Lincoln Electric C2.410 manual Welding Procedures, Out-Of-Position Welding Vertical and Overhead

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WELDING PROCEDURES

Out-Of-Position Welding (Vertical and Overhead)

When welding out-of-position, the molten metal tends to spill out of the joint. To offset this tendency, an electrode with a fast freezing deposit is needed.

Welding made with out-of-position electrodes is slow, relatively expensive and require a high degree of operator skill. Therefore, whenever possible, work should be positioned for downhand welding using High-Deposition electrodes – see pages 8-15.

Procedures

Vertical Up Groove Welds . . . . . . . . . . . . . . . page 6 Vertical Down Welds . . . . . . . . . . . . . . . . . . . page 6 Vertical Up Fillet Welds . . . . . . . . . . . . . . . . . . page 7 Overhead Fillet Welds . . . . . . . . . . . . . . . . . . page 7

For vertical up and vertical down pipe welding technique, request Lincoln bulletin C2.420, Welding Pressure Pipelines.

Alternate Electrodes

Vertical, overhead, and horizontal groove welds on plate thicker than 1/2” are most economically done with low hydrogen electrodes – see pages 24-34.

Vertical Up vs. Vertical Down

Vertical down is recommended for fastest welding of 18 gauge to 3/16” thick steel. A description of the recommended drag technique along with sheet metal procedures are given in the section High-Speed Welding on pages 18-23.

Vertical up techniques provide deeper penetration and lower overall welding costs on plate over 3/16” thick.

Electrode, Current and Polarity

The vertical up and overhead procedures in this section recommend 3/16” and smaller Fleetweld 5P or 5P+ (E6010) electrode using electrode positive and currents in the lower portion of the electrode’s range. When only AC otuput is available, use Fleetweld 35 or Fleetweld 180 (E6011) electrode at about 10% higher current.

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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 Welds160 Polarity Vertical Up Fillet WeldsWeld High-Deposition Welding Jetweld LH-3800 E7028H8Wrong End view Side view Corner Welds Groove Welds First Pass Groove WeldsJetweld 2 E6027 Amps. AC at 14/Min Deep Groove Welds Joint a Pass E6011T Over E6011 Root PassesFlat Fillet Welds Plate Size T 14 ga 12 ga 10 ga No. of Passes Leg Size LFt. of Weld/Hr Lbs. of Elec./Ft. 049 082 117 162 WeldHorizontal Fillet Welds Welding Inclined Plate Polarity Arc Speed In./Min.3 Lbs. of Elec./Ft. Downhill Angle deg180 High Speed Welding Sheet Metal AlternatePage Edge Welds Fillet Welds Lap WeldsDiameter Position Current Amps 110 155 PolarityCurrent Amps 120 170 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 PolarityOverhead Fillet Welds Also see Out-of Position Procedures, No. of Pass Leg Size LArc Speed In./Min Ft. of Weld/Hr Lbs. of Elec./Ft. No. of Passes Leg Size LHorizontal Groove Welds Back gouge first bead as needed Plate Size T No. of PassesDiameter Current Amps 230 200 Polarity Arc Speed In./Min Ft. of Weld/Hr Lbs. of Elec./Ft. of WeldUse steel backing as on 230 200 PolarityWith E7028 Electrode 275 350 With E7018 Electrode132 195 272 409 727 260 335 157 236 320203 335 Ft. of Weld/Hr.2 Lbs. of Elec./Ft.785 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 Jetweld Fleetweld 5P Shield-Arc Fleetweld 5P+Fleetweld Fleetweld 35LS Jetweld Shield-Arc 70+ 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