Page 174 - CITS - Fitter Trade Pactical - Volume - 2

FITTER - CITS

EXERCISE 51 : Straight line beading by arc (Flat
position)

Objectives

At the end of this exercise you shall be able to
• deposit straight beads in a flat position
• clean the weldment and inspect for faults.

Job setting
Set the job in a flat position on the welding table. (Fig 1)

Ensure there is a good electrical contact between the job and the welding table.

Fig 1

Current setting (Fig 2)

Set the current on the welding machine, 140-150 amps for Ø4mm M.S. Electrode.
Always follow the current range chart for the electrodes in use.

Fig 2

Electrode position (Fig 3a&b)
Hold the electrode at an angle of 70° - 80° with the weld line and 90o with the adjoining plate surface.

Fig 3

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