Selecting the Right Formulation Not all cutting oils are created equal, and selecting the correct one depends on the base metal being drilled. This softening process, known as thermal annealing, causes the edge to roll and deform rather than cut, resulting in oversized holes and a frustrating cycle of constant sharpening.
Heat Management Strategies for Successful Metal Drilling
When working with softer metals like aluminum or copper, a lighter oil without sulfur or chlorine additives is preferred to prevent staining or corrosion. For ferrous materials like steel and stainless steel, a heavy-duty oil with extreme pressure (EP) additives is necessary to handle the high stress.
Reducing Friction and Extending Tool Life Beyond temperature control, the role of cutting oil in reducing friction cannot be overstated. Metal-on-metal contact creates immense resistance, which increases the required force and can lead to work hardening of the surface.
Managing Heat for Successful Metal Drilling
Cutting oil helps to flush these chips away from the cutting zone, preventing clogging and ensuring that the drill exits the material cleanly. This reduction in friction directly translates to less energy consumption, smoother cutting action, and a dramatically extended tool life.
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