Table 10
Results of the magnetic filtration tests: Iron concentration in the feed/outlet for the automotive coils and the packaging coils.
| Lubricant in the recirculation system | cFe (feed) [mg/l] | cFe (outlet) [mg/l] | MagneticFe-removal | Mean Fe-removal | |||
|---|---|---|---|---|---|---|---|
| automotive steel grade | |||||||
| hard | soft | hard | soft | hard | soft | // | |
| Ref. autom. emulsion | 32.3 | 41.1 | 30.6 | 37.0 | 5.1% | 9.9% | 7.7% |
| OFL 01 | 2.9 | 1.7 | 1.5 | 1.5 | 49.8% | 11.8% | 35.7% |
| OFL 02 | 8.5 | 4.5 | 4.6 | 3.5 | 46.0% | 21.6% | 37.5% |
| OFL 03 | 14.9 | 9.1 | 16.1 | 10.0 | not determinable | approx. 38.0%* | |
| *Estimated via deposited particle mass. | |||||||
| Lubricant sprayed with the MIDAS system | cFe (feed) [mg/l] | cFe (outlet) [mg/l] | Magnetic Fe-removal | ||||
| packaging steel | |||||||
| Palm-oil based lubricant | 1.6 | 0.8 | 49.4% | ||||
| OFL 03 | 1.6 | 1.2 | 25.6% | ||||
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