Tig Welding; Choice Of Welding Process (Sector Q) - Cebora 553 Manuel D'instructions

5

TIG WELDING

5.1

Choice of welding process (sector Q)

The processes available are as follows:
MMA Welding with covered electrodes (see section 6)
TIG DC Welding (see section 5.7)
TIG DC APC Welding (Active Power Control), (see section 5.1.1)
This function acts so that when the arc length is shortened, the current increases, and vice versa; the
operator then controls the heat gain and penetration just by moving the welding torch.
The current variation amplitude per unit of voltage is adjustable by means of the APC parameter.
TIG DC XP Welding (eXtra Pulse). Select the ON-XP icon to set a very high frequency pulsed current to
obtain a more concentrated arc. The settings are fi xed and defi ned with this type of pulsed current. The
indicated welding current is the mean value of the pulse and is adjustable from 5 to 135 A.
for Item No 558 only
MMA Welding with covered electrodes (see section 5.6) Suitable for welding magnetised plates. It
avoids magnetic blow when box welding; it is generally used in maintenance work and in all cases in
which high-penetration welding is not required.
for Item No 558 only
TIG AC + DC (MIX) Welding (see section 5.6) To adjust these parameters see section 8.3. This process
makes it possible to alternate AC welding semi-periods with DC welding semi-periods. The DC process
component makes it possible to obtain greater penetration and faster welding with less deformation
of the workpiece.
for Item No 558 only
TIG AC XA Welding (eXtra Amplitude) (see section 5.6). To adjust these parameters see section 8.3.
This process makes it possible to simultaneously adjust the amplitude of the positive (cleaning) and the
negative (penetration) semi-wave. It is suitable for welding thin plate corners when the negative semi-
wave is set on MAXIMUM.
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Select and confi rm sector Q.
Select and confi rm the welding process. N.B. the box for the
process in use is highlighted in green and boxed in red.
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