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. Work hardening makes the material more difficult to cut, placing additional stress on the drill.
Common Mistakes When Drilling Metal Without Cutting Oil and How to Avoid Them
Improving Surface Finish and Chip Evacuation The quality of the hole surface is directly influenced by the lubrication and cooling performance of the cutting fluid. If this heat is not dissipated, the metal at the cutting edge reaches a critical temperature where the steel loses its temper.
The application of a cutting oil serves as a critical intervention, creating a protective barrier that separates the drill from the workpiece. This reduction in friction directly translates to less energy consumption, smoother cutting action, and a dramatically extended tool life.
The Cost of Skipping Cutting Oil: Avoiding Common Drilling Mistakes
Best Practices for Application. Cutting oil helps to flush these chips away from the cutting zone, preventing clogging and ensuring that the drill exits the material cleanly.
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