Lincoln Electric C2.410 manual High Speed Welding Sheet Metal, Alternate

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High Speed Welding (Sheet Metal)

Welding sheet steel (18 through12 gauge) requires electrodes that weld at high travel speeds with minimum skips, misses, slag entrapment, and undercut.

Procedures

Groove welds . . . . . . . . . . . . . . . . . . . . . . . . . page 20 Edge Welds . . . . . . . . . . . . . . . . . . . . . . . . . . page 20 Fillet Welds . . . . . . . . . . . . . . . . . . . . . . . . . . page 21 Lap Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . page 21 Corner Welds . . . . . . . . . . . . . . . . . . . . . . . . . page 22 Burnthrough Spot Welds . . . . . . . . . . . . . . . . page 23

Alternate Electrodes

When the recommended electrodes are not available, or if preferred, the following electrodes can be substituted using approximately the same procedures:

Electrode

Class

Alternate

Fleetweld 5P

E6010

E6011

Fleetweld 5P+

E6010

E6011

Fleetweld 35

E6011

E6010

Fleetweld 7

E6012

E6013

Fleetweld 37

E6013

E7014

Welding Techniques

Generally, use the highest current possible that will not burn- through, undercut, or melt the edges of lap, corner, or edge welds. Fast welding depends upon the operators skill at staying on the joint and traveling at a uniform speed. A few days practice may be needed by good welders when first starting sheet metal welding.

For maximum welding speed, minimum distortion and flat welds generally position joints for welding 45° to 75° downhill.

The procedure tables assume tight fit-up and adequate clamping or tacking for fast travel speeds and minimum distortion. Use copper backing whenever possible to decrease burnthrough tendencies. When poor fit-up is encountered:

1.Reduce the current.

2.Increase the drag angle.

3.With E6010 or E6011 electrodes use a quick whip technique with a slight circular motion in the crater to bridge the gap.

4.With E6012 or E6013 electrodes, use a small quick weave technique to bridge the gap.

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Contents Stick Electrode Welding Guide Page Table of Contents Welding Procedures Out-Of-Position Welding Vertical and OverheadVertical Up Techniques for Fillet and Groove Welds Vertical Up Groove Welds Vertical Down WeldsVertical Up Fillet Welds 160 PolarityWeld High-Deposition Welding Jetweld LH-3800 E7028H8Wrong End view Side view Corner Welds Groove Welds Groove Welds First PassJetweld 2 E6027 Amps. AC at 14/Min Deep Groove Welds Joint a Pass E6011T Over E6011 Root PassesFt. of Weld/Hr Lbs. of Elec./Ft. 049 Flat Fillet WeldsPlate Size T 14 ga 12 ga 10 ga No. of Passes Leg Size L 082 117 162 WeldHorizontal Fillet Welds Welding Inclined Plate Downhill Angle deg Polarity Arc Speed In./Min.3 Lbs. of Elec./Ft.180 High Speed Welding Sheet Metal AlternatePage Edge Welds Fillet Welds Lap WeldsCurrent Amps 120 170 Polarity Diameter PositionCurrent Amps 110 155 Polarity 018 028Burnthrough Spot Welds Roof Decking to Beam Roof Beam Flange Roof Deck Thickness 22 ga 20 ga 18 ga 16 gaLow Hydrogen Welding E7018-1Multipass Page Overhead Groove Welds Diameter Current Amps 155 PolarityArc Speed In./Min Ft. of Weld/Hr Lbs. of Elec./Ft. Overhead Fillet Welds Also see Out-of Position Procedures,No. of Pass Leg Size L No. of Passes Leg Size LDiameter Current Amps 230 200 Polarity Horizontal Groove WeldsBack gouge first bead as needed Plate Size T No. of Passes Arc Speed In./Min Ft. of Weld/Hr Lbs. of Elec./Ft. of WeldUse steel backing as on 230 200 PolarityWith E7028 Electrode With E7018 Electrode 275 350132 195 272 409 727 260 335 157 236 320Ft. of Weld/Hr.2 Lbs. of Elec./Ft. 203 335785 Minimum Preheat and Interpass Temperature1 Stick Electrode Typical Operating Procedures Out-of-Position GroupHigh Deposition Group High Speed GroupLow Hydrogen Group Low Hydrogen, Low Alloy Steel GroupFleetweld Fleetweld 35LS Jetweld Shield-Arc 70+ Fleetweld JetweldFleetweld 5P Shield-Arc Fleetweld 5P+ Shield-Arc HYP+Electric Shock can kill Fumes and Gases can be dangerous For Electrically powered Electric and Magnetic Fields Stick C2.410 12/04
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