GWH4 datasheet(3/48 Pages) CLARKE

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PRINCIPLES OF THE MACHINE

The MIG270 Multi is an inverter type welding machine, suitable to carry out Gas and

No Gas CO2 welding, MMA, TIG and MIG. The welder is mainly used for CO2 gas

protected welding which has the advantages of high energy efficiency, strong arc

penetration and small welding deformation.

Weldable materials include low carbon steel, low alloy steel, high strength steel,

stainless steel and aluminium alloy. Methods include full position spot welding, butt

welding, fillet welding and lap welding. The stable welding process can be obtained

by using pure CO2, CO2+Ar, CO2+ O2 and other protective gases. The torch is suitable

for wire diameters of 0.8-1.0mm.

Manual Metal Arc (MMA) welding uses a coated, consumable electrode to lay the

weld. The arc melts the core of the electrode to produce drops of molten metal (weld

pool) to create the welded joint. Because of the versatility and simplicity of MMA

welding, it requires less skill and is used primarily to weld iron and steel (including

stainless steel). but nickel and copper can also be welded using this method.

MIG (Metal Inert Gas) welding allows you to fuse together two similar metals

without altering their properties. A consumable wire electrode is continuously fed

through the welding torch fitted with a concentric gas nozzle. the wire is connected to

a high voltage supply which creates an electric arc between the electrode (the wire)

and the workpiece. The arc is used to create the required heat to turn the metal into

a molten state. The wire is used as both the electrode and as a filler.

The gas is used to prevent oxidation and to shield the arc and the weld from

atmospheric contamination. The choice of gas is dependent upon the material being

welded. This machine is designed to be used for both metal ARC (MMA) and TIG

welding.

TECHNICAL FEATURES

This welder adopts IGBT (insulated gate bi-polar transistor) soft switch inverter

technology. The single-phase power input, after rectifying, will be converted to 20KHz

high frequency AC by IGBT, then the voltage drops after HF transformer, second

rectification and filtering to be a welding suitable DC. Through this process, the

dynamic response speed of the welded power supply is improved and makes it more

compact. The control circuit controls the whole machine so that the welding power

supply has good anti-grid fluctuation ability and excellent welding performance.

• The MIG270DV Multi is equipped with high-speed ARM platform, adopting a

unique fine waveform control method with low spatter and an elegant weld bead.

• The MIG270DV Multi gives a freely adjustable arc shape with the “Arc Control”

knob, and can freely set the inductance of the arc.

• The unique arc starting and burn back control technology greatly improve the arc

starting success rate and achieves high-quality fast spot welding.

GWH4 Datasheet(PDF) 3 Page - Clarke International