fast-freezing puddle with deep penetration and fast travel speeds.

    Sine Wave

    The Sine Wave a soft arc with the feel of a conventional power source. It provides good wetting action and actually sounds quieter than other waves. Its fast transition through the zero amperage point also eliminates the need for continuous high frequency.


    Features of MIX TIG:

    The AC current can get a very good clearance, and DC current can get a deeper penetration.
    Use the MIX TIG we can get an excellent Arc Concentration,

    can be carried out the excellent welding performance from thin to thick plate.

    1) Nice weld appearance, deep penetration.

    2) Excellet Arc Concentration..

    3) Substantially reduce the electrode consumption.

    MIX TIG Frequency (Hz):

    the cycle time of MIX

    TIG in 1 second. Adjustable range: 0.1-10Hz.

    MIX TIG Balance (DC) %:

    DC Balance (%) = (tad/Tmix) x 100

    AC Waveshape Controls

    Frequency control

    Controls the width of the Controls the width of the arc cone.

    Increasing the AC Frequency provides a more focused arc with increased directional control.

    Note: Decreasing the AC Frequency softens the arc and broadens the weld puddle for a wider weld bead.

    AC Balance Control

    Controls arc cleaning action. Adjusting the % EN of the AC wave controls the width of the etching zone surrounding the weld.

    Note: Set the AC Balance control for adequate arc cleaning action at the sides and in front of the weld puddle. AC Balance should be fine tuned according to how heavy or thick the oxides are.

    Amplitude Control

    Adjusts the ratio of EN to EP amperage to precisely control heat input to the work and the electrode.

    EN amperage controls the level of penetration, while EP amperage dramatically effects the arc cleaning action along with the AC Balance control.


    Item No MASTIER TIG-250AC
    Rated Input Voltage 1PH ~ 230V ±15%
    Max. Load Power Capacity TIG: 7.81KVA
      MMA: 8.75KVA
    Rated Duty Cycle(40oC) 60% TIG: 250A/20V
      MMA: 200A/28V
    100% TIG: 200A/18V
      MMA: 160A/26.4V
    Welding Current/Voltage Range TIG: 5A/10.2V~250A/20V
    Open Circuit Voltage 70V~80V
    Power Factor 0.8
    Efficiency 80%
    TIG Pulse Peak Current 5A~250A
    Base Current 5A~250A
    Pulse Frequency 0.2Hz~200Hz
    Pulse Width (Ratio) 1~100%
    AC TIG AC Frequency Range 20Hz~250Hz
    AC Clean Width (AC Balance) +40~-40
    AC Clean Ratio (AC Bias) % +30~-50
    MIX TIG MIX Frequency: 0.1Hz~5Hz
    DC Balance: (%) 20-80
    Arc-starting Current 5A~250A
    Crater-filling Current 5A~250A
    Current Up-slope Time 0.1S~15S
    Current Down-slop Time 0.1~15S
    Pre-Gas Time 0.1S~15S
    Flow-Gas Time 0.1S~15S
    Spot Arc Time 0.1S~10S
    MMA Arc Force 10A~200A
    Hot Start Time 0.1-3S
    Hot Start Current 10A-200A
    Dimension (LxWxH) 490X230X385mm
    Weight (KG) 23KG

    Water-cooling Unit: WC-100

    Operating Voltage 230V 50/60Hz
    Rated Power 260W
    Cooling Power 1.5KW(1L/MIN)
    Maximum Pressure 0.3MPA/60HZ
    Recommended Cooling Liquid 20%~40% ethanol/water
    Tank Volume 6.5L
  • For Standard accessories



    TIG torch:TIG-26



    Electrode holder with cable 2M
    Earth clamp with cable 2M

    For Optional accessories






    Argon gas regular






    Foot Pedal



    Water-cooling unit: WC-100

  • Q:Are you a factory or a trading company?

    A: We are factory with more than 10 years manufacturing experience and we provide perfect OEM and after-sale service.

    Q:How can I pay my order?

    A: We accept T/T, Western Union, Alibaba Trade Assurance payments. For those orders less than 1000USD, we accept PayPal to pay.

    Q:How about your warranty?

    A: We offer 3-year product life guarantee ,and a generous 1 year warranty on al purchases that begins with the bill of lading.

    Q: Do you have a CE certificate?

    A: For every model of machine, it has a CE certificate.

    Q:How can I get the quotation?

    A: We usually quote within 24 hours after we get your inquiry. If you are urgent to get the price,please send the message on trade management or call us directly

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