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Presentation of welding processes
For carbon and stainless steels,
SPEEDTEC 320CP
uses 2 types of short arc:
“soft” or “smooth” short arc
The “dynamic” short arc or « SSA ».
PULSED MIG MAY BE USED ON ALL TYPES OF METAL (STEEL, STAINLESS STEEL AND ALUMINIUM) WITH SOLID
WIRES AND SOME CORED WIRES. IT IS PARTICULARLY SUITABLE FOR STAINLESS STEEL AND ALUMINIUM, FOR
WHICH IT IS THE IDEAL PROCESS, ELIMINATING SPATTER AND ACHIEVING EXCELLENT WIRE FUSION.
Characteristics of the power source arc
“Soft”or “Smooth” short arc (SA)
The “soft” short arc achieves
great reduction in spatter
when welding carbon steels, resulting in a very significant reduction
in finishing costs.
It improves the appearance of the weld bead thanks to improved wetting of the molten pool.
The “soft” short arc is suitable for welding in all positions. An increase in wire feed speed enables entering spray arc mode
without preventing transition into globular mode.
Waveform of short arc welding process
Note
: The “soft” short arc is slightly more energetic than the "speed" short arc. Consequently the “speed” short arc may be
preferable to the "soft" short arc for welding very thin sheets (
≤
1 mm) or for welding penetration passes.
“
Dynamic” short arc or “Speed Short Arc” (SSA)
The Speed Short Arc or SSA allows greater versatility in welding carbon and stainless steels and absorbs fluctuations in the
welder’s hand movements, for example when welding in a difficult position. It also helps compensate for differences in the
preparation of the workpieces.
By increasing the wire feed speed,
the SA mode enters seamlessly into SSA mode, while preventing the globular
mode.
Thanks to its quick arc control and using appropriate programming,
SPEEDTEC 320CP
can artificially extend the
Short Arc range to higher currents, in the range of the
speed short arc
.
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