Specification

Andersen Easy Weld #1

BROCO Sof-Touch

Electrodes

Electrode

Waterproofing

Materials

Carbon Steel (E7014)

Carbon Steel (E7014)

E6013 E7014

Epoxy 1521 Sea Lac 30-L2093

MIL SPEC P-24441

Non-petroleum-based, clear, polyurethane

1. Commercially available

2-5.5 Drag Technique. Steel plate can be cut simply by dragging the electrode along the desired line of cut. The drag technique can be used to cut 1/4-inch steel plates with 300 amperes of current. 3/8-inch plate requires using 400 amperes of current. This technique works more effectively using larger electrodes and higher currents. The diver may find that using the drag technique in a flat position is more effective than in other positions.

When cutting thicker plates, a slow, short-stroke, sawing motion must be used to push the molten metal out of the far side of the cut. This technique is illustrated in Figure 2-10.

Skillful application of this sawing technique makes the metal-arc cutting process practical over a wide range of thicknesses. When cutting non-ferrous metal round stock, a sawing motion should be used, starting at the bottom and pushing through.

2-6 CONCLUSION

This chapter has presented two methods of underwater cutting. Attention to safety procedures contained within this chapter and in Appendix D must be observed and carefully followed.

Figure 2-10. Technique for Underwater Shielded Metal-Arc Cutting of Thick Plate and Round Stock.

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