Research Article
Investigation of the Effects of Submerged Arc Welding Process Parameters on the Mechanical Properties of Pressure Vessel Steel ASTM A283 Grade A
Table 5
Analysis of variance for hardness.
| Source | DF | Seq SS | Adj SS | Adj MS | | |
| Current | 2 | 579.89 | 579.89 | 289.95 | 32.62 | 0.000 | Voltage | 1 | 26.64 | 26.64 | 26.64 | 3.00 | 0.096 | Travel speed | 1 | 831.27 | 831.27 | 831.27 | 93.52 | 0.000 | Current voltage | 2 | 550.19 | 550.19 | 275.09 | 30.95 | 0.000 | Current travel speed | 2 | 389.06 | 389.06 | 194.53 | 21.89 | 0.000 | Voltage travel speed | 1 | 587.50 | 587.50 | 587.50 | 66.10 | 0.000 | Current voltage travel speed | 2 | 213.66 | 213.66 | 106.83 | 12.02 | 0.000 | Error | 24 | 213.32 | 213.32 | 8.89 | | | Total | 35 | 3391.52 | | | | | | % | | % |
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