REHM FOCUS.ARC P 250, Руководство по эксплуатации

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Function description
31
5.2.7 2 cycle interval
Interval welding is defined as spot welding with defined pause times. This makes
it
possible to apply the thinnest filler materials.
Interval welding is only possible in the 2 cycle operating mode.
Welding in the interval welding mode is recommended for welding with a fixed
break welding time from 0.01 seconds.
In interval mode the pause time between the single intervals can be adjusted and
the cooling of the base material guaranteed, which means less warpage.
2 cycle interval operating mode procedure:

1. cycle Operate the torch trigger

The inert gas solenoid valve opens

After the set gas pre-flow time has expired the power unit is switched on

Welding voltage on

Wire feed runs at the initial wire feed speed

Arc is ignited after the welding wire contacts the workpiece

The feed switches to the set wire feed speed of the welding process

The welding current flow is at the set value set for welding

The welding time is running

The welding process is automatically terminated after the set welding
time has expired

Wire feed stops

Freeband and freeband control are executed

The inert gas continues to flow

The pause time is running

After the pause time has expired, the welding process is restarted and
the previously described procedure is repeated.

2. cycle Release the torch trigger

Wire feed stops

Freeband and freeband control are executed

The inert gas is switched off after the gas post-flow time has expired
Figure 18: 2 cycle interval operating mode procedure
t (s)
Current
[A]
Welding
current
Gas post-
flow time
Gas pre-
flow time
1.
2.
Welding
time