Mweld WAVE 200DIII, Руководство пользователя, Страница: 15 / 25

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【 】
to adjust the Pulse width
；
【 】
to adjust the Pulse frequency
；
【 】
to adjust the Pulse Background current
；
【 】
to adjust the stopping gas delay time
；
【 】
to adjust the clear area width
；
【 】 to adjust the AC square wave frequency ；
Choose 【 2step,4step switch 】 set on different gears to choose the welding method “2 step ” 、 “four
step ” (See the details introduction is “Technical Instruction”)
2.6 LIFT TIG welding
Set
【
Welding mode knob
】
to “TIG ”, Press the electrode lightly against the work piece (1).
Press the switch and the shielding gas will start to flow and a small current will pass through the
electrode. Lift the electrode away from the work piece by turning it so that gas nozzle rests against the
work piece (2 ja 3), and the arc will ignite and the current will rise to the welding level within the up-slope
time (4).
3. Stick welding skill
3.1 Welding positions
There are two basic positions, for welding: Flat and Horizontal. Flat welding is generally easier, faster,
and allows for better penetration. If possible, the work piece should be positioned so that the bead will
run on a flat surface.
3.2 Preparing the Joint
Before welding, the surface of work piece needs to be free of dirt, rust, scale, oil or paint or it will create
brittle and porous welds. If the base metal pieces to be joined are thick or heavy, it may be necessary to
bevel the edges with a metal grinder, the correct bevel should be around 60 degree. See following
picture: