Research Article
Optimization of GMAW Process Parameters Using Particle Swarm Optimization
Table 2
Welding parameters and their levels.
| Parameters | Unit | Notation | Factor levels | −2 | −1 |
0
|
1
|
2
|
| Welding current | A | I | 200 | 225 | 250 | 275 | 300 | Welding speed | mm/min | S | 150 | 158 | 166 | 174 | 182 | Contact tip to work distance | mm | N | 10 | 14 | 18 | 22 | 26 | Welding gun angle | Degree | T | 70 | 80 | 90 | 100 | 110 | Pinch | — | Ac | −10 | −5 | 0 | 5 | 10 |
|
|