Research Article
Estimation of Optimum Dilution in the GMAW Process Using Integrated ANN-GA
Table 2
Welding parameters and their levels.
| Parameters | Unit | Notation | Factor levels | −2 | −1 | 0 | 1 | 2 |
| Welding current | A | | 200 | 225 | 250 | 275 | 300 | Welding speed | mm/min | | 150 | 158 | 166 | 174 | 182 | Contact tip to work distance | mm | | 10 | 14 | 18 | 22 | 26 | Welding gun angle | Degree | | 70 | 80 | 90 | 100 | 110 | Pinch | — | Ac | −10 | −5 | 0 | 5 | 10 |
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