Lubrication and Cooling
Due to high cutting speeds a cutting fluid is required to lubricate and cool the tool and workpiece. The fluids can increase tool life, cutting speeds, and the quality of the finished surface. There are three common cutting fluids: mineral, synthetic, and water-soluble oils. These fluids can be applied by spraying, misting, or flooding the workpiece.
Fluids and Applications
| Workpeice | Cutting Fluid | Application method |
|---|---|---|
| Aluminum | None, mineral oil, fatty oil | Spray, flood |
| Brass | Mineral oil, specialty fluid | Spray, flood |
| Cast Iron | Soluble oil, chemical and synthetic oil, none | Spray, flood |
| Mild Steel | Chemical and synthetic oil, soluble oil | Spray, flood |
| Stainless Steel | Sulferized mineral oil, fally soluble oil, chemical and synthetic oil | Spray, flood |
| Plastics | Mineral oil, soluble oil, cold air, none | Spray, flood, air jet |
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