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, the mass of work metal and its ability to maintain its original properties after welding, the characteristics of the assembly with reference to effect of stresses set up by heat application, the practicability of heat treatment before and/or after welding, the specific requirements as to welding quality and the cost of achieving the desired results.
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. If too low, there is not enough heat to melt the base metal and your molten pool will be too small, will pile up, and look 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, there is not enough heat to melt the base metal properly and the electrode quite often stick to the work, giving a high, uneven bead, having irregular ripples with poor fusion.
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. If undercut occurs in the vertical member, lower the angle of the arc and direct the arc toward the vertical member.
Answers & Comments
Answer:
5 essentials for proper welding procedures
1. Correct electrode size
2. Correct current
3. Correct arc length or voltage
4. Correct travel speed
5. Correct electrode angle
Explanation:
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, the mass of work metal and its ability to maintain its original properties after welding, the characteristics of the assembly with reference to effect of stresses set up by heat application, the practicability of heat treatment before and/or after welding, the specific requirements as to welding quality and the cost of achieving the desired results.
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. If too low, there is not enough heat to melt the base metal and your molten pool will be too small, will pile up, and look 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, there is not enough heat to melt the base metal properly and the electrode quite often stick to the work, giving a high, uneven bead, having irregular ripples with poor fusion.
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. If undercut occurs in the vertical member, lower the angle of the arc and direct the arc toward the vertical member.
5 essentials for proper welding procedures.
5 essentials for proper welding procedures.1) CORRECT ELECTRODE SIZE.
5 essentials for proper welding procedures.1) CORRECT ELECTRODE SIZE.2) CORRECT CURRENT.
5 essentials for proper welding procedures.1) CORRECT ELECTRODE SIZE.2) CORRECT CURRENT.3) CORRECT ARC LENGTH or VOLTAGE.
5 essentials for proper welding procedures.1) CORRECT ELECTRODE SIZE.2) CORRECT CURRENT.3) CORRECT ARC LENGTH or VOLTAGE.4) CORRECT TRAVEL SPEED.
Explanation:
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