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OM-949 Page 19
SECTION 7 − WELDING METHODS & TROUBLESHOOTING
mod5.1* 9/92
A. Welding Methods
7-1. Shielded Metal Arc Welding (SMAW) Procedure
ST-151 593
1 Workpiece
Make sure workpiece is clean before welding.
2 Work Clamp
Place as close to the weld as possible.
3 Electrode
A small diameter electrode requires less current than a large one.
Follow recommendations of electrode manufacturer when setting
weld amperage (see 7-2).
4 Insulated Electrode Holder
5 Electrode Holder Position
6 Arc Length
Arc length is the distance from the electrode to the workpiece. A
short arc with correct amperage will give a sharp, crackling sound.
Y Welding current starts as soon as electrode touches the
workpiece.
7 Slag
Use a chipping hammer and wire brush to remove slag. Remove
slag and check weld bead before making another weld pass.
1
4
3
5
2
7
6
Tools Needed: