Direction: A weld is made using MIG welding process with the following welding parameters:
Current: 200 A: Voltage: 25 V; Welding speed: 18 cm/min; Wire diameter: 1.2 mm; Wire feed rate: 4 m/min. Thermal efficiency of the process: 65%
-
The area of cross-section of weld bead in mm² is
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- 16.3
- 25.1
- 30.3
- 38.6
Correct Option: B
Volume of weld
| = | d2 × V | |
| 4 |
| = | (1.2)2 × 4000 | |
| 4 |
= 4521.6 mm3/min
| Area of weld = | = | = 25.12mm2 | ||
| speed | 18 × 10 |
