Whip and Pause Technique The whip and pause technique is an important skill to learn. This technique is used with E6010 and E6011 electrodes. It is also used with similar electrodes of higher strength, such as E7010, E8010, etc. Electrode designations ending in 10 or 11, EXX10 or EXX11, are known as fast-freeze electrodes. Fast-freeze electrodes are used at a lower welding current and have a thinner slag covering both allow the weld pool to solidify faster than other electrode types. This technique is frequently used when welding a butt weld and especially when welding a butt joint out of position. It can also be used for welding a fi llet weld. The technique can be used with E6010 or E6011 electrodes on all joints. It is also used with higher- strength EXX10 and EXX11 electrodes. It is not used with any other electrode types. The whip and pause technique used on a root pass of a butt weld involves moving the electrode forward a distance equal to about one electrode Exercise 12-3 V-Groove Butt Joint in the Flat Welding Position 1. Obtain four 1/8″ (3.2 mm) diameter E6010 electrodes and four 1/8″ (3.2 mm) diameter E6011 electrodes. Determine the correct current and polarity for each electrode. 2. Also obtain two pieces of carbon steel measuring 3/8″ × 3″ × 6″ (9.5 mm × 75 mm × 150 mm). 3. Flame cut or grind a 45° bevel on the 6″ (150 mm) edge of each piece. 4. Form a V-groove butt joint with a 1/16″–3/32″ (1.6 mm–2.4 mm) root opening. Tack-weld the pieces in three places. 5. Run the root pass using the keyhole method. This ensures 100% penetration. 6. Clean the root pass and run additional weld passes to complete the weld. 7. Repeat steps 3–6 using an E6011 electrode. Inspection: The completed weld must have 100% penetration visible on the reverse side. The face of the weld bead must be properly shaped. The bead ripples must be evenly spaced. No undercut should be visible. Goodheart-Willcox Publisher Figure 12-22. The whip and pause technique is used with high-cellulose electrodes, like E6010 and E6011. Move the electrode forward one electrode diameter and then backward one-half electrode diameter. This produces good penetration and a uniform ripple. Goodheart-Willcox Publisher Figure 12-21. Notice the groove preparation on this double-bevel-groove butt joint. The weld on top was made first, and then the weld on the bottom was made. Notice how the second weld bead penetrates into the root of the first weld bead. Penetration Weld face Toe of weld Weld face 1) 2) 2) 1) 1) 1) Move forward one electrode diameter 2) Move backward one-half electrode diameter 180 Section 2 Shielded Metal Arc Welding Copyright Goodheart-Willcox Co., Inc.