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Factor level setting table.
| Level | Process parameters of ultrasonic roll extrusion | |||
|---|---|---|---|---|
| Speed (A) | Feed rate (B) | Amplitude (C) | Static pressure (D) | |
| n/(r/min) | f/(mm/min) | A/μm | F/N | |
| 1 | 150 | 15 | 5 | 200 |
| 2 | 270 | 26 | 11 | 280 |
| 3 | 390 | 37 | 17 | 420 |
| 4 | 510 | 48 | 23 | 510 |
| 5 | 630 | 59 | 29 | 600 |
