Wilkinson Star Jasic JT-500D, Руководство оператора

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16
OPERATION
Before starting any welding activity ensure that you have suitable eye protection and
protective clothing. Also take the necessary steps to protect any persons within the welding
area.
MMA welding mode
MMA (Manual Metal Arc), SMAW (Shielded Metal
Arc Welding) or just Stick Welding.
Stick welding is an arc welding process which melts
and joins metals by heating them with an arc
between a covered metal electrode and the work.
Shielding is obtained from the electrode outer
coating, often called flux. Filler metal is primarily
obtained from the electrode core.
The electrodes outer coating called flux assists in
creating the arc and provides a shielding gas and
on cooling forms a slag covering to protect the weld
from contamination.
When the electrode is moved along the work piece at the correct
speed the metal core deposits a uniformed layer called the weld
bead.
After connecting the welding leads as detailed you will need to
switch the power switch on the back panel to “ON”.
Select MMA mode by switching to the welding mode selection key
to either DC or AC depending on your welding application (see
page 10). There is now open circuit voltage output at both output
terminals.
Ensure you check that you have the electrode polarity correct and
set the amperage on the machine suitable for the electrode being
used.
Please see the guide to amperages required below, although this
MMA welding electrode guide can vary depending on material,
work piece thickness, welding position and joint form.
Electrode Diameter (mm) Recommended Welding Current (A)
1.6 25 ~ 45
2.0 35 ~ 65
2.5 50 ~ 90
3.2 60 ~ 130
4.0 100 ~ 180
5.0 150 ~ 250
6.0 200 ~ 310