OTC Welbee P400 II, Owner'S Manual

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Chapter 10 Reference Materials
M
ATERIALS FOR
S
ETTING
W
ELDING
C
ONDITIONS
R
EFERENCE
M
ATERIALS
C
HAPTER
10
10.3 Materials for Setting Welding Conditions
This section provides reference information for setting the welding conditions.
10.3.1 Guide for changing welding conditions
This section gives examples of the problems that can occur due to improper welding conditions.
10.3.2 Samples of welding condition settings
This section provides samples of common welding condition settings.
The values are for reference purpose. Adjust them according to the shape of actual weld zone and position of welding.
10.3.2.1 Example of CO
2
welding conditions
Example of welding conditions of horizontal fillet
Problem Symptom
The wire feeding length is too long.
• The arc length becomes long.
• The bead width becomes wide.
• Shielding becomes poor.
The wire feeding length is too short.
• The arc length becomes short.
• Spatter is generated.
The welding voltage is too high.
• The arc length becomes long.
• The bead width becomes wide.
• Penetration and bead become small.
The welding voltage is too low.
• The wire contacts the base metal and spatter is generated.
• The bead width becomes narrow.
The welding current is too high.
• The bead width becomes wide.
• Penetration and bead become large.
The travel speed is too high.
• The bead width becomes narrow.
• Penetration and bead become small.
Plate thickness
t [in. (mm)]
Leg length
L [in. (mm)]
Wire diameter
[in. (mm) ƕ ]
Current
(A)
Voltage
(V)
Travel speed
[IPM (cm/min)]
CO
2 -
gas flow rate
[CFH (L/min)]
18 ga. (1.2)
3/32 to 1/8
(2.5 to 3.0)
035, .040
(0.9, 1.0)
70 to 100 18 to 19
20 to 24
(50 to 60)
21 to 32
(10 to 15)
16 ga. (1.6)
3/32 to 1/8
(2.5 to 3.0)
.035 to .045
(0.9 to 1.2)
90 to 120 18 to 20
20 to 24
(50 to 60)
21 to 32
(10 to 15)
14 ga. (2.0)
1/8 to 9/64
(3.0 to 3.5)
.035 to .045
(0.9 to 1.2)
100 to 130 19 to 20
20 to 24
(50 to 60)
32 to 42
(15 to 20)
12 ga. (2.3)
1/8 to 9/64
(3.0 to 3.5)
.035 to .045
(0.9 to 1.2)
120 to 140 19 to 21
20 to 24
(50 to 60)
32 to 42
(15 to 20)
1/8 (3.2)
1/8 to 5/32
(3.0 to 4.0)
.035 to .045
(0.9 to 1.2)
130 to 170 19 to 21
18 to 22
(45 to 55)
32 to 42
(15 to 20)
11/64 (4.5)
5/32 to 11/64
(4.0 to 4.5)
.045 (1.2) 190 to 230 22 to 24
18 to 22
(45 to 55)
32 to 42
(15 to 20)
15/64 (6.0)
13/64 to 15/64
(5.0 to 6.0)
.045 (1.2) 250 to 280 26 to 29
16 to 20
(40 to 50)
32 to 42
(15 to 20)
23/64 (9.0)
15/64 to 9/32
(6.0 to 7.0)
.045 (1.2) 280 to 300 29 to 32
14 to 16
(35 to 40)
32 to 42
(15 to 20)