Torch; Welding Basics; Stick Electrode Welding - LORCH BasicPlus T-Serie Bedienungshandbuch

14.7

Torch

Fig. 9: Powermaster-torch of the i-LTG/i-LTW-series.
Torch switch functions
77
75 76 78
Fig. 10: Torch switches
15

Welding basics

15.1

Stick electrode welding

Coated stick electrodes are used for the widely-used manual
metal arc welding process (stick electrode welding). The coat-
ing of the electrode melts off during the welding process to-
gether with the core wire. The coating generates the shielding
gas. Additionally the burning-off coating compensates alloy
elements, which are destroyed in the molten pool. A slag layer
forms on top of the welding seam, which covers and protects
the cooling welding seam against the air.
The coatings of the electrodes differ according to thickness
and type, i.e. chemical composition. This results in different
welding properties and consequently different applications
for the electrodes. Types and nomenclature are defined in DIN
EN 499 (formerly 1913).
- 42 -
81 83
80 82 84 85
75
Torch switch Start/Stop
for starting and stopping the welding process.
76
Torch switch second current
for calling up the second current I2.
(For additional functions see "2. torch button" in Chap-
ter „14.3 Secondary parameters" on page 39)
77
Torch switch up
to increase the parameter values.
78
Torch switch down
to decrease the parameter values.
80
LED ampere:
is lit if the welding current is readable in the display
(84).
81
LED Job:
Not available at BasicPlus!
82
Powermaster LED 3:
Free selectable parameters can be saved here. Initial
parameter is "second current I2".
83
Powermaster LED 4:
Free selectable parameters can be saved here.
84
Display: shows parameter values.
85
Mode button:
switch between the parametes LED 80 to LED 83.
Press 7 seconds to change the display (84) to right or
left hand mode. Index is a dot at the bottom right.
Press 2 seconds to unlock the mode-button for 15
seconds (with activated sub-parameter "Powermaster
LED lock" (PLL)).
Base metal
909.2669.9-02
Welding basics
Stick electrode
Coating
Core rod
Gas/slag
Arc
Molten zone
01.21