Page 168 - CITS - Welder - Trade Practical

WELDER - CITS

Fig 2 Fig 3

Place the electrode in the holder as in Fig 6. Use a 90degree angle or a 45degree angle away from the end of
the holder.
Position yourself so that you are at a 90degree angle to the pipe. Be sure you are comfortable.
Strike the arc, on the bevel, at approximately 3 o’clock. Carry it down to 4 o’clock Pause long enough for the root
faces to melt away and for a keyhole to form Fig 5. Then reverse your electrode direction.

Fig 4 Fig 5

To run the first pass uphill, utilize the whipping method, as in welding plate in the vertical position. Use an electrode
at a push angle of 5 to 15 degrees upward, as in Fig 6. Whip upward, taking care not to damage the surface of the
pipe on either side of the V groove. Stop when you reach 1 o’clock, as shown in Fig 6. Clean thoroughly

Fig 6

Turn the pipe toward you one quarter of a tum. Then proceed in the same manner until the first pass is completed.
Be sure to start the next electrode slightly below the crater.

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CITS : C G & M - Welder - Exercise 36 CITS : C G & M - Welder - Exercise 36