Research Article
Effect of the Cryogenically Treated Copper Nozzle Used in Plasma Arc Machining of S235 Steel
Table 4
Machining parameters and their levels.
| | Sl. no | Factors | Level 1 | Level 2 | Level 3 |
| | 1 | Cutting speed (mm/min) | 1000 | 1400 | 1800 | | 2 | Arc current (A) | 110 | 120 | 130 | | 3 | Gas pressure (bar) | 4 | 5 | 6 |
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