Paton VDI 160 PRO, Руководство пользователя

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15 | P a g e
PATON
®
VDI PROFESSIONAL SERIES DC MMA/TIG/MIG/MAG
ATTENTION!
Use a gated welding torch with a 9 mm (VDI 160P) or 13
mm (VDI 200P and VDI 250P) bayonet connector. Select the maximum
current of the welding torch according to the specifications.
ATTENTION!
Do not sharpen the electrode tip to a needle-like shape, as
such a shape can cause deviation of a welding arc from side to side. The
properly sharpened electrode tip should have a slightly blunted end with a
diameter corresponding to the specified welding current. In welding with a
large welding current, the high-sharpened electrode easily melts due to
insufficient heat dissipation. The sharpening marks should be arranged
along the electrode centerline.
4.2. OPERATIONAL CYCLE OF THE WELDING PROCESS TIG – LIFT
The procedure for changing the values of the operational parameters of the welding unit is described
in Section 6.1
.
4.3. TIG-LIFT CONTACT ARC-STARTING FUNCTION
This function is set by default and is designed for welding torches with contact arc starting, without
using oscillators and other like devices. In contrast to conventional methods of arc starting, the
contact arc starting prevents the formation of current surge at the instant of time of arc starting. As a
result, disintegration of the no consumable tungsten electrode and ingress of the electrode particles
into the weld can be prevented.
When this function has been activated, contact the electrode with the workpiece. It is allowed to
hold the electrode in this position for an unlimited length of time. When the operator is ready to
welding (for example, when the operator has lowered the protective shield and purged the weld area
with gas), it is necessary to lift the electrode tip slowly from the workpiece. The welding unit will
sense this action as a signal to start welding, and the welding current will be linearly increased to
the set value. To prevent surface melting of the electrode tip, the rate of lifting the electrode should
correspond to the set welding current value. The period
[TIME UP ARC]
of linear current rise is
discussed in Section 4.4.
t, s