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mma welding machine,
arc zx7 welding machine,
IGBT MMA welding amchine
price portable arc automatic welding machine
MMA250 Portable cheap price electric arc automatic welding machine
Model:MMA120/158/168/160/200/250/300/320 IGBT/400 IGBT/500 IGBT
Arc Welder Technical Features:
|Model / Item||MMA250--arc welding machine|
|Supply Voltage ( V )||AC380V±10% 3ph 50/60Hz|
|Rated Intput Capacity ( KVA )||9.4|
|Rated Output Voltage ( V )||30|
|Output Current Adjustment Range ( A )||20-250|
|No-load Voltage ( V )||56|
|No-load Loss ( W )||40|
|Duty cycle ( % )||100% at 200A / 60% at 250A|
|Efficiency ( % )||85|
|Outer covering protection rank||IP21S|
|Outlook size ( mm )||480*205*305|
|Weight ( kg )||15|
|Suitable Welding Wire ( mm )||2.0-4.0|
|Welding Thickness ( mm )||2.0-5.0|
3M Welding 300A Torch , 2M Earth 300A clamp(these standard parts are optional,if you do not need,we can subtract the relative part's fee from the whole set price.)
1.with1 yearwarranty for this welding machine.
2.The average of our welding machine lasts betweensevenandeightyears.If there were problems in seven days,we replace the new one for you.
MMA Welding Details:
MMA welding (metal arc) does not require shielding gas; protection for the weld pool comes from the electrode cover which melts during welding, and forms a protective layer of slag on the weld pool. When the welding is completed and the layer of slag is removed, the finished weld will be disvocered underneath.
MMA welding is the oldest and still the most commonly used arc welding process, although the proportion of MMA use is decreasing as gas-shiedled welding process is becoming more popular.
MMA welding is, however, an irreplacable method for instace when welding outside in windy conditions where using shiedling gas would be difficult. Another important benefit is that electrodes can be bought everywhere, also in small package.