Flux-Cored Arc Welding Machinery's Handbook, 31st Edition
1588
220
220
Amps Volts
190
190
250
28 350 150
29
26
350 150
170
280
280 120
420 180
280 120
420 180
25
29
210 90
210 90
490 210
150
Vert
24
Flat
290
30
140 60
560 240
70 30
630 270
30
700 300
300
Feed Rate (in/min, mm/s)
31
Volts
310
Fig. 5. Wire Feed and Voltage Settings for FCAW Welding with 0.045-in. (1.2-mm) Diameter E71T-1 Electrodes, with Optimum Settings Circled.
Settings for all-position E71T-1 electrodes of 0.062-in. (1.6-mm) diameter, shown at the right in Fig. 6, for vertical up welding are just before the ten o’clock position, or 190 in/min, giving 230 to 240 amps with voltage adjusted to 24–25 volts. For flat welding, the wire feed is set to the twelve o’clock position, giving 340–350 amps with a voltage of 29–30 volts. High-Deposition, All-Position Electrodes.— Vertical up weld deposition rates of 10 to 14 lb/h can be achieved with the E71T-1, 0.062-in. (1.6-mm) and 0.045-in. (1.2-mm) flux- cored electrodes. Settings are shown in Fig. 6 for E71T-1, FCAW electrodes of 0.052- and 0.062-in. (1.4- and 1.6-mm) diameter. These electrodes are suited to applications in which the steel thickness is 1 ∕ 4 in. and thicker, and are the most cost-effective diameter for all- position welds on carbon and stainless steels of 1 ∕ 4 in. (6.35 mm) thickness and thicker. In contrast, vertical up welds, using GMAW or SMAW, may deposit an average of 2 to 4 lb/h (1 to 2 kg/h). Deposition rates are based on welding 60 minutes of each hour. Pulsed GMAW provides deposition rates of 3 to 6 lb/h (1.3–2.7 kg/h). Average rates for vertical up welding with all-position, flux-cored electrodes are shown in Table 8.
340
250
400
300
29 350
28
200
28
32
275
26
25
350 150
240
29
280 120
420 180
420
280
25
Flat
490
210 90
490 210
210
230
24
180
300
30 32
Flat Vert
25
Vert
140 60
560 240
560
140
350
630 270
22
70
in/min mm/s
in/min
150
Volts
Amps
Volts
Amps
0.052-in. Electrode
0.062-in. Electrode
Fig. 6. Wire Feed and Voltage Settings for Vertical Up Welding with 0.052- and 0.062-in. Diameter Electrodes
The average deposition rates in Table 9 are to be expected with FCAW electrodes avail able today. Special electrodes are also available that are specifically designed to provide higher deposition rates. A typical manual welder, welding on steel of 1 ∕ 4 to 3 ∕ 8 in. thickness for 30 minutes of each hour with an all-position flux-cored 0.062-in. (1.6-mm) or 0.045-in. (1.2-mm) diameter electrode would deposit about 4–5 lb/h.
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