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OPERATION | ||
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BENEFITS OF PULSE ON PULSE FROM LINCOLN ELECTRIC
•Excellent appearance of the weld bead
•Improved cleaning action
•Reduced porosity
Table B.2 shows WFS and Trim settings for common aluminum types and wire sizes when welding with
The comments on Table B.3 show values of WFS below which it is not recommended to weld. The rea- son is, that below these values the weld transfer will change from a spray arc to a
TIG GTAW
The TIG mode features continuous control from 5 to 425 amps. The TIG mode can be run in either the Touch Start TIG or Scratch start mode.
The Arc Control level selects the starting mode.
Between
Between 0 and 10, the Scratch starting TIG mode is selected. In this range, the OCV of the machine is controlled between 50 and 70 volts
SMAW
In SMAW (STICK mode), arc control adjusts the arc force. It can be set to the lower range for a soft and less penetrating arc characteristic (negative numeric values) or to the higher range (positive numeric val- ues) for a crisp and more penetrating arc. Normally, when welding with cellulosic types of electrodes (E6010, E7010, E6011), a higher energy arc is required to maintain arc stability. This is usually indi- cated when the electrode sticks to the
ARC GOUGING
Gouging is basically removing metal to form a bevel or groove in a piece of steel with controlled forced air and a carbon rod.
The common procedures for Arc Gouging metal are:
•Removing poor welds from a weldment so that new welds can be made.
•Creating a welding groove or grooves in two pieces of steel butted together. (See Example below)
WELD GROOVES CREATED BY ARC GOUGING
STEEL BUTTED TOGTHER
Mode 9 in the Power Wave 405 is specifically for gouging. Gouging can also be done in the stick soft and crisp modes. Setting the output of the Stick Soft mode to 425 amps will enable the
WELDING PROCEDURES FOR PULSE-ON-PULSE (TABLE B.2)
MATERIAL | Aluminum 4043 | Aluminum 4043 | Aluminum 5356 | Aluminum 5356 | ||||
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| GAS |
| 100% Ar. | 100% Ar. | 100% Ar. | 100% Ar. | ||
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| WIRE |
| E4043 | E4043 | E5356 | E5356 | ||
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WIRE SIZE | 0.035 | 3/64 | 0.035 | 3/64 | ||||
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WELD MODE | 98 | 99 | 101 | 102 | ||||
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MATERIAL THICKNESS | TRIM/WFS |
| 14 ga. | 250 / 1.0 | 200 / 1.0 | 230 / 1.0 | 225 / 1.0 | |
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| 10 ga. | 400 /1.0 | 280 / 1.0 | 425 / 1.0 | 400 / 1.0 | |||
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| 3/16 | 550 / 1.0 | 340 / 1.0 | 670 / 1.0 | 500 / 1.0 | |
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| 1/4 | 600 / 1.0 | 400 / 1.0 | 700 / 1.0 | 550 / 0.9 | |
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COMMENTS | Not Recommended | Not Recommended | Not Recommended | Not Recommended | ||||
below 200 WFS | below 100 WFS | below 200 WFS | below 200 WFS | |||||
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