The correct choice of electrode size involves consideration of a variety of factors, such as the type, position, and preparation of the joint, the ability of the electrode to carry high current values without injury to the weld metal or loss of deposition efficiency,
2) CORRECT CURRENT.
If current on equipment is too high or too low, you are certain to be disappointed in your weld. If too high, the electrode melts too fast and your molten pool is large and irregular.
3) CORRECT ARC LENGTH or VOLTAGE.
If the arc is too long or voltage too high the metal melts off the electrode in large globules which wobble from side to side as the arc wavers, giving a wide, spattered and irregular bead-with poor fusion between original metal and deposited metal. If arc is too short, or voltage too low
4) CORRECT TRAVEL SPEED.
When your speed is too fast your pool does not last long enough, impurities and gas are locked in. the bead is narrow and ripples pointed. When speed is too slow the metal piles up, the bead is high and wide, with a rather straight ripple.
5) CORRECT ELECTRODE ANGLE.
The electrode angle is of particular importance in fillet welding and deep groove welding. Generally speaking, when making a fillet weld, the electrode should be held so that it bisects the angle between the plates and is perpendicular to the line of weld.
Explanation:
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Answer:
1) CORRECT ELECTRODE SIZE.
The correct choice of electrode size involves consideration of a variety of factors, such as the type, position, and preparation of the joint, the ability of the electrode to carry high current values without injury to the weld metal or loss of deposition efficiency,
2) CORRECT CURRENT.
If current on equipment is too high or too low, you are certain to be disappointed in your weld. If too high, the electrode melts too fast and your molten pool is large and irregular.
3) CORRECT ARC LENGTH or VOLTAGE.
If the arc is too long or voltage too high the metal melts off the electrode in large globules which wobble from side to side as the arc wavers, giving a wide, spattered and irregular bead-with poor fusion between original metal and deposited metal. If arc is too short, or voltage too low
4) CORRECT TRAVEL SPEED.
When your speed is too fast your pool does not last long enough, impurities and gas are locked in. the bead is narrow and ripples pointed. When speed is too slow the metal piles up, the bead is high and wide, with a rather straight ripple.
5) CORRECT ELECTRODE ANGLE.
The electrode angle is of particular importance in fillet welding and deep groove welding. Generally speaking, when making a fillet weld, the electrode should be held so that it bisects the angle between the plates and is perpendicular to the line of weld.
Explanation: