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Coolant ports are cut in the toolholder.
Cutting fluids can improve the performance of cutting tools by cooling the cutting tool and the workpiece, by lubricating the cutting surfaces of the tool, by inhibiting seizure between the chip and tool, and by flushing chips from the work area.
The need to lubricate the cutting tool is just as important as cooling it. Preventing steam buildup during the chip removal process is essential in maintaining the durability of the cutting edge. Steam that arises at the cutting interface releases at very high pressures and prevents the lubricant from reaching the cutting zone. Consequently, the lubricant boils away and disperses from the cutting surface. This lubricant loss increases the friction and causes premature wear of the cutting tool. Furthermore, sudden changes in temperature cause thermal cracks and craters on the cutting edge that directly affect tool life.
When using standard cutting tools with conventional coolant hoses or nozzles that are remote from the cutter, the coolant ricochets off and is thrown away from the high speed rotating cutter. In contrast, when using coolantinduced cutting tools, the coolant is in...