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

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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