Table 5
Torque evolution during the long-term trials at the three-rolls-wear test bench with the three OFL and the reference oil-based lubricant.
| Torque evolution of the long-term trials | Comment | |
|---|---|---|
| Oil-based emulsion for automotive steels |  |
Decrease of the torque between the beginning and end of the test |
| OFL 01 |  |
About 25% increase of the torque between beginning and end of the test |
| OFL 02 |  |
Slightly unstable torque but light decrease of the torque between beginning and end of the test |
| OFL 03 |  |
At the beginning of each day, the torque was very low and increased over time until it reached a plateau, possibly caused by polymer-like residues and iron particles on the rolls. |
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