Method of supplying an aqueous cutting fluid to machine tools
Abstract
Abstract An aqueous cutting or grinding fluid is fed to at least one machine tool having at least one cutting tool, and the used fluid is collected. Solids are removed from the used fluid to produce a supply of clarified fluid. A pH of 8 to 9.5 is maintained in the clarified fluid by addition of a base. Deionized water is supplied to the system to replace water losses, and a watermiscible lubricant is supplied to maintain a lubricant concentration in the system from 1 to 25 percent. Tramp oil is removed from the clarified fluid by passing a portion of the clarified fluid through a centrifuge, to maintain a tramp oil content of not more than 2 percent in the clarified fluid, and the resulting clarified fluid is reused.
Inventors
- 👤 C Sluhan
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |