Stick Welding; Constant Current (Cc-Stick) Welding; Pipe Welding - Lincoln Electric RANGER 305 D Service Manual

RANGER 305D
BRE K-IN PERIOD
Any engine will use a small amount of oil during its "break-in" period.
For the diesel engine on the Ranger 305D, break-in is about 50
running hours.
Check the oil every four hours during break-in, and change both oil
and oil filter at 50 hours of operation. Change the oil every 75 hours
thereafter and the oil filter every 150 hours. For more details, see the
Maintenance section of this manual.
During break-in, subject the Ranger 305D to moderate loads. Avoid
long periods running at idle. Before stopping the engine, remove all
loads and allow the engine to cool several minutes.
TABLE B.2 - TYPICAL CURRENT RANGES
TUNGSTEN DCEN (-)
ELECTRODE
DIAMETER IN. (MM)
1%, 2% THORIATED
TUNGSTEN
0.010 (.25) 2-15
0.020 (.50) 5-20
0.040 (1.0) 15-80
1/16 (1.6) 70-150
3/32 (2.4) 150-250
1/8 (3.2) 250-400
5/32 (4.0) 400-500
3/16 (4.8) 500-750
1/4 (6.4) 750-1000
1 When used with argon gas. The current ranges shown must be reduced when using argon/helium or pure helium shielding gases.
2 Tungsten electrodes are classified as follows by the American Welding Society (AWS):
Pure
1% Thoriated
2% Thoriated
Though not yet recognized by the AWS, Ceriated Tungsten is now widely accepted as a substitute for 2% Thoriated Tungsten in AC and DC applications.
3 DCEP is not commonly used in these sizes.
4 TIG torch nozzle "sizes" are in multiples of 1/16ths of an inch:
# 4 = 1/4 in. (6 mm)
# 5 = 5/16 in. (8 mm)
# 6 = 3/8 in. (10 mm)
# 7 = 7/16 in. (11 mm)
# 8 = 1/2 in. (12.5 mm)
#10 = 5/8 in. (16 mm)
5 TIG torch nozzles are typically made from alumina ceramic. Special applications may require lava nozzles, which are less prone to breakage, but cannot withstand high temperatures
and high duty cycles.

STICK WELDING

The Ranger 305D can be used with a broad range of DC stick
electrodes.
The MODE switch provides two stick welding settings as follows:

Constant Current (CC-STICK) Welding

The CC-STICK position of the MODE switch is designed for horizontal
and vertical-up welding with all types of electrodes, especially low
hydrogen. The OUTPUT control dial adjusts the full output range for
stick welding.
The ARC CONTROL dial sets the short circuit current (arc-force) during
stick welding to adjust for a soft or crisp arc. Increasing the number
from -10(soft) to +10(crisp) increases the short circuit current and
prevents sticking of the electrode to the plate while welding. This can
also increase spatter. It is recommended that the ARC CONTROL be
set to the minimum number without electrode sticking. Start with the
dial set at 0.
DOWNHILL PIPE Welding
This slope controlled setting is intended for "out-of-position" and
"down hill" pipe welding where the operator would like to control the
current level by changing the arc length. The output CONTROL dial
adjusts the full output range for pipe welding. The ARC CONTROL dial
sets the short circuit current (arc-force) during stick welding to adjust
for a soft or more forceful digging arc (crisp). Increasing the number
from -10(soft) to +10(crisp) increases the short circuit current which
results in a more forceful digging arc.Typically a forceful digging arc
is preferred for root and hot passes. A softer arc is preferred for fill
and cap passes where weld puddle control and deposition ("stacking"
of iron) are key to fast travel speeds.
DCEP (+)
1%, 2% THORIATED
TUNGSTEN
- 3-8 (2-4)
- 5-10 (3-5)
- 5-10 (3-5)
10-20 5-10
15-30 13-17
25-40 15-23
40-55 21-25
55-80 23-27
180-125 28-32
EWP
EWTh-1
EWTh-2
B 7
1 FOR TUNGSTEN ELECTRODES
APPROXIMATE ARGON GAS FLOW
FLOW RATE C.F.H (1/MIN.)
ALUMINUM STAINLESS STEEL
3-8 (2-4) #4, #5, #6
5-10 (3-5)
5-10 (3-5)
(3-5) 9-13 (4-6)
(6-8) 11-15 (5-7)
(7-11) 11-15 (5-7)
(10-12) 13-17 (6-8)
(11-13) 18-22 (8-10)
(13-15) 23-27 (11-13)
OPERATION
2
TIG TORCH
NOZZLE SIZE
4,5
#5, #6
#6, #7, #8
#8, #10